Image

Dr. Liviu NEDELCU

Scientific Researcher II

Laboratory of Complex Heterostructures and Multifunctional Materials

nedelcu[AT]infim[DOT]ro

Education

Faculty of Physics, University of Bucharest

Positions

Senior researcher II

Research interests

Development of dielectric materials for microwave, millimeter wave, and terahertz applications.

Expertize

Dielectric polarization

Ferroelectric phase transitions

Solid-state reaction

Electroceramics

Microwave dielectrics

Thin films X-ray diffraction

Broadband Dielectric Spectroscopy

Dielectric resonators

Dielectric resonator antennas

Tunable capacitors

Patents

Process for obtaining of Mg4Nb2O9 ceramics with low absorption in terahertz domain – RO 131868 B1 

Resume

 Liviu NEDELCU, Scientific researcher rank II (since 2015), born in 1978, graduated the Faculty of Physics – Section “Materials Science and Technology” at University of Bucharest (UB) (2002), has a MSc degree in “Materials Physics” (UB) (2004), and a PhD degree in Physics (UB) (2011). Work experience: National Institute of Materials Physics (NIMP) (2002 – to date). Main areas of interest/expertise: dielectric polarization and ferroelectric phase transitions; solid-state synthesis methods; characterization techniques for materials in powder, bulk and thin film form (e.g. XRD, SEM, broad-band dielectric measurements, including terahertz time-domain spectroscopy); microwave dielectrics; dielectric resonators; tunable capacitors; dielectric resonator antennas. Publications (last updated November 2022): 52 articles published in Web of Science® (WoS) journals with impact factor (e.g., Mater. Sci. Eng. B; Appl. Surf. Sci.; J. Eur. Ceram. Soc.; Prog. Solid State Chem.; J. Appl. Phys., IEEE Trans. Antennas Propag.; IEEE Microw. Wirel. Compon. Lett.); Hirsch index (WoS): 15; Citations (without self-citations): 530. Scientific reviewer to topical WoS-indexed journals such as: J. Alloy. Compd.; Mater. Sci. Eng. B; Mater. Chem. Phys.; J. Mater. Sci.; J. Am. Ceram. Soc.; J. Eur. Ceram. Soc.; Materials; Sensors; or IEEE Access. Patents: 1 OSIM awarded patent (RO 131868 B1). Coordinated projects: 1 international project (https://infim.ro/en/project/maestro); 6 national projects, 4 of which as Principal Investigator (e.g. https://infim.ro/en/project/ditersat, https://infim.ro/en/project/prodies, https://infim.ro/en/project/master) and 2 as NIMP Project Responsible. Professional profile web-links: UEFISCDI ID (UEF-ID): U-1700-039C-8541; ORCID ID: 0000-0002-0612-590X; WoS ResearcherID: B-9882-2011.

Projects

1. Multifunctional dielectric materials produced by spark plasma sintering for passive microwave devices

Project Type: PED, Start Date: 2020-10-23 End Date: 2022-10-21

2. Intrinsic properties in microwave dielectric materials investigated by terahertz time-domain spectroscopy

Project Type: TE, Start Date: 2018-10-10 End Date: 2020-10-09

3. Compact and integrated agile antennas based on tunable ferroelectric materials

Project Type: ANR-ANCS, Start Date: 2014-02-01 End Date: 2016-12-31

4. Advanced dielectric materials for therahertz space applications and technology

Project Type: STAR ROSA, Start Date: 2013-11-01 End Date: 2015-11-01

5. Terahertz spectroscopy low loss microwave dielectrics

Project Type: PD, Start Date: 2011-10-01 End Date: 2013-09-01

Publications

1. Microwave and Terahertz Properties of Spark-Plasma-Sintered Zr0.8Sn0.2TiO4 Ceramics
Authors: Nedelcu, L; Burdusel, M; Grigoroscuta, MA; Geambasu, CD; Enculescu, M; Badica, P; Banciu, MG

Published: FEB 2022, MATERIALS, 15, 1258, DOI: 10.3390/ma15031258

2. Sr and Mg Doped Bi-Phasic Calcium Phosphate Macroporous Bone Graft Substitutes Fabricated by Robocasting: A Structural and Cytocompatibility Assessment
Authors: Besleaga, C; Nan, B; Popa, AC; Balescu, LM; Nedelcu, L; Neto, AS; Pasuk, I; Leonat, L; Popescu-Pelin, G; Ferreira, JMF; Stan, GE

Published: SEP 2022, JOURNAL OF FUNCTIONAL BIOMATERIALS, 13, 123, DOI: 10.3390/jfb13030123

3. Intrinsic Dielectric Loss in Zr0.8Sn0.2TiO4 Ceramics Investigated by Terahertz Time Domain Spectroscopy
Authors: Nedelcu, L; Geambasu, CD; Enculescu, M; Banciu, MG

Published: JAN 2021, MATERIALS, 14, DOI: 10.3390/ma14010216

4. Investigation of Ba0.6Sr0.4TiO3 thick films by means of a novel THz-TDS approach
Authors: Nedelcu, L; Annino, G; Chirila, C; Trupina, L; Galca, AC; Banciu, MG

Published: MAR 15 2020, APPLIED SURFACE SCIENCE, 506, DOI: 10.1016/j.apsusc.2019.144807

5. Texture and interface characterization of iridium thin films grown on MgO substrates with different orientations
Authors: Trupina, L; Nedelcu, L; Banciu, MG; Crunteanu, A; Huitema, L; Constantinescu, C; Boulle, A

Published: FEB 2020, JOURNAL OF MATERIALS SCIENCE, 55, 1764, DOI: 10.1007/s10853-019-04004-7

6. Performant Composite Materials Based on Oxide Semiconductors and Metallic Nanoparticles Generated from Cloves and Mandarin Peel Extracts
Authors: Zgura, I; Enculescu, M; Istrate, C; Negrea, R; Bacalum, M; Nedelcu, L; Barbinta-Patrascu, ME

Published: NOV 2020, NANOMATERIALS, 10, DOI: 10.3390/nano10112146

7. RETRACTION: Synthesis and properties of Ba(Zn1/3Ta2/3)O-3 for microwave and millimeter-wave applications (Retraction of Vol 516, Pg 1558, 2007)
Authors: Ioachim, A; Toacsan, MI; Banciu, MG; Nedelcu, L; Dutu, CA; Alexandru, HV; Antohe, S; Andronescu, E; Jinga, S; Nita, P

Published: MAR 31 2020, THIN SOLID FILMS, 698, DOI: 10.1016/j.tsf.2020.137898

8. Extrinsic absorption in spark plasma sintered Zr0.8Sn0.2TiO4 ceramics investigated by terahertz time-domain spectroscopy
Authors: Nedelcu, L; Burdusel, M; Grigoroscuta, MA; Geambasu, CD; Banciu, MG; Badica, P

Published: 2019, 2019 44TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ), DOI:

9. Frequency selective surfaces with hexagonal elements for millimeter waves applications
Authors: Banciu, MG; Geambasu, DC; Nedelcu, L; Trupina, L

Published: 2019, 2019 INTERNATIONAL SEMICONDUCTOR CONFERENCE (CAS 2019), 42ND EDITION, 64, DOI:

10. EXPERIMENTAL STUDY OF TERAHERTZ RESPONSE FROM SOME FERROELECTRIC AND DIELECTRIC MATERIALS
Authors: Banciu, MG; Nedelcu, L; Furuya, T; Hrib, L; Geambasu, DC; Trupina, L; Pantelica, D; Mihai, MD; Tani, M

Published: OCT-DEC 2019, PROCEEDINGS OF THE ROMANIAN ACADEMY SERIES A-MATHEMATICS PHYSICS TECHNICAL SCIENCES INFORMATION SCIENCE, 20, 360, DOI:

11. Growth of SrTiO3 Single Crystals with a Diameter of about 30 mm by the Verneuil Method
Authors: Tateno, Y; Endo, K; Arisawa, S; Vlaicu, AM; Nedelcu, L; Preda, N; Secu, M; Iordanescu, R; Kuncser, AC; Badica, P

Published: FEB 2019, CRYSTAL GROWTH & DESIGN, 19, 612, DOI: 10.1021/acs.cgd.8b01004

12. Intrinsic losses in dielectrics investigated by terahertz spectroscopy
Authors: Nedelcu, L; Geambasu, CD; Banciu, MG; Mogildea, G; Mogildea, M

Published: 2018, 2018 43RD INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ), DOI:

13. Wet chemical synthesis of ZnO-CdS composites and their photocatalytic activity
Authors: Zgura, I; Preda, N; Socol, G; Ghica, C; Ghica, D; Enculescu, M; Negut, I; Nedelcu, L; Frunza, L; Ganea, CP; Frunza, S

Published: MAR 2018, MATERIALS RESEARCH BULLETIN, 99, 181, DOI: 10.1016/j.materresbull.2017.11.013

14. Millimeter wave and Terahertz investigations on some dielectric materials
Authors: Banciu, MG; Furuya, T; Geambasu, DC; Nedelcu, L; Pantelica, D; Dracea, MD; Ionescu, P; Iuga, A; Chirila, C; Hrib, L; Trupina, L; Tani, M

Published: 2018, CAS 2018 PROCEEDINGS: 2018 INTERNATIONAL SEMICONDUCTOR CONFERENCE, 290, DOI:

15. GeSi nanocrystals in SiO2 matrix with extended photoresponse in near infrared
Authors: Stavarache, I; Nedelcu, L; Teodorescu, VS; Maraloiu, VA; Dascalescu, I; Ciurea, ML

Published: 2018, CAS 2018 PROCEEDINGS: 2018 INTERNATIONAL SEMICONDUCTOR CONFERENCE, 256, DOI:

16. Microwave antenna array using new dielectric resonator antenna elements
Authors: Banciu, MG; Militaru, N; Martian, A; Nicolaescu, I; Tuta, L; Geambasu, DC; Nedelcu, L; Trupina, L; Ramer, R

Published: 2017, 2017 INTERNATIONAL SEMICONDUCTOR CONFERENCE (CAS), 40TH EDITION, 132, DOI:

17. Ultra-High Tunability of Ba(2/3)Sr(1/3) TiO3-Based Capacitors Under Low Electric Fields
Authors: Ghalem, A; Rammal, M; Huitema, L; Crunteanu, A; Madrangeas, V; Dutheil, P; Dumas-Bouchiat, F; Marchet, P; Champeaux, C; Trupina, L; Nedelcu, L; Banciu, MG

Published: JUL 2016, IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, 26, 506, DOI: 10.1109/LMWC.2016.2576455

18. Microwave dielectric properties of BNT-BT0.08 thin films prepared by sol-gel technique
Authors: Huitema, L; Cernea, M; Crunteanu, A; Trupina, L; Nedelcu, L; Banciu, MG; Ghalem, A; Rammal, M; Madrangeas, V; Passerieux, D; Dutheil, P; Dumas-Bouchiat, F; Marchet, P; Champeaux, C

Published: APR 14 2016, JOURNAL OF APPLIED PHYSICS, 119, DOI: 10.1063/1.4945822

19. BST thin film capacitors integrated within a frequency tunable antenna
Authors: Rammal, M; Huitema, L; Crunteanu, A; Passerieux, D; Cros, D; Monediere, T; Madrangeas, V; Dutheil, P; Champeaux, C; Dumas-Bouchiat, F; Marchet, P; Nedelcu, L; Trupina, L; Banciu, G; Cernea, M

Published: 2016, 2016 IEEE INTERNATIONAL WORKSHOP ON ANTENNA TECHNOLOGY (IWAT), 47, DOI:

20. Growth of highly textured iridium thin films and their stability at high temperature in oxygen atmosphere
Authors: Trupina, L; Nedelcu, L; Negrila, C; Banciu, MG; Huitema, L; Crunteanu, A; Rammal, M; Ghalem, A

Published: SEP 2016, JOURNAL OF MATERIALS SCIENCE, 51, 8717, DOI: 10.1007/s10853-016-0131-1

21. Electrical transport properties and modelling of electrostrictive resonance phenomena in Ba2/3Sr1/3TiO3 thin films
Authors: Ghalem, A; Huitema, L; Crunteanu, A; Rammal, M; Trupina, L; Nedelcu, L; Banciu, MG; Dutheil, P; Constantinescu, C; Marchet, P; Dumas-Bouchiat, F; Champeaux, C

Published: NOV 14 2016, JOURNAL OF APPLIED PHYSICS, 120, DOI: 10.1063/1.4966942

22. Submillimeter-wave properties of Zn2SiO4 ceramics
Authors: Nedelcu, L; Geambasu, CD; Banciu, MG; Iwamae, A; Furuya, T; Tani, M

Published: 2015, 2015 40TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER AND TERAHERTZ WAVES (IRMMW-THZ), DOI: 10.1109/IRMMW-THz.2015.7327946

23. New antennas with dielectric resonators of axial symmetry
Authors: Geambasu, DC; Banciu, MG; Nedelcu, L; Ramer, R

Published: 2015, 2015 INTERNATIONAL SEMICONDUCTOR CONFERENCE (CAS), 142, DOI:

24. Electro-Optic Sampling of Terahertz Pulses Using BaTiO3 in Non-Collinear Cherenkov Phase-Matching Scheme
Authors: Ozawa, S; Hori, T; Azuma, S; Funkner, S; Niehues, G; Yamamoto, K; Furuya, T; Kitahara, H; Banciu, G; Nedelcu, L; Estacio, E; Bakunov, MI; Tani, M

Published: 2015, 2015 40TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER AND TERAHERTZ WAVES (IRMMW-THZ), DOI:

25. Compact antenna using ZST low-loss high dielectric constant material
Authors: Geambasu, DC; Leontin, T; Banciu, MG; Nedelcu, L; Nicolaescu, I

Published: 2014, 2014 22ND TELECOMMUNICATIONS FORUM TELFOR (TELFOR), 809, DOI:

26. Higher-Order Modes in High-Permittivity Cylindrical Dielectric Resonator Antenna Excited by an Off-Centered Rectangular Slot
Authors: Avadanei, OG; Banciu, MG; Nedelcu, L

Published: 2014, IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, 13, 1588, DOI: 10.1109/LAWP.2014.2344860

27. High-Order Modes in High Permittivity Cylindrical Dielectric Resonator Antenna Excited by a Wide Microstrip Line
Authors: Avadanei, OG; Banciu, MG; Nedelcu, L

Published: 2014, 2014 10TH INTERNATIONAL CONFERENCE ON COMMUNICATIONS (COMM), DOI:

28. Synthesis and properties of Ba(Zn1/3Ta2/3) O-3 for microwave and millimeter-wave applications (vol 516, pg 1558 , 2008)
Authors: Ioachim, A; Toacsan, MI; Banciu, MG; Nedelcu, L; Dutu, CA; Alexandru, HV; Antohe, S; Andronescu, E; Jinga, S; Nita, P

Published: DEC 2 2013, THIN SOLID FILMS, 548, 663, DOI: 10.1016/j.tsf.2013.10.132

29. Structural and dielectric properties of Ba(X1/3Ta2/3)O-3 thin films grown by RF-PLD
Authors: Nedelcu, L; Scarisoreanu, ND; Chirila, C; Busuioc, C; Banciu, MG; Jinga, SI; Dinescu, M

Published: AUG 1 2013, APPLIED SURFACE SCIENCE, 278, 161, DOI: 10.1016/j.apsusc.2012.10.124

30. Dielectric properties of Ba(Zn1/3Ta2/3)O-3 thin films on Pt-coated Si substrates
Authors: Nedelcu, L; Mandache, NB; Toacsan, MI; Vlaicu, AM; Banciu, MG; Ioachim, A; Gherendi, F; Luculescu, CR; Nistor, M

Published: NOV 1 2012, THIN SOLID FILMS, 522, 116, DOI: 10.1016/j.tsf.2012.09.002

31. Ba(Zn1/3Ta2/3)O-3 perovskite ceramics doped with Nb5+, Ce4+ or Yb3+
Authors: Busuioc, C; Jinga, SI; Stoleriu, S; Nedelcu, L; Andronescu, E

Published: MAR-APR 2012, JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS, 14, 244, DOI:

32. Superior Modes in High Permittivity Cylindrical Dielectric Resonator Antenna Excited by a Central Rectangular Slot
Authors: Avadanei, OG; Banciu, MG; Nicolaescu, I; Nedelcu, L

Published: NOV 2012, IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 60, 5038, DOI: 10.1109/TAP.2012.2207692

33. Ba(X1/3Ta2/3)O-3 COMPLEX PEROVSKITES FOR MICROWAVE AND MILLIMETER-WAVE APPLICATIONS
Authors: Nedelcu, L; Busuioc, C; Banciu, MG; Ramer, R

Published: 2012, 2012 INTERNATIONAL SEMICONDUCTOR CONFERENCE (CAS), VOLS 1 AND 2, 2, 306, DOI:

34. Cylindrical resonator antenna manufactured with Barium Neodymium Titanate
Authors: Nicolaescu, I; Avadanei, OG; Nedelcu, L; Toacsan, MI; Banciu, MG; Andrei, I; Balmus, SB

Published: NOV-DEC 2012, JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS, 14, 1010, DOI:

35. Microwave antennas based on Ba1-xPbxNd2Ti5O14
Authors: Ene-Dobre, M; Banciu, MG; Nedelcu, L; Stoica, G; Busuioc, C; Alexandru, HV

Published: SEP-OCT 2011, JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS, 13, 1304, DOI:

36. BNT ADVANCED CERAMICS FOR SLOT COUPLED DIELECTRIC RESONATOR ANTENNAS
Authors: Nicolaescu, I; Banciu, MG; Nedelcu, L; Avadanei, O; Radu, I

Published: 2011, 2011 INTERNATIONAL SEMICONDUCTOR CONFERENCE (CAS 2011), 34TH EDITION, VOLS 1 AND 2, 196, DOI:

37. Synthesis and dielectric characterization of Ba0.6Sr0.4TiO3 ferroelectric ceramics
Authors: Nedelcu, L; Ioachim, A; Toacsan, M; Banciu, MG; Pasuk, I; Berbecaru, C; Alexandru, HV

Published: JUN 30 2011, THIN SOLID FILMS, 519, 5815, DOI: 10.1016/j.tsf.2010.12.191

38. Microwave properties of Ba(Zn1/3Ta2/3)O-3 dielectric resonators
Authors: Nedelcu, L; Toacsan, MI; Banciu, MG; Ioachim, A

Published: JAN 12 2011, JOURNAL OF ALLOYS AND COMPOUNDS, 509, 481, DOI: 10.1016/j.jallcom.2010.09.069

39. Synthesis and characterization of doped Ba(Mg1/3Ta2/3)O-3 ceramics
Authors: Jinga, C; Andronescu, E; Jinga, S; Ioachim, A; Nedelcu, L; Toacsan, MI

Published: FEB 2010, JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS, 12, 287, DOI:

40. Barium magnesium tantalate thin films deposited by RF-magnetron sputtering from a stoichiometric target
Authors: Braic, V; Kiss, A; Ioachim, A; Toacsan, M; Nedelcu, L; Braic, M

Published: DEC 2010, JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS, 12, 2385, DOI:

41. Optical and structural studies on Ba(Mg1/3Ta2/3)O-3 thin films obtained by radiofrequency assisted pulsed plasma deposition
Authors: Scarisoreanu, ND; Galca, AC; Nedelcu, L; Ioachim, A; Toacsan, MI; Morintale, E; Stoica, SD; Dinescu, M

Published: SEP 1 2010, APPLIED SURFACE SCIENCE, 256, 6530, DOI: 10.1016/j.apsusc.2010.04.041

42. Dielectric resonator antennas of ZST advanced cerramics
Authors: Ene-Dobre, M; Banciu, MG; Nedelcu, L; Ioachim, A; Alexandru, HV

Published: SEP 2010, JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS, 12, 1929, DOI:

43. Ba(Zn1/3Ta2/3)O-3 Ceramics for Microwave and Millimeter-wave Applications
Authors: Alexandru, HV; Ioachim, A; Toacsan, MI; Nedelcu, L; Banciu, MG; Berbecaru, C; Voicu, G; Jinga, S; Andronescu, E

Published: 2009, INTERDISCIPLINARY TRANSPORT PHENOMENA: FLUID, THERMAL, BIOLOGICAL, MATERIALS, AND SPACE SCIENCES, 1161, 553, DOI: 10.1111/j.1749-6632.2008.04077.x

44. Dielectric Properties of Paraelectric Ba1-xSrxTiO3 Ceramics
Authors: Nedelcu, L; Toacsan, MI; Banciu, MG; Ioachim, A

Published: 2009, FERROELECTRICS, 391, 41, DOI: 10.1080/00150190903001086

45. The effects of thermal treatments on microwave dielectric properties of Ba(Zn1/3Ta2/3.)O-3 ceramics
Authors: Ioachim, A; Nedelcu, L; Andronescu, E; Jinga, S; Toacsan, MI; Banciu, MG; Lorinczi, A; Popescu, M

Published: JAN 2008, JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS, 10, 212, DOI:

46. PLD and RF-PLD synthesis of Ba0.6Sr0.4TiO3 ferroelectric thin films for electrically controlled devices
Authors: Nedelcu, L; Ioachim, A; Toacsan, MI; Banciu, MG; Pasuk, I; Buda, M; Scarisoreanu, N; Ion, V; Dinescu, M

Published: NOV 2008, APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 93, 679, DOI: 10.1007/s00339-008-4694-9

47. High-Q BZT ceramics for microwave applications
Authors: Ioachim, A; Toacsan, MI; Nedelcu, L; Mihut, L

Published: 2008, PROCEEDINGS OF THE 6TH WSEAS INTERNATIONAL CONFERENCE ON APPLIED ELECTROMAGNETICS, WIRELESS AND OPTI, DOI:

48. Ceramic materials Ba(1-x)SrxTiO3 for electronics - Synthesis and characterization
Authors: Berbecaru, C; Alexandru, HV; Porosnicu, C; Velea, A; Ioachim, A; Nedelcu, L; Tonsan, M

Published: SEP 30 2008, THIN SOLID FILMS, 516, 8214, DOI: 10.1016/j.tsf.2008.04.031

49. Correlation of Structural and MW-MMW Dielectric Properties with Vibrational Modes in BaX1/3Ta2/3O3 Complex Perovskites
Authors: Toacsan, MI; Ioachim, A; Nedelcu, L; Banciu, MG; Mihut, L; Szilagyi, A

Published: 2008, 2008 33RD INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER AND TERAHERTZ WAVES, VOLS 1 AND 2, +, DOI:

50. InN thin films deposited on flexible substrates by reactive RF-magnetron sputtering
Authors: Zoita, NC; Besleaga, C; Braic, L; Mitran, T; Grigorescu, C; Nedelcu, L

Published: NOV 2008, OPTOELECTRONICS AND ADVANCED MATERIALS-RAPID COMMUNICATIONS, 2, 720, DOI:

51. Synthesis and properties of Ba(Zn1/3Ta2/3)O-3 for microwave and millimeter wave applications
Authors: Ioachim, A; Toacsan, MI; Banciu, MG; Nedelcu, L; Dutu, CA; Alexandru, HV; Antohe, S; Andronescu, E; Jinga, S; Nita, P

Published: FEB 15 2008, THIN SOLID FILMS, 516, 1562, DOI: 10.1016/j.tsf.2007.03.151

52. Radiation characteristics of a novel compact microstrip patch resonator
Authors: Militaru, N; Banciu, MG; Nedelcu, L; Lojewski, G

Published: 2008, ECCSC 08: 4TH EUROPEAN CONFERENCE ON CIRCUITS AND SYSTEMS FOR COMMUNICATIONS, +, DOI: 10.1109/ECCSC.2008.4611680

53. Transitions of barium strontium titanate ferroelectric ceramics for different strontium content
Authors: Ioachim, A; Toacsan, MI; Banciu, MG; Nedelcu, L; Dutu, A; Antohe, S; Berbecaru, C; Georgescu, L; Stoica, G; Alexandru, HV

Published: JUN 4 2007, THIN SOLID FILMS, 515, 6293, DOI: 10.1016/j.tsf.2006.11.097

54. Barium strontium titanate-based perovskite materials for microwave applications
Authors: Ioachim, A; Toacsan, MI; Banciu, MG; Nedelcu, L; Vasiliu, F; Alexandru, HV; Berbecaru, C; Stoica, G

Published: 2007, PROGRESS IN SOLID STATE CHEMISTRY, 35, 520, DOI: 10.1016/j.progsolidstchem.2007.01.017

55. Magnesium doped (Zr-0.8, Sn-0.2)TiO4 ceramics for microwave devices
Authors: Nedelcu, L; Ioachim, A; Toacsan, MI; Banciu, MG; Dutu, CA; Lifei, F; Vasiliu, F; Stoica, G

Published: JUN 2007, JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS, 9, 1729, DOI:

56. Effect of the sintering temperature on the Ba(Zn1/3Ta2/3)O-3 dielectric properties
Authors: Ioachim, A; Toacsan, MI; Banciu, MG; Nedelcu, L; Dutu, CA; Feder, M; Plapcianu, C; Lifei, F; Nita, P

Published: 2007, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 27, 1122, DOI: 10.1016/j.jeurceramsoc.2006.05.023

57. Thermal treatments effects on microwave dielectric properties of Ba(Zn1/3Ta2/3)O-3 ceramics
Authors: Ioachim, A; Toacsan, MI; Nedelcu, L; Banciu, MG; Dutu, CA; Andronescu, E; Jinga, S

Published: 2007, ROMANIAN JOURNAL OF INFORMATION SCIENCE AND TECHNOLOGY, 10, 268, DOI:

58. Annealing effects on properties of Ba(Zn1/3Ta2/3)O-3 dielectric materials
Authors: Ioachim, A; Toacsan, MI; Banciu, MG; Nedelcu, L; Dutu, CA; Andronescu, E; Jinga, S

Published: 2007, 2006 INTERNATIONAL SEMICONDUCTOR CONFERENCE, VOLS 1 AND 2, +, DOI:

59. Ferroelectric ceramics based on the BaO-SrO-TiO2 ternary system for microwave applications
Authors: Ioachim, A; Ramer, R; Toacsan, MI; Banciu, MG; Nedelcu, L; Dutu, CA; Vasiliu, F; Alexandru, HV; Berbecaru, C; Stoica, G; Nita, P

Published: 2007, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 27, 1180, DOI: 10.1016/j.jeurceramsoc.2006.05.086

60. Characterization of Ba0.5Sr0.5TiO3 thin films for tuneable devices
Authors: Ioachim, A; Toacsan, MI; Banciu, MG; Nedelcu, L; Dutu, CA; Sava, F; Popescu, M; Scarisoreanu, N; Dinescu, M

Published: 2007, 2006 INTERNATIONAL SEMICONDUCTOR CONFERENCE, VOLS 1 AND 2, +, DOI:

61. Accelerate ageing of PZT-type ceramics
Authors: Toacsan, MI; Ioachim, A; Nedelcu, L; Alexandru, HV

Published: 2007, PROGRESS IN SOLID STATE CHEMISTRY, 35, 537, DOI: 10.1016/j.progsolidstchem.2007.01.018

62. Microwave properties of Ba1-xPbxNd2Ti5O14 dielectric resonators
Authors: Ioachim, A; Toacsan, MI; Banciu, MG; Nedelcu, L; Dutu, CA; Stoica, G

Published: MAY 2007, JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS, 9, 1575, DOI:

63. BST thin films obtained by PLD for applications in electronics
Authors: Scarisoreanu, N; Filipescu, M; Ioachim, A; Toacsan, MI; Banciu, MG; Nedelcu, L; Dutu, A; Buda, M; Alexandru, HV; Dinescu, M

Published: JUL 31 2007, APPLIED SURFACE SCIENCE, 253, 8257, DOI: 10.1016/j.apsusc.2007.02.111

64. Dielectric properties of BZT ceramics for microwave applications
Authors: Ioachim, A; Toacsan, MI; Nedelcu, L; Banciu, MG; Dutu, CA; Andronescu, E; Jinga, S; Nita, P; Alexandru, HV

Published: JUN 2007, JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS, 9, 1838, DOI:

65. Dielectric and morphological studies of BST ferroelectric ceramics
Authors: Ioachim, A; Vasiliu, F; Toacsan, MI; Nedelcu, L; Banciu, MG; Alexandru, HV; Stoica, G

Published: MAY 2007, JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS, 9, 1581, DOI:

66. Dielectric properties of (Ba,Sr)TiO3 thin films for applications in electronics
Authors: Ioachim, A; Toacsan, MI; Nedelcu, L; Banciu, MG; Dutu, CA; Buda, M; Sava, F; Popescu, M; Scarisoreanu, N; Dinescu, M

Published: 2007, ROMANIAN JOURNAL OF INFORMATION SCIENCE AND TECHNOLOGY, 10, 354, DOI:

67. Dielectric resonators for microwave and millimeter wave applications
Authors: Nedelcu, L; Toacsan, MI; Banciu, MG; Ioachim, A

Published: 2007, CAS 2007 INTERNATIONAL SEMICONDUCTOR CONFERENCE, VOLS 1 AND 2, PROCEEDINGS, 278, DOI: 10.1109/SMICND.2007.4519700

68. Band-pass filters with (Zr-0.8, Sn-0.2)TiO4 dielectric resonators
Authors: Ioachim, A; Banciu, MG; Nedelcu, L; Dutu, CA

Published: JUN 2006, JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS, 8, 943, DOI:

69. High-k Mg-doped ZST for microwave applications
Authors: Ioachim, A; Banciu, MG; Toacsen, MI; Nedelcu, L; Ghetu, D; Alexandru, HV; Berbecaru, C; Dutu, A; Stoica, G

Published: OCT 31 2006, APPLIED SURFACE SCIENCE, 253, 338, DOI: 10.1016/j.apsusc.2006.06.006

70. BST solid solutions, temperature evolution of the ferroelectric transitions
Authors: Alexandru, HV; Berbecaru, C; Ioachim, A; Nedelcu, L; Dutu, A

Published: OCT 31 2006, APPLIED SURFACE SCIENCE, 253, 357, DOI: 10.1016/j.apsusc.2006.06.011

71. Dopant influence on BST ferroelectric solid solutions family
Authors: Ioachim, A; Alexandru, HV; Berbecaru, C; Antohe, S; Stanculescu, F; Banciu, MG; Toacsen, MI; Nedelcu, L; Ghetu, D; Dutu, A; Stoica, G

Published: JUL 2006, MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS, 26, 1161, DOI: 10.1016/j.msec.2005.09.045

72. Nickel-doped (Zr-0.8, Sn-0.2)TiO4 for microwave and millimeter-wave applications
Authors: Ioachim, A; Banciu, MG; Toacsan, MI; Nedelcu, L; Ghetu, D; Alexandru, HV; Stoica, G; Annino, G; Cassettari, M; Martinelli, M

Published: APR 25 2005, MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 118, 209, DOI: 10.1016/j.mseb.2004.12.071

73. Ferroelectric solid solutions (Ba,Sr)TiO3 for microwave applications
Authors: Alexandru, HV; Berbecaru, C; Stanculescu, F; Ioachim, A; Banciu, MG; Toacsen, MI; Nedelcu, L; Ghetu, D; Stoica, G

Published: APR 25 2005, MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 118, 96, DOI: 10.1016/j.mseb.2004.12.070

74. (Zr, Sn)TiO4 thin films for application in electronics
Authors: Nistor, M; Gherendi, F; Magureanu, M; Mandache, NB; Ioachim, A; Banciu, MG; Nedelcu, L; Popescu, M; Sava, F; Alexandru, HV

Published: JUL 15 2005, APPLIED SURFACE SCIENCE, 247, 174, DOI: 10.1016/j.apsusc.2005.01.124

75. Ba1-xSrxTiO3 ceramics for tunable microwave devices
Authors: Ioachim, A; Toacsan, MI; Banciu, MG; Nedelcu, L; Ghetu, D; Dutu, AC; Vasiliu, F; Alexandru, HV; Berbecaru, C; Stoica, G; Nita, P

Published: 2005, CAS 2005: INTERNATIONAL SEMICONDUCTOR CONFERENCE, 1-2, 280, DOI:

76. Microwave dielectric properties of doped Ba0.5Sr0.5TiO3 ceramics correlated with sintering temperature
Authors: Ioachim, A; Banciu, MG; Nedelcu, L

Published: DEC 2005, JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS, 7, 3027, DOI:

77. High-K ZST material for microwave and millimeter wave applications
Authors: Ioachim, A; Ramer, R; Toacsan, MI; Banciu, MG; Nedelcu, L; Ghetu, D; Stoica, G; Annino, G; Cassetari, M; Martinelli, M

Published: 2005, Smart Materials III, 5648, 376, DOI: 10.1117/12.582428

78. BNT ceramics synthesis and characterization
Authors: Ioachim, A; Toacsan, MI; Banciu, MG; Nedelcu, L; Alexandru, H; Berbecaru, C; Ghetu, D; Stoica, G

Published: JUN 15 2004, MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 109, 187, DOI: 10.1016/j.mseb.2003.10.116

79. New planar compact dual mode filters for mobile communications
Authors: Banciu, MG; Lojewski, G; Ioachim, A; Nedelcu, L; Militaru, N; Shen, A; Ramer, R

Published: 2004, 2004 International Semiconductor Conference, Vols 1and 2, Proceedings, 140, DOI:

80. Dielectric ceramics based on the ZrO2-SnO2-TiO2 ternary system for microwave and milimeter wave applications
Authors: Ioachim, A; Toacsan, MI; Banciu, MG; Nedelcu, L; Ghetu, D; Stoica, G; Annino, G; Cassetari, M; Martinelli, M

Published: 2004, 2004 International Semiconductor Conference, Vols 1and 2, Proceedings, 426, DOI:

81. Oxides ferroelectric (Ba, Sr)TiO3 for microwave devices
Authors: Alexandru, HV; Berbecaru, C; Ioachim, A; Toacsen, MI; Banciu, MG; Nedelcu, L; Ghetu, D

Published: JUN 15 2004, MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 109, 159, DOI: 10.1016/j.mseb.2003.10.034

82. BNT ceramics in paraelectric phase: Dielectric properties
Authors: Ioachim, A; Toacsan, MI; Banciu, MG; Nedelcu, L; Plapcianu, C; Alexandru, H; Berbecaru, C; Stoica, G

Published: 2003, 2003 INTERNATIONAL SEMICONDUCTOR CONFERENCE, VOLS 1 AND 2, PROCEEDINGS, 318, DOI: 10.1109/SMICND.2003.1252443

83. ZST type material for dielectric resonators and substrates for hybrid integrated circuits
Authors: Ioachim, A; Toacsan, MI; Banciu, MG; Nedelcu, L; Stoica, G; Annino, G; Cassettari, M; Martinelli, M; Ramer, R

Published: 2003, JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS, 5, 1398, DOI:

84. Frequency agile BST materials for microwave applications
Authors: Ioachim, A; Toacsan, MI; Banciu, MG; Nedelcu, L; Plapcianu, C; Alexandru, H; Berbecaru, C; Ghetu, D; Stoica, G; Ramer, R

Published: 2003, JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS, 5, 1393, DOI:

Load More

Back to top

Copyright © 2023 National Institute of Materials Physics. All Rights Reserved