Image

Dr. Mariana STEFAN

Scientific Researcher II

Laboratory of Atomic Structures and Defects in Advanced Materials (LASDAM)

mstefan[AT]infim[DOT]ro

Education

2002: PhD in Physics (Condensed State Physics), University of Bucharest, Romania

            Thesis title: Paramagnetic point defects in ionic crystals with structural phase transitions

            PhD supervisor: Prof. Dr. Sergiu V. Nistor

1991: BSc Physics (Electronic and Electrotechnical Materials and Components), Faculty of Physics, University of Bucharest, Romania

 

Positions

  • Employer: National Institute of Materials Physics

           Scientific Researcher II

 

  • CERIC (Central European Research Facility Consortium http://www.ceric-eric.eu/)

           Responsible for the EPR facility from the Romanian partner NIMP

 

Awards

2001: “Dragomir Hurmuzescu” award of the Romanian Academy 

Research interests

  • Characterization of point defects in wide band gap semiconductor and insulating crystalline materials
  • EPR probing of structural and chemical transformations in insulating and semiconductor materials
  • EPR investigations of nanostructured materials with applications in electronics, (photo)catalysis and gas sensing

Expertize

  • Multifrequency EPR and computational analysis of the EPR spectra
  • Single crystal growth by Czochralski and Bridgman techniques

Books

  • S. V. Nistor, M. Stefan, L. C. Nistor, D. Ghica and C. D. Mateescu, "Defect assisted localization of Mn2+ activating ions in the core of the ZnS quantum dots". Micro and Nanoengineering vol. 19: Nanomaterials and Nanostructures for Various Applications; eds: Gh. Brezeanu, H. Iovu, C. Cobianu,D. Dascălu, Bucureşti : Ed. Academiei Române, 2012
  • S. V. Nistor, M. Stefan, L. C. Nistor, D. Ghica, C. D. Mateescu and N. J. Barascu, "Preparation and properties of mesoporous cubic ZnS doped with Mn2+ activating ions".  Modern trends in nanoscience; eds.: Maria Bălăşoiu, G. M. Arzumanian, Bucureşti: Editura Academiei Române, 2013
  • M. Stefan, S. V. Nistor, D. Ghica, "ZnS and ZnO semiconductor nanoparticles doped with Mn2+ ions. Size effects investigated by EPR spectroscopy". SIZE EFFECTS IN NANOSTRUCTURES. Basics and Applications, Springer Series in Materials Science, Vol. 205, eds.: Victor Kuncser and Lucica Miu, Part I; Chapter 1, pp. 3-27; Springer-Verlag Berlin Heidelberg 2014
  • R. Plugaru, I. Mihalache, R. Gavrila, A. I. Danciu, G. Boldeiu, O.T. Nedelcu, N. Plugaru, V. A. Maraloiu, D. Ghica, M. Stefan, S. V. Nistor, "Zinc oxide thin films for radiation hardened devices by materials engineering". Micro and Nanoengineering vol. 24: Nanomaterials, Nanoparticles, Nanodevices; eds: M. Zaharescu, H. Chiriac, D. Dascălu, Bucureşti : Ed. Academiei Române, 2016

 

 

Resume

  • Researcher ID: G-4068-2011
  • ORCID ID: 0000-0001-5272-4770

 

Publications

1. In-depth insight into the structural properties of nanoparticulate NiO for CO sensing
Authors: Mihalcea, CG; Stefan, M; Ghica, C; Florea, OG; Stanoiu, A; Simion, CE; Somacescu, S; Ghica, D

Published: APR 1 2024, APPLIED SURFACE SCIENCE, 651, 159252, DOI: 10.1016/j.apsusc.2023.159252

2. Atomic scale insight into the decomposition of nanocrystalline zinc hydroxynitrate toward ZnO using Mn2+ paramagnetic probes
Authors: Vlaicu, ID; Stefan, M; Radu, C; Culita, DC; Radu, D; Ghica, D

Published: APR 6 2023, FRONTIERS IN CHEMISTRY, 11, 1154219, DOI: 10.3389/fchem.2023.1154219

3. Revolutionizing n-type Co3O4 Nanowire for Hydrogen Gas Sensing
Authors: Kumarage, GWC; Zappa, D; Mihalcea, CG; Maraloiu, VA; Stefan, M; Comini, E

Published: 2023 JUL 27 2023, ADVANCED ENERGY AND SUSTAINABILITY RESEARCH, DOI: 10.1002/aesr.202300067

4. Characterization of defect structures in nanoscaled W-doped TiO2 tested as supercapacitor electrode materials
Authors: Ammar, AU; Stefan, M; Macavei, SG; Tripon, S; Pana, O; Leostean, C; Vlaicu, ID; Rostas, AM; Erdem, E

Published: JAN 2023, JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 34, 8, DOI: 10.1007/s10854-022-09540-8

5. Atomic scale insight into the decomposition of nanocrystalline zinc hydroxynitrate toward ZnO using Mn2+ paramagnetic probes
Authors: Vlaicu, ID; Stefan, M; Radu, C; Culita, DC; Radu, D; Ghica, D

Published: APR 6 2023, FRONTIERS IN CHEMISTRY, 11, 1154219, DOI: 10.3389/fchem.2023.1154219

6. Visible-Light-Active Black TiO2 Nanoparticles with Efficient Photocatalytic Performance for Degradation of Pharmaceuticals
Authors: Andronic, L; Ghica, D; Stefan, M; Mihalcea, CG; Vlaicu, AM; Karazhanov, S

Published: AUG 2022, NANOMATERIALS, 12, 2563, DOI: 10.3390/nano12152563

7. Hard/soft effects of multivalence co-dopants in correlation with their location in PZT ceramics
Authors: Amarande, L; Cioangher, MC; Toma, V; Miclea, CF; Stefan, M; Pasuk, I; Iuga, AR; Negrila, C; Matei, E; Palici, AM; Joita, AC

Published: DEC 1 2021, CERAMICS INTERNATIONAL, 47, 33389, DOI: 10.1016/j.ceramint.2021.08.243

8. Influence of surfactant-tailored Mn-doped ZnO nanoparticles on ROS production and DNA damage induced in murine fibroblast cells
Authors: Popescu, T; Matei, CO; Vlaicu, ID; Tivig, I; Kuncser, AC; Stefan, M; Ghica, D; Miclea, LC; Savopol, T; Culita, DC; Moisescu, MG

Published: OCT 22 2020, SCIENTIFIC REPORTS, 10, DOI: 10.1038/s41598-020-74816-0

9. Multidisciplinary characterization of melanin pigments from the black fungus Cryomyces antarcticus
Authors: Pacelli, C; Cassaro, A; Maturilli, A; Timperio, AM; Gevi, F; Cavalazzi, B; Stefan, M; Ghica, D; Onofri, S

Published: JUL 2020, APPLIED MICROBIOLOGY AND BIOTECHNOLOGY, 104, 6395, DOI: 10.1007/s00253-020-10666-0

10. Electron Small Polaron and Magnetic Interactions Direct Anisotropic Growth of Silicon-Doped Hematite Nanocrystals
Authors: Allieta, M; Beranova, K; Marelli, M; Coduri, M; Stefan, M; Ghica, D; Morello, G; Malara, F; Naldoni, A

Published: JUL 1 2020, CRYSTAL GROWTH & DESIGN, 20, 4730, DOI: 10.1021/acs.cgd.0c00496

11. SnSe2-Zn-Porphyrin Nanocomposite Thin Films for Threshold Methane Concentration Detection at Room Temperature
Authors: Lorinczi, A; Fagadar-Cosma, E; Socol, G; Mihailescu, A; Matei, E; Sava, F; Stefan, M

Published: DEC 2020, CHEMOSENSORS, 8, DOI: 10.3390/chemosensors8040134

12. One-dimensional coordination polymers constructed from copper(II) ions and chromato bridges: Synthesis, crystal structures and thermal analysis
Authors: Dumbrava, A; Maxim, C; Olar, R; Badea, M; Stefan, M; Grecu, MN; Andruh, M

Published: SEP 1 2020, INORGANICA CHIMICA ACTA, 509, DOI: 10.1016/j.ica.2020.119663

13. Nanoclustered Pd decorated nanocrystalline Zn doped SnO2 for ppb NO2 detection at low temperature
Authors: Somacescu, S; Ghica, C; Simion, CE; Kuncser, AC; Vlaicu, AM; Stefan, M; Ghica, D; Florea, OG; Mercioniu, IF; Stanoiu, A

Published: SEP 1 2019, SENSORS AND ACTUATORS B-CHEMICAL, 294, 156, DOI: 10.1016/j.snb.2019.05.033

14. Tailoring the Dopant Distribution in ZnO:Mn Nanocrystals
Authors: Ghica, D; Vlaicu, ID; Stefan, M; Maraloiu, VA; Joita, AC; Ghica, C

Published: MAY 3 2019, SCIENTIFIC REPORTS, 9, DOI: 10.1038/s41598-019-43388-z

15. X-ray Crystal Structure, Geometric Isomerism, and Antimicrobial Activity of New Copper(II) Carboxylate Complexes with Imidazole Derivatives
Authors: Vlaicu, ID; Borodi, G; Scaeteanu, GV; Chifiriuc, MC; Marutescu, L; Popa, M; Stefan, M; Mercioniu, IF; Maurer, M; Daniliuc, CG; Olar, R; Badea, M

Published: DEC 2018, MOLECULES, 23, DOI: 10.3390/molecules23123253

16. Limits and Particularities of the Synthesis of Ba1-xCaxTiO3 for Piezoelectric Applications, by Topochemical Conversion from Molten Salt Solutions
Authors: Vlaicu, ID; Maraloiu, AV; Ghica, D; Mercioniu, IF; Stefan, M; Vlaicu, AM; Negrea, RF; Kuncser, AC; Bulat, S; Krzmanc, MM; Ciobanu, R; Plopa, O

Published: 2018, 2018 INTERNATIONAL CONFERENCE AND EXPOSITION ON ELECTRICAL AND POWER ENGINEERING (EPE), 1050, DOI:

17. Mn2+ ions distribution in doped sol-gel deposited ZnO films
Authors: Stefan, M; Ghica, D; Nistor, SV; Maraloiu, AV; Plugaru, R

Published: FEB 28 2017, APPLIED SURFACE SCIENCE, 396, 1889, DOI: 10.1016/j.apsusc.2016.02.167

18. Origin and chemical composition of the amorphous material from the intergrain pores of self-assembled cubic ZnS:Mn nanocrystals
Authors: Stefan, M; Vlaicu, ID; Nistor, LC; Ghica, D; Nistor, SV

Published: DEC 31 2017, APPLIED SURFACE SCIENCE, 426, 350, DOI: 10.1016/j.apsusc.2017.07.172

19. Aggregates of Mn2+ Ions in Mesoporous Self-Assembled Cubic ZnS:Mn Quantum Dots: Composition, Localization, Structure, and Magnetic Properties
Authors: Nistor, SV; Stefan, M; Nistor, LC; Kuncser, V; Ghica, D; Vlaicu, ID

Published: JUL 7 2016, JOURNAL OF PHYSICAL CHEMISTRY C, 120, 14466, DOI: 10.1021/acs.jpcc.6b04866

20. Ferritin surplus in mouse spleen 14 months after intravenous injection of iron oxide nanoparticles at clinical dose
Authors: Tamion, A; Hillenkamp, M; Hillion, A; Maraloiu, VA; Vlaicu, ID; Stefan, M; Ghica, D; Rositi, H; Chauveau, F; Blanchin, MG; Wiart, M; Dupuis, V

Published: AUG 2016, NANO RESEARCH, 9, 2410, DOI: 10.1007/s12274-016-1126-6

21. On the agent role of Mn2+ in redirecting the synthesis of Zn(OH)(2) towards nano-ZnO with variable morphology
Authors: Ghica, D; Vlaicu, ID; Stefan, M; Nistor, LC; Nistor, SV

Published: 2016, RSC ADVANCES, 6, 106741, DOI: 10.1039/c6ra23065b

22. Distribution and interaction of Mn2+ ions incorporated in cubic ZnS quantum dots over a broad concentration range
Authors: Nistor, SV; Stefan, M; Nistor, LC; Ghica, D; Vlaicu, ID

Published: MAR 25 2016, JOURNAL OF ALLOYS AND COMPOUNDS, 662, 199, DOI: 10.1016/j.jallcom.2015.11.203

23. Revealing the Cu2+ ions localization at low symmetry Bi sites in photorefractive Bi12GeO20 crystals doped with Cu and V by high frequency EPR
Authors: Nistor, SV; Stefan, M; Goovaerts, E; Ramaz, F; Briat, B

Published: OCT 2015, JOURNAL OF MAGNETIC RESONANCE, 259, 94, DOI: 10.1016/j.jmr.2015.07.009

24. Doping Ultrasmall Cubic ZnS Nanocrystals with Mn2+ Ions over a Broad Nominal Concentration Range
Authors: Nistor, SV; Stefan, M; Nistor, LC; Ghica, D; Vlaicu, ID; Joita, AC

Published: OCT 15 2015, JOURNAL OF PHYSICAL CHEMISTRY C, 119, 23789, DOI: 10.1021/acs.jpcc.5b08113

25. Polarization induced self-doping in epitaxial Pb(Zr0.20Ti0.80)O-3 thin films
Authors: Pintilie, L; Ghica, C; Teodorescu, CM; Pintilie, I; Chirila, C; Pasuk, I; Trupina, L; Hrib, L; Boni, AG; Apostol, NG; Abramiuc, LE; Negrea, R; Stefan, M; Ghica, D

Published: OCT 8 2015, SCIENTIFIC REPORTS, 5, DOI: 10.1038/srep14974

26. Pulse annealing electron paramagnetic resonance with probing transition ions
Authors: Nistor, SV; Stefan, M; Ghica, D

Published: NOV 2014, JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 118, 1031, DOI: 10.1007/s10973-014-3743-1

27. ZnS and ZnO Semiconductor Nanoparticles Doped with Mn2+ Ions. Size Effects Investigated by EPR Spectroscopy
Authors: Stefan, M; Nistor, SV; Ghica, D

Published: 2014, SIZE EFFECTS IN NANOSTRUCTURES: BASICS AND APPLICATIONS, 205, 27, DOI: 10.1007/978-3-662-44479-5_1

28. Evaluation of the Segregation of Paramagnetic Impurities at Grain Boundaries in Nanostructured ZnO Films
Authors: Ghica, D; Stefan, M; Ghica, C; Stan, GE

Published: AUG 27 2014, ACS APPLIED MATERIALS & INTERFACES, 6, 14238, DOI: 10.1021/am5035329

29. Magnetic defects in crystalline Zn(OH)(2) and nanocrystalline ZnO resulting from its thermal decomposition
Authors: Nistor, SV; Ghica, D; Stefan, M; Vlaicu, I; Barascu, JN; Bartha, C

Published: JAN 25 2013, JOURNAL OF ALLOYS AND COMPOUNDS, 548, 227, DOI: 10.1016/j.jallcom.2012.09.016

30. Nanosize induced effects in luminescent ZnS:Mn2+ quantum dots
Authors: Nistor, SV; Stefan, M; Ghica, D; Nistor, LC

Published: SEP 2013, RADIATION MEASUREMENTS, 56, 43, DOI: 10.1016/j.radmeas.2013.01.046

31. Sequential Thermal Decomposition of the Shell of Cubic ZnS/Zn(OH)(2) Core-Shell Quantum Dots Observed With Mn2+ Probing Ions
Authors: Nistor, SV; Ghica, D; Stefan, M; Nistor, LC

Published: OCT 24 2013, JOURNAL OF PHYSICAL CHEMISTRY C, 117, 22028, DOI: 10.1021/jp4063093

32. Correlation of Lattice Disorder with Crystallite Size and the Growth Kinetics of Mn2+ Doped ZnO Nanocrystals Probed by Electron Paramagnetic Resonance
Authors: Stefan, M; Nistor, SV; Ghica, D

Published: MAR 2013, CRYSTAL GROWTH & DESIGN, 13, 1359, DOI: 10.1021/cg400037c

33. Accurate determination of the spin Hamiltonian parameters for Mn2+ ions in cubic ZnS nanocrystals by multifrequency EPR spectra analysis
Authors: Stefan, M; Nistor, SV; Barascu, JN

Published: JUN 2011, JOURNAL OF MAGNETIC RESONANCE, 210, 209, DOI: 10.1016/j.jmr.2011.03.004

34. Substitutional and surface Mn2+ centers in cubic ZnS:Mn nanocrystals. A correlated EPR and photoluminescence study
Authors: Stefan, M; Nistor, SV; Ghica, D; Mateescu, CD; Nikl, M; Kucerkova, R

Published: JAN 20 2011, PHYSICAL REVIEW B, 83, DOI: 10.1103/PhysRevB.83.045301

35. Structural phase transformations in annealed cubic ZnS nanocrystals
Authors: Ghica, D; Nistor, SV; Nistor, LC; Stefan, M; Mateescu, CD

Published: SEP 2011, JOURNAL OF NANOPARTICLE RESEARCH, 13, 4335, DOI: 10.1007/s11051-011-0379-y

36. Crystallization of Disordered Nanosized ZnO Formed by Thermal Decomposition of Nanocrystalline Hydrozincite
Authors: Nistor, SV; Nistor, LC; Stefan, M; Ghica, D; Aldica, G; Barascu, JN

Published: NOV 2011, CRYSTAL GROWTH & DESIGN, 11, 5038, DOI: 10.1021/cg2009286

37. Local Structure at Mn2+ Ions in Vacuum Annealed Small Cubic ZnS Nanocrystals Self-Assembled Into a Mesoporous Structure
Authors: Nistor, SV; Ghica, D; Nistor, LC; Stefan, M; Mateescu, CD

Published: OCT 2011, JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 11, 9303, DOI: 10.1166/jnn.2011.4306

38. Specificity of defects induced in silicon by RF-plasma hydrogenation
Authors: Ghica, C; Nistor, LC; Stefan, M; Ghica, D; Mironov, B; Vizireanu, S; Moldovan, A; Dinescu, M

Published: MAR 2010, APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 98, 785, DOI: 10.1007/s00339-009-5527-1

39. Study of the Kramers rare earth ions ground multiplet with a large orbital contribution by multifrequency EPR spectroscopy: Ce3+ in PbWO4 scintillator
Authors: Popescu, FF; Bercu, V; Barascu, JN; Martinelli, M; Massa, CA; Pardi, LA; Stefan, M; Nistor, SV; Nikl, M

Published: MAR 2010, OPTICAL MATERIALS, 32, 575, DOI: 10.1016/j.optmat.2009.11.015

40. IMPROVING THE CUBIC ZnS NANOCRYSTALS QUALITY BY SELF-ASSEMBLING INTO A MESOPOROUS STRUCTURE
Authors: Nistor, SV; Nistor, LC; Stefan, M; Ghica, D; Mateescu, CD; Birjega, R

Published: 2010, ROMANIAN REPORTS IN PHYSICS, 62, 328, DOI:

41. Multifrequency ESR Characterization of Paramagnetic Point Defects in Semiconducting Cubic BN Crystals
Authors: Nistor, SV; Stefan, M; Ghica, D; Goovaerts, E

Published: OCT 2010, APPLIED MAGNETIC RESONANCE, 39, 101, DOI: 10.1007/s00723-010-0136-x

42. Lattice defect assisted incorporation of Mn2+ ions in cubic II-VI semiconductor quantum dots
Authors: Nistor, SV; Stefan, M; Nistor, LC; Ghica, D; Mateescu, CD; Barascu, JN

Published: 2010, 11TH EUROPHYSICAL CONFERENCE ON DEFECTS IN INSULATING MATERIALS (EURODIM 2010), 15, DOI: 10.1088/1757-899X/15/1/012024

43. Incorporation and localization of substitutional Mn2+ ions in cubic ZnS quantum dots
Authors: Nistor, SV; Stefan, M; Nistor, LC; Goovaerts, E; Van Tendeloo, G

Published: JAN 15 2010, PHYSICAL REVIEW B, 81, DOI: 10.1103/PhysRevB.81.035336

44. Localization of Mn2+ Ions in Mesoporous ZnS
Authors: Nistor, SV; Stefan, M; Nistor, LC; Mateescu, CD; Birjega, R

Published: SEP 2010, JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 10, 6205, DOI: 10.1166/jnn.2010.2599

45. Synthesis and characterization of Mn2+ doped ZnS nanocrystals self-assembled in a tight mesoporous structure
Authors: Nistor, SV; Nistor, LC; Stefan, M; Mateescu, CD; Birjega, R; Solovieva, N; Nikl, M

Published: JUL-AUG 2009, SUPERLATTICES AND MICROSTRUCTURES, 46, 311, DOI: 10.1016/j.spmi.2008.10.001

46. In-depth investigation of EPR spectra of Mn2+ ions in ZnS single crystals with pure cubic structure
Authors: Nistor, SV; Stefan, M

Published: APR 8 2009, JOURNAL OF PHYSICS-CONDENSED MATTER, 21, DOI: 10.1088/0953-8984/21/14/145408

47. Study of the ground multiplet of Kramers rare earth ions in solid matrices by multifrequency electron paramagnetic resonance spectroscopy: Nd3+ in PbWO4 single-crystals
Authors: Popescu, FF; Bercu, V; Barascu, JN; Martinelli, M; Massa, CA; Pardi, LA; Stefan, M; Nistor, SV; Nikl, M; Bohacek, P

Published: JUL 21 2009, JOURNAL OF CHEMICAL PHYSICS, 131, DOI: 10.1063/1.3180697

48. Study of the ground multiplet of Kramers rare earth ions in solid matrices by multifrequency electron paramagnetic resonance spectroscopy: Nd3+ in PbWO4 single-crystals (vol 131, 034505, 2009)
Authors: Popescu, FF; Bercu, V; Barascu, JN; Martinelli, M; Massa, CA; Pardi, LA; Stefan, M; Nistor, SV; Nikl, M; Bohacek, P

Published: DEC 28 2009, JOURNAL OF CHEMICAL PHYSICS, 131, DOI: 10.1063/1.3280223

49. Electron and hole trapping in irradiated PbBr2 : Tl single crystals
Authors: Stefan, M; Nistor, SV; Darabont, A; Neamtu, C; Goovaerts, E

Published: JUN 2008, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 266, 2761, DOI: 10.1016/j.nimb.2008.03.179

50. Irradiation defects in superhard cubic boron nitride single crystals
Authors: Nistor, SV; Ghica, D; Stefan, M; Nistor, LC; Goovaerts, E; Taniguchi, T

Published: JUN 2008, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 266, 2787, DOI: 10.1016/j.nimb.2008.03.117

51. Electron paramagnetic resonance properties of Gd3+ ions in PbWO4 scintillator crystals
Authors: Nistor, SV; Stefan, M; Goovaerts, E; Nikl, M; Bohacek, P

Published: JAN 18 2006, JOURNAL OF PHYSICS-CONDENSED MATTER, 18, 728, DOI: 10.1088/0953-8984/18/2/025

52. Single-ion and molecular contributions to the zero-field splitting in an iron(III)-oxo dimer studied by single crystal W-band EPR
Authors: ter Heerdt, P; Stefan, M; Goovaerts, E; Caneschi, A; Cornia, A

Published: MAR 2006, JOURNAL OF MAGNETIC RESONANCE, 179, 37, DOI: 10.1016/j.jmr.2005.10.016

53. Temperature dependence of the electron paramagnetic resonance spectra of Mn2+, impurity ions in PbWO4 single crystals
Authors: Stefan, M; Nistor, SV; Goovaerts, E; Nikl, M; Bohacek, P

Published: FEB 2 2005, JOURNAL OF PHYSICS-CONDENSED MATTER, 17, 728, DOI: 10.1088/0953-8984/17/4/014

54. EPR characterization of Mn2+ impurity ions in PbWO4 single crystals
Authors: Nistor, SV; Stefan, M; Goovaerts, E; Nikl, M; Bohacek, P

Published: AUG-DEC 2004, RADIATION MEASUREMENTS, 38, 658, DOI: 10.1016/j.radmeas.2003.12.024

55. EPR probing of low temperature structural phases of Rb2ZnCl4 crystals with Tl-0 and Tl2+ centers
Authors: Stefan, M; Nistor, SV; Goovaerts, E; Schoemaker, D

Published: MAR 2004, PHYSICAL REVIEW B, 69, DOI: 10.1103/PhysRevB.69.104107

56. ESR characterization of point defects in amber colored c-BN super abrasive powders
Authors: Nistor, SV; Ghica, D; Stefan, M; Bouwen, A; Goovaerts, E

Published: SEP 2004, PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 201, 2590, DOI: 10.1002/pssa.200405194

57. EPR study of the low temperature ferroelectic phase transition in Cu2+ doped Rb2ZnCl4 single crystals
Authors: Stefan, M; Nistor, SV; Schoemaker, D; Ursu, L

Published: SEP 2003, SOLID STATE COMMUNICATIONS, 127, 698, DOI: 10.1016/S0038-1098(03)00649-5

58. Tl-0 and Tl2+ centers as paramagnetic probes for the 74K phase transition in Rb2ZnCl4
Authors: Stefan, M; Nistor, SV; Schoemaker, D

Published: 2002, RADIATION EFFECTS AND DEFECTS IN SOLIDS, 157, 697, DOI: 10.1080/10420150215809

59. Fourth-order zero-field splitting parameters of [Mn(cyclam)Br-2]Br determined by single-crystal W-band EPR
Authors: Mossin, S; Stefan, M; ter Heerdt, P; Bouwen, A; Goovaerts, E; Weihe, H

Published: 2001, APPLIED MAGNETIC RESONANCE, 21, 596, DOI: 10.1007/BF03162431

60. Point defects in cubic boron nitride crystals
Authors: Nistor, SV; Stefan, M; Goovaerts, E; Bouwen, A; Schoemaker, D; Dinca, G

Published: MAR-JUL 2001, DIAMOND AND RELATED MATERIALS, 10, 1411, DOI: 10.1016/S0925-9635(00)00396-4

61. Atomic 6p-Tl-0 centers in ferroelectric Rb2ZnCl4 crystals
Authors: Stefan, M; Nistor, SV; Schoemaker, D

Published: 2001, RADIATION EFFECTS AND DEFECTS IN SOLIDS, 155, 377, DOI: 10.1080/10420150108214140

62. Multifrequency ESR studies of paramagnetic point defects in cubic boron nitride crystals
Authors: Nistor, SV; Stefan, M; Schoemaker, D; Goovaerts, E; Dinca, G

Published: 2001, RADIATION EFFECTS AND DEFECTS IN SOLIDS, 156, 194, DOI: 10.1080/10420150108216892

63. Single-crystal high-frequency electron paramagnetic resonance investigation of a tetranuclear iron(III) single-molecule magnet
Authors: Bouwen, A; Caneschi, A; Gatteschi, D; Goovaerts, E; Schoemaker, D; Sorace, L; Stefan, M

Published: APR 5 2001, JOURNAL OF PHYSICAL CHEMISTRY B, 105, 2663, DOI: 10.1021/jp003441d

64. Nitrogen and hydrogen in thick diamond films grown by microwave plasma enhanced chemical vapor deposition at variable H-2 flow rates
Authors: Nistor, SV; Stefan, M; Ralchenko, V; Khomich, AV; Schoemaker, D

Published: JUN 15 2000, JOURNAL OF APPLIED PHYSICS, 87, 8746, DOI: 10.1063/1.373604

65. Electron-hole recombination in PbCl2 : T1 crystals
Authors: Nistor, SV; Stefan, M; Goovaerts, E; Schoemaker, D

Published: MAY 2000, JOURNAL OF LUMINESCENCE, 87-9, 551, DOI: 10.1016/S0022-2313(99)00287-2

66. EPR observation of first point defects in cubic boron nitride crystalline powders
Authors: Nistor, SV; Stefan, M; Schoemaker, D; Dinca, G

Published: 2000, SOLID STATE COMMUNICATIONS, 115, 44, DOI: 10.1016/S0038-1098(00)00135-6

67. ESR of paramagnetic atom defects in CVD-grown diamond
Authors: Nistor, SV; Stefan, M; Ralchenko, V; Goovaerts, E; Schoemaker, D

Published: 1999, RADIATION EFFECTS AND DEFECTS IN SOLIDS, 149, 307, DOI: 10.1080/10420159908230172

68. ESR of trapped-electron Fe+ centres in chlorinated SrCl2 crystals
Authors: Nistor, SV; Stefan, M; Bouwen, A; Schoemaker, D

Published: 1999, RADIATION EFFECTS AND DEFECTS IN SOLIDS, 149, 207, DOI: 10.1080/10420159908230156

69. ESR of paramagnetic Tl2+-type centres in Rb2ZnCl4 crystals
Authors: Stefan, M; Nistor, SV; Schoemaker, D

Published: 1999, RADIATION EFFECTS AND DEFECTS IN SOLIDS, 150, 368, DOI: 10.1080/10420159908226258

70. Growth of pure and doped Rb2ZnCl4 and K2ZnCl4 single crystals by Czochralski technique
Authors: Stefan, M; Nistor, SV; Mateescu, DC; Abakumov, AM

Published: APR 1999, JOURNAL OF CRYSTAL GROWTH, 200, 154, DOI: 10.1016/S0022-0248(98)01247-0

71. Off-center displacement of Fe+ ions in irradiated SrCl2 : Fe crystals grown in chlorine
Authors: Nistor, SV; Stefan, M; Schoemaker, D

Published: AUG 1999, PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 214, 236, DOI: 10.1002/(SICI)1521-3951(199908)214:2<229::AID-PSSB229>3.0.CO;2-H

72. Electron and hole trapping in PbCl2 and PbCl2 : Tl crystals
Authors: Nistor, SV; Goovaerts, E; Stefan, M; Schoemaker, D

Published: MAY 1998, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 141, 541, DOI: 10.1016/S0168-583X(98)00051-2

73. Localization and charge conversion of copper in Rb2ZnCl4:Cu crystals: An ESR and optical absorption study
Authors: Stefan, M; Nistor, SV; Grecu, NM; Schoemaker, D

Published: AUG 1997, PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 202, 1011, DOI: 10.1002/1521-3951(199708)202:2<999::AID-PSSB999>3.0.CO;2-5

Load More

Back to top

Copyright © 2024 National Institute of Materials Physics. All Rights Reserved