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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
Published: OCT 8 2015, SCIENTIFIC REPORTS, 5, DOI: 10.1038/srep14974
26. Pulse annealing electron paramagnetic resonance with probing transition ions
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
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
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
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
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
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
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
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
Published: JAN 20 2011, PHYSICAL REVIEW B, 83, DOI: 10.1103/PhysRevB.83.045301
35. Structural phase transformations in annealed cubic ZnS nanocrystals
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
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
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
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
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
41. Multifrequency ESR Characterization of Paramagnetic Point Defects in Semiconducting Cubic BN Crystals
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
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
Published: JAN 15 2010, PHYSICAL REVIEW B, 81, DOI: 10.1103/PhysRevB.81.035336
44. Localization of Mn2+ Ions in Mesoporous ZnS
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
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
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
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)
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
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
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
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
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
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
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
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
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
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
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
Published: 2001, APPLIED MAGNETIC RESONANCE, 21, 596, DOI: 10.1007/BF03162431
60. Point defects in cubic boron nitride crystals
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
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
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
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
Published: JUN 15 2000, JOURNAL OF APPLIED PHYSICS, 87, 8746, DOI: 10.1063/1.373604
65. Electron-hole recombination in PbCl2 : T1 crystals
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
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
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
Published: 1999, RADIATION EFFECTS AND DEFECTS IN SOLIDS, 149, 207, DOI: 10.1080/10420159908230156
69. ESR of paramagnetic Tl2+-type centres in Rb2ZnCl4 crystals
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
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
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
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
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
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