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Ground and excited states of iron centers in ZnO: pulse-EPR and magneto-optical spectroscopy
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SYSNO ASEP 0451734 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Ground and excited states of iron centers in ZnO: pulse-EPR and magneto-optical spectroscopy Author(s) Azamat, Dmitry (FZU-D) RID, ORCID
Debus, J. (DE)
Yakovlev, D.R. (DE)
Ivanov, V.Yu. (RU)
Godlewski, M. (PL)
Fanciulli, M. (IT)
Bayer, M. (DE)Source Title Physical Review. B - ISSN 1098-0121
Roč. 92, č. 19 (2015), "195202-1"-"195202-9"Number of pages 9 s. Language eng - English Country US - United States Keywords paramagnetic-resonance ; transient nutations ; decay ; Fe ; oscillations ; solids ; oxide ; ions Subject RIV BM - Solid Matter Physics ; Magnetism R&D Projects GAP108/11/0958 GA ČR - Czech Science Foundation (CSF) LM2011029 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support FZU-D - RVO:68378271 UT WOS 000364016300004 EID SCOPUS 84947093102 DOI 10.1103/PhysRevB.92.195202 Annotation We report on the ground- and excited-state properties of Fe3+ centers in hydrothermally and chemical-vapor-transport grown single ZnO crystals studied by continuous-wave electron-paramagnetic resonance (EPR) under dark and laser-illuminated conditions, pulsed-EPR and magneto-photoluminescence. By use of EPR experiments, the fine-structure parameters of the Fe3+ spin Hamiltonian are determined. Three types of charge-compensated Fe3+ centers are identified and the charge conversion from Fe2+ to Fe3+ is highlighted. The magneto-optical studies of the Zeeman components of the spin-forbidden electric-dipole transitions from excited 4T1(G) to ground 6 A1(6S) states of the Fe3+ center indicate the trigonal symmetry of the fine structure of the lowest Γ8(4T1) excited state. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2016
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