NDLI: Electron Spin Resonance study of charge trapping in α-ZnMoO4 single crystal scintillator

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Electron Spin Resonance study of charge trapping in α-ZnMoO4 single crystal scintillator

Content Provider	Semantic Scholar
Author	Buryi, Maksym Spassky, Dmitry A. Hybler, Jiří Laguta, Valentin Nikl, Martin
Copyright Year	2015
Abstract	Abstract The origin and properties of electron and hole traps simultaneously appearing in α-ZnMoO 4 scintillator after X-ray irradiation at low temperatures ( T 95,97 Mo and 67 Zn lattice nuclei. Considering the nearly tetragonal symmetry of the center this allows us to identify the electron trap as an electron self-trapped at the (Mo(1)O 4 ) 2− complex. Nearly 60% reduction of the spin–orbit coupling at the Mo(1) ion is caused by the overlap of the Mo and ligand oxygen orbitals indicating an essential delocalization of the electron over the complex. Holes created by the X-ray irradiation form the O − type defects. Superhyperfine structure of their ESR spectra shows the contributions from two groups of 95,97 Mo nuclei and from 25 Mg nucleus as an uncontrolled impurity. It proves that namely the O(3) regular oxygen site is transformed into the O − center after the X-ray irradiation. Spectral parameters of the traps have been analyzed in the framework of the crystal field theory.
Starting Page	244
Ending Page	250
Page Count	7
File Format	PDF HTM / HTML
DOI	10.1016/j.optmat.2015.05.032
Alternate Webpage(s)	https://istina.msu.ru/download/10571223/1gf7AO:gRx--ptXrQ_0bPZPNIopEJFBcOI/
Alternate Webpage(s)	https://doi.org/10.1016/j.optmat.2015.05.032
Volume Number	47
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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