EPR investigation of the trivalent chromium complexes in SrTiO3

被引：1

作者：

Azamat, D. V. ^{[1
]}

Dejneka, A. ^{[1
]}

Lancok, J. ^{[1
]}

Jastrabik, L. ^{[1
]}

Trepakov, V. A. ^{[1
,2
]}

Bryknar, Z. ^{[3
]}

Neverova, E. V. ^{[2
]}

Badalyan, A. G. ^{[2
]}

机构：

[1] Acad Sci Czech Republic, Inst Phys, Prague 18221 8, Czech Republic

[2] Russian Acad Sci, AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia

[3] Czech Tech Univ, Fac Nucl Sci & Phys Engn, Prague 12000 2, Czech Republic

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2014年 / 75卷 / 02期

关键词：

Inorganic compounds; Electron paramagnetic resonance (EPR); Magnetic properties; ELECTRON-SPIN RESONANCE; PARAMAGNETIC-RESONANCE; NONVOLATILE MEMORY; DEBYE TEMPERATURES; DOPED SRTIO3; TRANSITION; CRYSTALS; CENTERS; CR-3;

D O I：

10.1016/j.jpcs.2013.10.003

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The trivalent chromium centers were investigated by means of electron paramagnetic resonance (EPR) in SrTiO3 single crystals grown using the Verneuil technique. It was shown that the charge compensation of the Cr3+-V-O dominant centers in octahedral environment is due to the remote oxygen vacancy located on the axial axis of the center. In order to provide insight into spin-phonon relaxation processes the studies of axial distortion of Cr3+-V-O centers have been performed as function of temperature. The analysis of the trigonal Cr3+ centers found in SrTiO3 indicates the presence of the nearest-neighbor strontium vacancy. The next-nearest-neighbor exchange-coupled pairs of Cr3+ in SrTiO3 has been analyzed from the angular variation of the total electron spin of S=2 resonance lines. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：271 / 275

页数：5

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