EPR Study of VO2+ Doped Diammonium Tricadmium Tetrakis (Sulfate) Pentahydrate [(NH4)2Cd3(SO4)4•5H2O] Single Crystals

被引：4
|
作者：
Kartal, Ibrahim [1 ]
Karabulut, Buenyamin [1 ]
Bozkurt, Esat [1 ]
机构：
[1] Ondokuz Mayis Univ, Sci & Art Fac, Dept Phys, TR-55139 Samsun, Turkey
来源：
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES | 2010年 / 65卷 / 04期
关键词：
EPR; ESR; Vanadyl Ion; Single Crystal; ELECTRON-PARAMAGNETIC-RESONANCE; OPTICAL-ABSORPTION; VANADYL IONS; SPECTRA; CU2+; ESR; CADMIUM; GLASSES;
D O I：
10.1515/zna-2010-0412
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Electron paramagnetic resonance (EPR) studies are carried out on vanadyl (VO2+) ions in diammonium tricadmium tetrakis (sulfate) pentahydrate single crystals at room temperature. The EPR spectra of a single crystal exhibit resonance signals characteristic to VO2+ ions. The analysis of EPR spectra indicates that the VO2+ ions in single crystals show two magnetically inequivalent VO2+ sites in distinct orientations occupying substitutional positions in the lattice and showing very high angular dependence. They form in octahedral coordination with tetragonal compression with C-4v symmetry. The spin Hamiltonian parameters are determined, and these parameters have been used to estimate the bonding coefficients of the VO2+ ion in a diammonium tricadmium tetrakis (sulfate) pentahydrate lattice. The parallel and perpendicular components of axially symmetric g and hyperfine (A) tensors are evaluated and the results are discussed and compared with previous reports.
引用
收藏
页码：347 / 352
页数：6
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