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

页码：347 / 352

页数：6

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