Specific features of the substitution of Fe<Superscript>3+</Superscript> impurity ions for Zr<Superscript>4+</Superscript> in NaZr<Subscript>2</Subscript>(PO<Subscript>4</Subscript>)<Subscript>3</Subscript> single crystals期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Specific features of the substitution of Fe3+ impurity ions for Zr4+ in NaZr2(PO4)3 single crystals

Authors:	G. R. Bulka V. M. Vinokurov A. A. Galeev G. A. Denisenko N. M. Khasanova G. V. Kanunnikov N. M. Nizamutdinov S. V. Stefanovsky A. Yu. Trul

Affiliation:	(1) Kazan State University, Kremlevskaya ul. 18, Kazan, 420008 Tatarstan, Russia;(2) Shubnikov Institute of Crystallography, Russian Academy of Sciences, Leninskii pr. 59, Moscow, 119333, Russia;(3) NPO Radon, Sed’moi Rostovskii per. 2/14, Moscow, 119121, Russia

Abstract:	The EPR spectra of Fe³⁺ impurity ions in NaZr₂(PO₄)₃ single crystals at 300 K are investigated, and the spin Hamiltonian of these ions is determined. A comparative analysis of the spin-Hamiltonian and crystal-field tensors is performed using the maximum invariant component method. It is demonstrated that Fe³⁺ impurity ions substitute for Zr⁴⁺ ions with local compensator ions located in cavities of the B type. It is revealed that the invariant of the spin-Hamiltonian tensor B₄ and the crystal-field tensor V ₄ ⁴⁴ depend substantially on the mutual arrangement of ions in the first and second coordination spheres. The corresponding dependences are analyzed.

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