EPR of Nd3+ and Er3+ ions in aluminum borates YAl3(BO3)4 and EuAl3(BO3)4

被引：19

作者：

Prokhorov, A. D. ^{[1
]}

Prokhorov, A. A. ^{[1
]}

Chernysh, L. F. ^{[1
]}

Aleshkevich, P. ^{[2
]}

Dyakonov, V. ^{[1
,2
]}

Szymczak, H. ^{[2
]}

机构：

[1] NANU, AA Galkin Donetsk Phys Tech Inst, UA-83114 Donetsk, Ukraine

[2] PAS, Inst Phys, PL-02668 Warsaw, Poland

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2013年 / 326卷

关键词：

EPR spectrum; Rare-earth aluminum borate; Linewidth; G-factor; Hyperfine interaction; Spin-phonon interaction; Spin-lattice relaxation; SPIN-HAMILTONIAN PARAMETERS; ENERGY-LEVELS; SPECTRA;

D O I：

10.1016/j.jmmm.2012.07.049

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

EPR spectra of impurity Nd3+ and Er3+ ions in aluminum borates YAl3(BO3)(4) and EuAl3(BO3)(4) have been studied. Dependences of g-factors and linewidth as a function of temperature are established, and the hyperfine interaction constants are determined. Temperature dependences of linewidth of Nd3+ and Er3+ ions in both crystals are identical. The absorption line broadening with increasing temperature is caused by strong spin-phonon interaction and is described by the Orbach-Aminov process. Unlike Nd3+ ion, an anisotropy of temperature dependence of Er3+ ion linewidth is observed. The relaxation velocity of Er3+ ions is lower then that of Nd3+ ions. The anisotropy of spin-lattice relaxation observed for Er3+ ion is due to a large g-factor anisotropy which is larger in the EuAl3(BO3)(4) crystal than in YAl3(BO3)(4) one. A decrease of g-factor of Er3+ ion in both crystals with increasing temperature is shown to result from spin-phonon interaction. Crown Copyright (C) 2012 Published by Elsevier B.V. All rights reserved.

引用

页码：162 / 165

页数：4

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