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Title: Effect of the Lattice and Spin-Phonon Contributions on the Temperature Behavior of the Ground State Splitting of Gd{sup 3+} in SrMoO{sub 4}

Abstract

The temperature behavior of the EPR spectra of the Gd{sup 3+} impurity center in single crystals of SrMoO{sub 4} in the temperature range T = 99–375 K is studied. The analysis of the temperature dependences of the spin Hamiltonian b{sub 2}{sup 0}(T) = b{sub 2}(F) + b{sub 2}(L) and P{sub 2}{sup 0}(T) = P{sub 2}(F) + P{sub 2}(L) (for Gd{sup 157}) describing the EPR spectrum and contributing to the Gd{sup 3+} ground state splitting ΔE is carried out. In terms of the Newman model, the values of b{sub 2}(L) and P{sub 2}(L) depending on the thermal expansion of the static lattice are estimated; the b{sub 2}(F) and P{sub 2}(F) spin-phonon contributions determined by the lattice ion oscillations are separated. The analysis of b{sub 2}{sup 0}(T) and P{sub 2}{sup 0}(T) is evidence of the positive contribution of the spin-phonon interaction; the model of the local oscillations of the impurity cluster with close frequencies ω describes well the temperature behavior of b{sub 2}(F) and P{sub 2}(F).

Authors:
 [1]
  1. Institute of Natural Sciences and Mathematics of Ural Federal University (Russian Federation)
Publication Date:
OSTI Identifier:
22771440
Resource Type:
Journal Article
Journal Name:
Physics of the Solid State
Additional Journal Information:
Journal Volume: 60; Journal Issue: 2; Other Information: Copyright (c) 2018 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7834
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ELECTRON SPIN RESONANCE; GADOLINIUM 157; GADOLINIUM ADDITIONS; GADOLINIUM IONS; GROUND STATES; HAMILTONIANS; IMPURITIES; INTERACTIONS; MOLYBDATES; MONOCRYSTALS; OSCILLATIONS; PHONONS; SPECTRA; SPIN; STRONTIUM COMPOUNDS; TEMPERATURE DEPENDENCE; THERMAL EXPANSION

Citation Formats

Gorlov, A. D., E-mail: Anatoliy.Gorlov@urfu.ru. Effect of the Lattice and Spin-Phonon Contributions on the Temperature Behavior of the Ground State Splitting of Gd{sup 3+} in SrMoO{sub 4}. United States: N. p., 2018. Web. doi:10.1134/S1063783418020117.
Gorlov, A. D., E-mail: Anatoliy.Gorlov@urfu.ru. Effect of the Lattice and Spin-Phonon Contributions on the Temperature Behavior of the Ground State Splitting of Gd{sup 3+} in SrMoO{sub 4}. United States. doi:10.1134/S1063783418020117.
Gorlov, A. D., E-mail: Anatoliy.Gorlov@urfu.ru. Thu . "Effect of the Lattice and Spin-Phonon Contributions on the Temperature Behavior of the Ground State Splitting of Gd{sup 3+} in SrMoO{sub 4}". United States. doi:10.1134/S1063783418020117.
@article{osti_22771440,
title = {Effect of the Lattice and Spin-Phonon Contributions on the Temperature Behavior of the Ground State Splitting of Gd{sup 3+} in SrMoO{sub 4}},
author = {Gorlov, A. D., E-mail: Anatoliy.Gorlov@urfu.ru},
abstractNote = {The temperature behavior of the EPR spectra of the Gd{sup 3+} impurity center in single crystals of SrMoO{sub 4} in the temperature range T = 99–375 K is studied. The analysis of the temperature dependences of the spin Hamiltonian b{sub 2}{sup 0}(T) = b{sub 2}(F) + b{sub 2}(L) and P{sub 2}{sup 0}(T) = P{sub 2}(F) + P{sub 2}(L) (for Gd{sup 157}) describing the EPR spectrum and contributing to the Gd{sup 3+} ground state splitting ΔE is carried out. In terms of the Newman model, the values of b{sub 2}(L) and P{sub 2}(L) depending on the thermal expansion of the static lattice are estimated; the b{sub 2}(F) and P{sub 2}(F) spin-phonon contributions determined by the lattice ion oscillations are separated. The analysis of b{sub 2}{sup 0}(T) and P{sub 2}{sup 0}(T) is evidence of the positive contribution of the spin-phonon interaction; the model of the local oscillations of the impurity cluster with close frequencies ω describes well the temperature behavior of b{sub 2}(F) and P{sub 2}(F).},
doi = {10.1134/S1063783418020117},
journal = {Physics of the Solid State},
issn = {1063-7834},
number = 2,
volume = 60,
place = {United States},
year = {2018},
month = {2}
}