This article is cited in 8 papers

Magnetism

Eu$^{151,53}$ electron paramagnetic resonance in SrMoO$_4$ and determination of signs of spin Hamiltonian parameters at different temperatures

A. D. Gorlov

Ural Federal University Scientific Research Institute of Physics and Applied Mathematics, Ekaterinburg

Abstract: The electron paramagnetic resonance (EPR) spectra of Eu$^{2+}$ impurity centers in SrMoO$_4$ crystals have been studied in the temperature range of 1.8, 100–300 K. A hyperfine structure has been simulated for 151,153Eu of different EPR transitions observed experimentally at different temperatures and external magnetic field orientations. A unique set of all parameters of the spin Hamiltonian for the known sign of the hyperfine interaction parameters $A_i$ has been determined. It has been found that the diagonal parameters $|b_n^0|$ of the spin Hamiltonian decrease with increasing temperature; however, the parameter $b_4^4$ increases. The results of the study have demonstrated that $|b_2^0(T)/P_2^0(T)\sim\operatorname{const}$ for Eu$^{151,153}$ in this single crystal.

Received: 27.03.2014
Accepted: 18.04.2014

 English version: Physics of the Solid State, 2014, 56:11, 2185–2190

Bibliographic databases:

•