This article is cited in 17 papers

Ferroelectricity

Family of paramagnetic centers of Ce$^{3+}$ ions in yttrium aluminum garnet

G. R. Asatryan^a, D. D. Kramushchenko^a, Yu. A. Uspenskaya^a, P. G. Baranov^a, A. G. Petrosyan<sup>b

a</sup> Ioffe Institute, St. Petersburg
^b Institute for Physical Research, National Academy of Sciences of Armenia

Abstract: The electron paramagnetic resonance (EPR) spectra of Ce$^{3+}$ ions in single crystals of yttrium aluminum garnet have been investigated. It has been found that, in addition to the usually observed EPR signals of Ce$^{3+}$ ions located in the regular environment at dodecahedral sites of the crystal lattice, the spectra contain a group of less intense anisotropic lines with $g$-factors close to the corresponding parameters of Ce$^{3+}$ ions in the regular environment. It has been concluded that the observed satellite lines belong to the family of Ce$^{3+}$ ions in the immediate vicinity of which there are permutation defects that lead to a change in the strength and symmetry of the crystal field in the vicinity of the paramagnetic center.

Received: 26.12.2013

 English version: Physics of the Solid State, 2014, 56:6, 1150–1156

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