Abstract.
In this paper the spectra of Gd3+ ions studied by electron spin resonance (ESR) in four types of tungstate crystals KY(WO4)2, CdWO4, CsLa(WO4)2 and La2(WO4)3 are discussed. The tungstate crystals were grown by the low-temperature gradient Czochralski technique with Gd2O3 addition in melt. The estimation of spin Hamiltonian (SH) parameters was realized using an original simulation program developed. The parameters of crystalline field in oxide crystals are comparable with Zeeman interaction so the solution of the Schrödinger equation was realized numerically. We have estimated 36 SH parameters from ESR angular diagrams of Gd3+, including g x , g y , g z , g i (where i = 1, …, 6), B m n, C m n (where m = 2, …, 6, n = 0 (or 1 for C m n), …, m), and the Euler angles. The positions of Gd3+ ions in the crystal structures, the charge compensation and the influence of lattice parameters on the SH parameters B 2 0 and B 2 2 are discussed in this paper as well.
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Authors' address: Nikolay V. Cherney, Institute of Inorganic Chemistry, Russian Academy of Sciences, Lavrentyev av. 3, Novosibirsk 630090, Russian Federation
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Cherney, N., Nadolinny, V. & Pavlyuk, A. ESR Investigation of Gd3+ Ion Introduction into the Structure of Simple and Double Tungstates. Appl Magn Reson 33, 45–55 (2008). https://doi.org/10.1007/s00723-008-0057-0
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DOI: https://doi.org/10.1007/s00723-008-0057-0