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Temperature dependence of Mn2+ EPR in Sn2P2S6 near the phase transition

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Abstract

The X-band EPR spectrum of Mn2+ in Sn2P2S6 was studied in the temperature rangeT=223–363 K. At room temperature the spin-Hamiltonian constants areg=2.00±0.01,B 02 =(163±3)·10−4 cm−1,B 22 =(159±3)·10−4 cm−1,A=−(75±1)·10−4 cm−1. The effect of the invariance in temperature of the resonance magnetic fields in the narrow temperature rangeT=337–340 K and the model of the paramagnetic centre are discussed. According to EPR data a phase transition occurs atT=337 K. This transition from the paraelectric phase to the ferroelectric one is accompanied by a dramatic change in value of the spin-Hamiltonian constantB 02 .

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  1. Institute of Semiconductors of the Ukrainian Academy of Sciences, pr. Nauki 45, 252028, Kiev, USSR

    I. N. Geifman, I. V. Kozlova, U. M. Vysochanski, V. Ya. Kofman & O. A. Mikailo

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  1. I. N. Geifman
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  2. I. V. Kozlova
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  3. U. M. Vysochanski
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  4. V. Ya. Kofman
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  5. O. A. Mikailo
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Geifman, I.N., Kozlova, I.V., Vysochanski, U.M. et al. Temperature dependence of Mn2+ EPR in Sn2P2S6 near the phase transition. Appl Magn Reson 2, 435–440 (1991). https://doi.org/10.1007/BF03166054

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  • DOI: https://doi.org/10.1007/BF03166054

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