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Fluctuation-induced broadening of Mn2+ EPR lines in the incommensurate phase of Rb2ZnCl4 crystals

  • Magnetism and Ferroelectricity
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Abstract

The EPR spectra of Mn2+ ions in Rb2ZnCl4 crystals is investigated in the vicinity of the transition from the paraelectric phase to an incommensurate modulated phase. When these crystals are cooled below the transition temperature T i =304 K, a splitting of the resonance lines is observed in the singular spectrum. A one-harmonic model is used to discuss the contributions that fluctuations in the amplitude and phase of the incommensurate displacement wave make to the local width of the singular spectra. It is shown that anomalies in the local width of the low-temperature singular peaks observed in the vicinity of T i are caused by amplitude fluctuations.

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Authors and Affiliations

  1. Dnepropetrovsk State University, 320625, Dnepropetrovsk, Ukraine

    M. P. Trubitsyn

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  1. M. P. Trubitsyn
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Fiz. Tverd. Tela (St. Petersburg) 41, 1668–1674 (September 1999)

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Trubitsyn, M.P. Fluctuation-induced broadening of Mn2+ EPR lines in the incommensurate phase of Rb2ZnCl4 crystals. Phys. Solid State 41, 1528–1533 (1999). https://doi.org/10.1134/1.1131016

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  • DOI: https://doi.org/10.1134/1.1131016

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