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Zero-field splitting in NiSiF6−6H2O and its pressure, stress and temperature dependences: A supplementary study

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Abstract

The zero-field splitting in NiSiF6−6H2O was studied as a function, of hydrostatic pressure and uniaxial stress at temperatures above and below 220 K, at which the crystal exhibits a secondorder phase transition. The anisotropy of the thermal expansion coefficients parallel and perpendicular to the trigonal symmetry axis was measured in a wide range of temperatures. On the basis of the obtained data the spin-phonon interaction has been separated from the thermal expansion of the crystal. At high and low temperatures the two contributions have opposite signs and exhibit much higher values above 220 K than below this temperature. This is explained by the high anisotropy of the thermal expansion of the crystal characteristic of the high-temperature phase.

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  1. Institute of Molecular Physics, Polish Academy of Sciences, Mariana Smoluchowskiego 17, 60-179, Poznań, Poland

    M. Krupski & A. Krupska

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  1. M. Krupski
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  2. A. Krupska
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Correspondence to M. Krupski.

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Krupski, M., Krupska, A. Zero-field splitting in NiSiF6−6H2O and its pressure, stress and temperature dependences: A supplementary study. Appl. Magn. Reson. 24, 277–284 (2003). https://doi.org/10.1007/BF03166929

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  • DOI: https://doi.org/10.1007/BF03166929

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