Ferroelastic Phase Transition in KSc(WO₄)₂: EPR of Gd³⁺

W. Zapart Institute of Physics, Czestochowa University of Technology, Al.Armii Krajowej 19, 42-200, Czestochowa, Poland

M. B. Zapart Institute of Physics, Czestochowa University of Technology, Al.Armii Krajowej 19, 42-200, Czestochowa, Poland

P. Reng Institute of Physics, Czestochowa University of Technology, Al.Armii Krajowej 19, 42-200, Czestochowa, Poland

J. Hanuza Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Wroclaw, Poland

M. Maczka Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Wroclaw, Poland

Electron paramagnetic resonance studies of a structural phase transition from the paraelastic trigonal phase to ferroelastic one in KSc(WO₄)₂ is presented. The spin Hamiltonian parameters have been calculated in both phases. Values of critical exponents describing temperature dependence of the separation between outer split EPR lines as well as changes in the orientation of the crystal field z-axis in the ferroelastic phase are reported.

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Paper originally presented at IMF-11, Iguassu Falls, Brazil, September 5–9, 2005

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Ferroelastic Phase Transition in KSc(WO₄)₂: EPR of Gd³⁺

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Ferroelastic Phase Transition in KSc(WO₄)₂: EPR of Gd³⁺