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Evidence for a new,stress-induced phase transition in KMnF3
Authors:E Strauß  HJ Riederer
Institution:1. Fachbereich Physik, Universität Regensburg, Regensburg, West Germany
Abstract:A new, stress-induced phase of KMnF3 is found in emission, absorption and a.c.-susceptibility measurements. The phase transition is of first order and it occurs under uniaxial stress parallel to the 100] and to the 110] pseudocubic axes at 20.1 and 27 kp/mm2 at 1.7 K. The experimental results are explained by a change in the amount of the tetragonal distortion in the new, stress-induced phase.
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