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arXiv · 1110.2922

Tuning the structural instability of SrTiO_3 by Eu doping: The phase diagram of Sr_1-xEu_xTiO_3

Z. Guguchia·A. Shengelaya·H. Keller·J. Köhler·A. Bussmann-Holder
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Abstract

The phase diagram of Sr_1-xEu_xTiO_3 is determined experimentally by electron paramagnetic resonance and resistivity measurements and analyzed theoretically within the self-consistent phonon approximation as a function of x ([0.03-1.0]). The transition temperature of the structural instability of the system increases nonlinearly to higher temperatures with increasing x. This is interpreted theoretically by a substantial alteration in the dynamics caused by a change in the double-well potential from broad and shallow to narrow and deep.

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Z. Guguchia, A. Shengelaya, H. Keller, J. Köhler, A. Bussmann-Holder. 2013-01-25. Tuning the structural instability of SrTiO_3 by Eu doping: The phase diagram of Sr_1-xEu_xTiO_3. https://doi.org/10.1103/physrevb.85.134113

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