Tuning the structural instability of SrTiO3 by Eu doping: The phase diagram of 
Sr1-xEuxTiO3

Guguchia, Z.; Shengelaya, A.; Keller, H.; Köhler, J.; Bussmann-Holder, A.

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Tuning the structural instability of SrTiO₃ by Eu doping: The phase diagram of Sr_1-xEu_xTiO₃

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Köhler, J.
Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;
Department Nanochemistry (Bettina V. Lotsch), Max Planck Institute for Solid State Research, Max Planck Society;

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Bussmann-Holder, A.
Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;
Department Electronic Structure Theory (Ali Alavi), Max Planck Institute for Solid State Research, Max Planck Society;
Department Physical Chemistry of Solids (Joachim Maier), Max Planck Institute for Solid State Research, Max Planck Society;
Department Nanochemistry (Bettina V. Lotsch), Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Guguchia, Z., Shengelaya, A., Keller, H., Köhler, J., & Bussmann-Holder, A. (2012). Tuning the structural instability of SrTiO₃ by Eu doping: The phase diagram of Sr_1-xEu_xTiO₃. Physical Review B, 85(13): 134113.

Cite as: https://hdl.handle.net/21.11116/0000-000E-C375-2

Abstract

The phase diagram of Sr1-xEuxTiO3 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 <= x <= 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.