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Journal Article

Nonlinear pressure dependence of TN in almost multiferroic EuTiO3

MPS-Authors
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Kremer,  R. K.
Former Scientific Facilities, Max Planck Institute for Solid State Research, Max Planck Society;

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

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Citation

Guguchia, Z., Caslin, K., Kremer, R. K., Keller, H., Shengelaya, A., Maisuradze, A., et al. (2013). Nonlinear pressure dependence of TN in almost multiferroic EuTiO3. Journal of Physics: Condensed Matter, 25(37): 376002.


Cite as: https://hdl.handle.net/21.11116/0000-000E-C667-F
Abstract
The antiferromagnetic (AFM) phase transition temperature T-N of EuTiO3 has been studied as a function of pressure p. The data reveal a nonlinear dependence of T-N on p with T-N increasing with increasing pressure. The exchange interactions exhibit an analogous dependence on p as T-N (if the absolute value of the nearest neighbor interaction is considered) and there is evidence that the AFM transition is robust with increasing pressure. The corresponding Weiss temperature Theta(W) remains anomalous since it always exhibits positive values. The data are analyzed within the Bloch power law model and provide excellent agreement with experiment.