Pressure-mediated structural transitions in bulk EuTiO3

Journal article (2018)

Authors

D. Bessas RST/Fundamental Aspects of Materials and Energy - AS , European Synchrotron Radiation Facility
K. Glazyrin Deutsches Elektronen-Synchrotron DESY
D. S. Ellis RIKEN Center for Emergent Matter Science (CEMS)
I. Kantor European Synchrotron Radiation Facility
D. G. Merkel European Synchrotron Radiation Facility
V. Cerantola European Synchrotron Radiation Facility
V. Potapkin University of Münster
S. Van Smaalen University of Bayreuth
A. Q.R. Baron RIKEN Center for Emergent Matter Science (CEMS)
R. P. Hermann Oak Ridge National Laboratory
Research Group
RST/Fundamental Aspects of Materials and Energy (AS) (TU Delft)
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Published Date

2018

Language

English

Reuse Rights

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Faculty

Applied Sciences

Department

RST/Radiation, Science and Technology

Research Group

RST/Fundamental Aspects of Materials and Energy

Abstract

The high pressure structural phase diagram of EuTiO3 is revisited by means of single crystal x-ray diffraction at pressures below 30GPa. We report a transition at about 3GPa with a surprisingly small lattice distortion. At 23GPa we have detected a yet unknown transition into a new orthorhombic phase (space group Ibam). Combining our observations on structures obtained on single crystals and polycrystalline samples with complementary methods, such as electrical resistivity and nuclear forward scattering of synchrotron radiation measured on polycrystalline samples, we address issues relevant to chemistry and disorder.

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PhysRevB.98.054105.pdf
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