Pressure-induced transition in the multiferroic CoC r2 O4 spinel

Efthimiopoulos Ilias; Liu Zhi T.Y.; Khare Sanjay V.; Sarin Pankaj; Lochbiler Thomas A.; Tsurkan Vladimir; Loidl Alois; Popov Dimitriy Yu.; Wang Yuejian

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EFTHIMIOPOULOS, Ilias, LIU, Zhi T.Y., KHARE, Sanjay V., SARIN, Pankaj, LOCHBILER, Thomas A., TSURKAN, Vladimir, LOIDL, Alois, POPOV, Dimitriy Yu., WANG, Yuejian. Pressure-induced transition in the multiferroic CoC r2 O4 spinel. In: Physical Review B - Condensed Matter and Materials Physics, 2015, vol. 92, nr. 6, p. 0. ISSN 1098-0121. DOI: https://doi.org/10.1103/PhysRevB.92.064108

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Physical Review B - Condensed Matter and Materials Physics

Volumul 92, Numărul 6 / 2015 / ISSN 1098-0121 /ISSNe 1550-235X

Pressure-induced transition in the multiferroic CoC r2 O4 spinel

DOI:https://doi.org/10.1103/PhysRevB.92.064108

Pag. 0-0

Efthimiopoulos Ilias¹, Liu Zhi T.Y.², Khare Sanjay V.², Sarin Pankaj³, Lochbiler Thomas A.¹, Tsurkan Vladimir⁴⁵, Loidl Alois⁴, Popov Dimitriy Yu.⁶, Wang Yuejian¹

¹ Oakland University, Rochester,
² University of Toledo,
³ Oklahoma State University,
⁴ Center for Electronic Correlations and Magnetism, University of Augsburg,
⁵ Institute of Applied Physics, Academy of Sciences of Moldova,
⁶ Carnegie Institution of Washington

Disponibil în IBN: 19 mai 2023

Rezumat

We have explored the high-pressure structural, vibrational, electronic, and magnetic behavior of the multiferroic CoCr2O4 spinel up to 30 GPa by means of x-ray diffraction, Raman spectroscopy, and density functional theory calculations. Our investigations revealed a reversible tetragonal distortion of the starting cubic structure above 16 GPa. We suggest that the structural modification is mainly driven by magnetic effects induced under pressure. The results obtained are compared with the high-pressure behavior of related spinels. © 2015 American Physical Society.