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Magnetostriction of Hexagonal HoMnO3 and YMnO3 Single Crystals

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Nikitin,  S. E.
Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Pavlovskii, N. S., Dubrovskii, A. A., Nikitin, S. E., Semenov, S. V., Terent'ev, K. Y., & Shaikhutdinov, K. A. (2018). Magnetostriction of Hexagonal HoMnO3 and YMnO3 Single Crystals. Physics of the Solid State, 60(3), 520-526. doi:10.1134/S1063783418030228.


Cite as: http://hdl.handle.net/21.11116/0000-0001-225D-1
Abstract
We report on the magnetostriction of hexagonal HoMnO3 and YMnO3 single crystals in a wide range of applied magnetic fields (up to H = 14 T) at all possible combinations of the mutual orientations of magnetic field H and magnetostriction Delta L/L. The measured Delta L/L(H, T) data agree well with the magnetic phase diagram of the HoMnO3 single crystal reported previously by other authors. It is shown that the nonmonotonic behavior of magnetostriction of the HoMnO3 crystal is caused by the Ho3+ ion; the magnetic moment of the Mn3+ ion parallel to the hexagonal crystal axis. The anomalies established from the magnetostriction measurements of HoMnO3 are consistent with the phase diagram of these compounds. For the isostructural YMnO3 single crystal with a nonmagnetic rare-earth ion, the Delta L/L(H, T) dependences are described well by a conventional quadratic law in a wide temperature range (4-100 K). In addition, the magnetostriction effect is qualitatively estimated with regard to the effect of the crystal electric field on the holmium ion.