Interplay between hydrogenation and pressure effects in magnetism of Lu₂Fe₁₇ single crystal

E. A. Tereshina Institute of Physics, Academy of Sciences, Na Slovance 2, Prague, 18221, Czech Republic; Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, Prague, 12116, Czech RepublicCorrespondence[email protected]

H. Yoshida Institute for Materials Research, Tohoku University, Katahira 2-1-1, Sendai, 980-8578, Japan

A. V. Andreev Institute of Physics, Academy of Sciences, Na Slovance 2, Prague, 18221, Czech Republic

I. S. Tereshina Baikov Institute of Metallurgy and Material Science RAS, 119991, Moscow, Russia

K. Koyama Institute for Materials Research, Tohoku University, Katahira 2-1-1, Sendai, 980-8578, Japan

T. Kanomata Faculty of Engineering, Tohoku Gakuin University, Tagajo, 985-8537, Japan

Abstract

Lu₂Fe₁₇ is a ferromagnet below T _C=140 K and antiferromagnet up to T _N≈ 278 K. Hydrogen absorption leads to a stabilization in the ferromagnetism over the whole range of magnetic order and to an increase of the ordering temperature up to T _C=354 K in Lu₂Fe₁₇H₁. The external pressure compensates the lattice expansion upon hydrogenation, and a re-entrance of antiferromagnetism is observed.

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Acknowledgements

The work has been supported by grants GACR 202/06/0185 (Czech Republic), RFBR no. 05-02-16361 and by Federal Program of Support of Leading Scientific Schools no. NSh-8701.2006.2 (Russia).

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Interplay between hydrogenation and pressure effects in magnetism of Lu₂Fe₁₇ single crystal