Effect of hydrogenation on the magnetic properties of the intermetallic compound Er2Fe14B with single-crystal and nanocrystalline structures |
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| Authors: | E A Tereshina I S Tereshina S A Nikitin G S Burkhanov O D Chistyakov I V Telegina V A Belousova T Palewski H Drulis |
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| Institution: | (1) Moscow State University, Leninskie Gory, Moscow, 119992, Russia;(2) Baĭkov Institute of Metallurgy and Materials Sciences, Russian Academy of Sciences, Leninskiĭ pr. 49, Moscow, 119901, Russia;(3) International Laboratory of Strong Magnetic Fields and Low Temperatures, Wroclaw, Poland;(4) Institute of Low Temperature and Structure Research, Wroclaw, 50-950, Poland |
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| Abstract: | Hydrogenated single crystals Er2Fe14Bh x with different hydrogen contents are grown and their magnetic properties are studied for the first time. It is established that both the Curie temperature and the temperature of the spin-reorientation phase transition increase with an increase in the hydrogen content. In the Er2Fe14B single crystal, the contributions of the rare-earth metal and iron sublattices to the magnetic anisotropy decrease upon hydrogenation. However, their compensation occurs at a temperature higher than that in the initial compound Er2Fe14B due to the enhancement of the Fe-Fe and R-Fe exchange interactions. The effect of hydrogenation on the magnetic characteristics of the Er2Fe14B compound with a nanocrystalline structure is investigated. It is revealed that the hydrogenation leads to an increase in the coercive force and the residual magnetization of these alloys. |
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