Enhancement of the magnetocaloric effect and magnetic transition temperature in LaFe_(11.5)Al_(1.5) by hydrogenation

Zhao J.L.; Shen J.; Shen B.G.Hu F.X.Sun J.R.

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Enhancement of the magnetocaloric effect and magnetic transition temperature in LaFe_(11.5)Al_(1.5) by hydrogenation

机译：Enhancement of the magnetocaloric effect and magnetic transition temperature in LaFe_(11.5)Al_(1.5) by hydrogenation

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Research highlights: Introducing hydrogen atoms to LaFe _(11.5)Al_(1.5)H_x (x=0.12, 0.6 and 1.3) compound can drive the Curie temperature TC to ambient temperature. The magnetic transition is changed from second order to weakly first order with increasing hydrogen content, leading to an increase in the magnetic entropy change ΔSM. The maximal value of ΔSM for x=1.3 is determined to be 6.7 J/kg K at 295 K under a field change of 02 T. Good reversible MCE at low fields makes the hydrides promising room-temperature magnetic refrigerants.

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来源
《Solid State Communications》 |2010年第48期|2329-2332|共4页
作者
Zhao J.L.; Shen J.; Shen B.G.Hu F.X.Sun J.R.;
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作者单位

State Key Laboratory for Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;

Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;

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正文语种英语
中图分类固体物理学;
关键词
A. LaFe_(11.5)Al_(1.5)H_x hydrides; D. Magnetic entropy change; D. Magnetocaloric effect;

Enhancement of the magnetocaloric effect and magnetic transition temperature in LaFe_(11.5)Al_(1.5) by hydrogenation

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