Magnetic entropy change and magnetic properties of LaFe_(11.5)Si_(1.5) after controlling the Curie temperature by partial substitution of Mn and hydrogenation 被引量：2

Magnetic entropy change and magnetic properties of LaFe_(11.5)Si_(1.5) after controlling the Curie temperature by partial substitution of Mn and hydrogenation

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摘要 Magnetic properties and magnetic entropy changes of La（Fe_（1-x）Mn_x）_（11.5）Si_（1.5）H_y compounds are investigated. Their Curie temperatures are adjusted to room temperature by partial Mn substitution for Fe and hydrogen absorption in 1-atm（1 atm = 1.01325×10~5Pa） hydrogen gas. Under a field change from 0 T to 2 T, the maximum magnetic entropy change for La（Fe_（0.99）Mn_（0.01））_（11.5）Si_（1.5）H_（1.61）is-11.5 J/kg. The suitable Curie temperature and large value of ？S_m make it an attractive potential candidate for the room temperature magnetic refrigeration application. Magnetic properties and magnetic entropy changes of La（Fe_（1-x）Mn_x）_（11.5）Si_（1.5）H_y compounds are investigated. Their Curie temperatures are adjusted to room temperature by partial Mn substitution for Fe and hydrogen absorption in 1-atm（1 atm = 1.01325×10~5Pa） hydrogen gas. Under a field change from 0 T to 2 T, the maximum magnetic entropy change for La（Fe_（0.99）Mn_（0.01））_（11.5）Si_（1.5）H_（1.61）is-11.5 J/kg. The suitable Curie temperature and large value of ？S_m make it an attractive potential candidate for the room temperature magnetic refrigeration application.

作者傅斌韩洁

机构地区 School of Materials Science and Engineering College of Science

出处《Chinese Physics B》 SCIE EI CAS CSCD 2016年第2期459-462,共4页 中国物理B（英文版）

基金 Projct supported by the Science and Technology Development Fund of Higher Education of Tianjin,China(Grant No.20130301) the Tianjin Research Program of Application Foundation and Advanced Technology,China(Grant No.14JCQNJC4000)

关键词 magnetic refrigeration Curie temperature （Tc） hydrogen absorption magnetocaloric effect（MCE） magnetic refrigeration, Curie temperature （Tc）, hydrogen absorption, magnetocaloric effect（MCE）

分类号 O611.3 [理学—无机化学]

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