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La0．7Ce0．3（Fel-xCox）11．44Si1．56（x=0．04、0．06、0．08）合金的结构与磁热效应
  • ISSN号：1001-9731
  • 期刊名称：《功能材料》
  • 时间：0
  • 分类：O482.6[理学—固体物理;理学—物理]
  • 作者机构：[1]四川大学材料科学与工程学院,四川成都610065
  • 相关基金：国家自然科学基金重点资助项目（50731007）;国家高技术研究发展计划（863计划）资助项目（2007AA032440）
作者： 刘涛[1], 陈云贵[1], 唐永柏[1], 肖素芬[1], 张恩耀[1], 王金伟[1]
关键词： NaZn13型结构, 磁热效应, 相变, NaZn13-type structure, magnetocaloric effect, phase transformation
中文摘要：

通过X射线衍射仪研究了1300℃退火1h后的La0．7Ce0．3（Fel-xCox）11．44Si1．56（x=0．04、0．06、0．08）合金的相结构。采用振动样品磁强计研究了合金的磁性能。结果表明，合金主相具有NaZn13型结构，含有少量α-Fe和LaFeSi杂相；x=0．04、0．06和0．08时，合金的居里温度Tc分别为230．8、261、288．9K，在1．1T的外磁场变化下，等温磁熵变｜ΔSM｜分别为2．44、1．86和1．55J／（kg·K）。

英文摘要：

The structures of Lao.TCe0.3（Fe1-xCox）11.44 Si1.56 alloys which were annealed at 1300℃ for an hour were investigated by X-ray diffraction （XRD）. The magnetic properties of alloys were investigated by vibrating sample magnetometer （VSM）. The results showed that the major phase was of NaZn13-tye structure with a small amount of impurities composed of α-Fe and LaFeSi. The Curie temperatures Tc of alloys were 230.8,261,288.9K for x= 0. 04,0. 06,0.08, respectively. Under the change of 1.1T the maximum values of isothermal magnetic entropy were 2.44,1.86 and 1.55J/（kg·K） for x=0.04,0.06,0.08,respectively.

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期刊信息
  • 《功能材料》
  • 北大核心期刊（2011版）
  • 主管单位:重庆材料研究院
  • 主办单位:重庆材料研究院
  • 主编：黄伯云
  • 地址：重庆北碚区蔡家工业园嘉德大道8号
  • 邮编：400707
  • 邮箱：gnclwb@126.com
  • 电话：023-68264739
  • 国际标准刊号：ISSN：1001-9731
  • 国内统一刊号：ISSN：50-1099/TH
  • 邮发代号:78-6
  • 获奖情况:
  • 2008、2011年连续获中国精品科技期刊,2010获重庆市双十佳期刊
  • 国内外数据库收录:
  • 美国化学文摘（网络版）,荷兰文摘与引文数据库,美国工程索引,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,英国英国皇家化学学会文摘,中国北大核心期刊（2000版）
  • 被引量:30166