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异金属簇{LnCu3}低温磁制冷性能

李焓 ,  宋芬 ,  师唯 ,  马建功 ,  程鹏

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引用本文: 李焓, 宋芬, 师唯, 马建功, 程鹏. 异金属簇{LnCu3}低温磁制冷性能[J]. 无机化学学报, 2015, 31(9): 1860-1866. doi: 10.11862/CJIC.2015.248 shu
Citation:  LI Han SONG, Fen SHI, Wei MA, CHENG Peng. Cryogenic Magnetic Refrigeration Properties of Heterometallic {LnCu3} Cluster Family[J]. Chinese Journal of Inorganic Chemistry, 2015, 31(9): 1860-1866. doi: 10.11862/CJIC.2015.248 shu

异金属簇{LnCu3}低温磁制冷性能

  • 1.

    南开大学化学学院, 先进能源材料化学教育部重点实验室, 天津化学化工协同创新中心, 天津 300071

    • 通讯作者: 程鹏,E-mail:pcheng@nankai.edu.cn
  • 基金项目:

    国家基金委创新团队(No.21421001) (No.21421001)

    教育部创新团队(IRT13022和13R30) (IRT13022和13R30)

    111引智计划(B12015) (B12015)

    天津市自然科学基金(13JCZDJC32200)资助项目。 (13JCZDJC32200)

摘要: 基于对已报道Gd-Cu配合物的文献调研,发现一类{LnCu3}簇合物(Ln=Gd(1), Tb(2), Dy(3)),其CuII离子被GdIII离子有效分隔且分子内部仅拥有铁磁相互作用,因而对其进行了低温磁制冷性能研究。在已报道实验方法上加以改进,用一锅法制备出一系列异金属{LnCu3}簇合物(Ln=Gd(1), Tb(2), Dy(3)),并运用元素分析、红外、单晶/粉末X-射线衍射等方法对其进行表征,以证明其同构性及相纯度。低温磁热效应的研究结果表明簇合物1-3在ΔH=0~7 T下的最大磁熵变值(-ΔSm)分别为16.1(2 K), 6.9(5 K)和8.1(5 K)J·kg-1·k-1。簇合物1与已报道的Gd-Cu簇合物的磁熵变对比再次证明了弱铁磁相互作用在3d-4f分子磁制冷剂设计中起到重要的作用。

English

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  • 收稿日期:  2015-06-01
  • 网络出版日期:  2015-07-14
通讯作者: 陈斌, bchen63@163.com
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