Syntheses, Structures, and Theoretical Studies of New Ternary Antimonides β-RECoSb3 (RE = La-Nd, Sm)

被引：10

作者：

Cai, Wei-Zhao ^{[1
,2
]}

Wu, Li-Ming ^{[1
]}

Li, Long-Hua ^{[1
,2
]}

Chen, Ling ^{[1
,3
]}

机构：

[1] Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Fujian, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

[3] Xiamen Univ, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China

来源：

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY | 2009年 / 02期

基金：

中国国家自然科学基金;

关键词：

Transition metals; Rare earth metal compounds; Cobalt; Antimon; Electronic structure; Calculations; Tight-bonding linear muffin-tin orbital method; ZINTL-KLEMM CONCEPT; MAGNETIC-PROPERTIES; CRYSTAL-GROWTH; PHYSICAL-PROPERTIES; TRANSPORT-PROPERTIES; LN=LA-ND; GD; PR; CE; DY;

D O I：

10.1002/ejic.200800836

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Five new intermetallic ternary cobalt antimonides beta-RECoSb3 have been prepared by solid state reactions and characterized by single-crystal X-ray diffraction. The title compounds crystallize in beta-RENiSb3-type structure, Pbcm (No.57), Z = 8, with a = 12.985(4)-12.5530(13) angstrom, b = 6.1603(18)-6.1043(4) angstrom, c = 12.166(4)-12,0267(12) angstrom for RE = La, Ce, Pr, Nd, and Sm. Their structures feature the anionic Sb square nets and CoSb6 octahedron layers that are separated by RE 3, cations along the a axis. The structural relationship among parent-type (RECrSb)(3) alpha-type (RENiSb3), and beta-type (RECoSb3) has been presented, The electronic band structure of beta-LaCoSb3 has been calculated with the aid of the tight-bonding linear muffin-tin orbital (TB-LMTO) method and the results suggest that the three types of RETSb3 are metallic in both b and c directions and the electrical conductivities along the a direction are relatively weak. The magnetic calculations indicated that the rare-earth atoms would be the only source for the magnetic properties. Therefore, beta-type Co analogues should be magnetically identical to the corresponding Ni members. ((C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)

引用

页码：230 / 237

页数：8

共 47 条

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