Lanthanum gallium manganese antimonide La12Ga3.5Mn0.5Sb23.5

被引:2
作者
Crerar, SJ [1 ]
Morgan, MG [1 ]
Mar, A [1 ]
机构
[1] Univ Alberta, Dept Chem, Edmonton, AB T6G 2G2, Canada
关键词
antimonide; lanthanum; gallium; manganese; crystal structure;
D O I
10.1016/S0022-4596(02)00200-1
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Lanthanum gallium manganese antimonide La12Ga3.5Mn0.5Sb23.5 is the first quaternary rare-earth antimonide containing a p-block metal and a transition metal. It has been synthesized by reaction of the elements and its structure has been determined by single-crystal X-ray diffraction methods (orthorhombic, space group D-2h(25) - Immm, Z = 2, a = 4.3534(11)Angstrom, b = 19.814(5) Angstrom, c = 26.977(7) Angstrom). La12Ga3.5Mn0.5Sb23.5 is a stuffed variant of the RE12Ga4Sb23- type structure: isolated GaSb3 trigonal planes are located within groupings of La-6 trigonal prisms that are surrounded by five- and six-atom wide Sb ribbons, which are connected by Ga-2 pairs, GaSb6 octahedra, or MnSb4 tetrahedra. The electrical resistivity along a is 3.0 x 10(-3) Omega cm at room temperature and shows little temperature dependence. (C) 2003 Elsevier Science (USA). All rights reserved.
引用
收藏
页码:137 / 142
页数:6
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