Synthesis and Magnetic Properties of New Series of One-Dimensional Oxides Ca3Co1+xB1−xO6(B=Ir, Ru)
Synthesis and Magnetic Properties of New Series of One-Dimensional Oxides Ca3Co1+xB1−xO6(B=Ir, Ru)
复制标题
系列新型一维氧化物Ca3Co1+xB1−xO6(B=Ir, Ru)的合成及磁性能
DOI：
10.1006/jssc.1998.7798
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发表时间：
1998
影响因子：
3.3
通讯作者：
K. Kosuge
中科院分区：
文献类型：
--
作者：
H. Kageyama;K. Yoshimura;K. Kosuge
摘要用传统的固相反应合成了具有K4CdCl6型结构的一维化合物Ca3CoBO6(B=Ir，Ru)。Ca3CoIrO6anda=9.1921(3)A，c=10.7784(7)A，Z=6；Ca3CoRuO6：a=9.1811(1)A，c=10.8232(3)A，Z=6。一维链由面共用CoO6八面体和BO6三棱柱交替构成。Ca3CoIrO6的磁化率在30K时突然下降，这表明铁磁链是反铁磁链耦合的。相反，Ca3CoRuO6是一种普通的反铁磁体，Tn=55K。我们还成功地制备了固溶体系列Ca3Co1+xIr1−xO6和Ca3Co1+xRu1−xO6(0≤x≤1)，并研究了它们的磁性。
Abstract New one-dimensional compounds Ca3CoBO6(B=Ir, Ru) with K4CdCl6-type structure have been synthesized by conventional solid state reactions. Both compounds adopt the rhombohedral symmetry with the space groupR 3 c;a=9.1811(1) A,c=10.8232(3) A,Z=6 (hexagonal expression) for Ca3CoIrO6anda=9.1921(3) A,c=10.7784(7) A,Z=6 for Ca3CoRuO6. One-dimensional chains are built by alternating face-shared CoO6octahedra andBO6trigonal prisms. The magnetic susceptibility of Ca3CoIrO6shows an abrupt drop at 30 K, as seen in the case of Sr3NilrO6, suggesting that ferromagnetic chains couple antiferromagnetically. On the contrary, Ca3CoRuO6is an ordinary antiferromagnet withTN=55 K. We have also succeeded in preparing the solid solution series, Ca3Co1+xIr1−xO6and Ca3Co1+xRu1−xO6(0≤x≤1), and magnetic properties of these systems were investigated.