[(C4H9)4P][M(II)Cr(ox)3] M(II) =Mn, Fe, Co, Ni, Cu双金属草酸盐基磁体的合成与表征

Current Research in Chemistry Pub Date : 2009-01-07 DOI:10.3923/CRC.2009.1.7

F. Martak, D. Onggo, Ismunandar, A. Nugroho, N. Mufti, B. Yamin

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引用次数: 5

摘要

制备了混合金属[(C4H9)4P][M(II)Cr(ox)3] M(II) = Mn(1)， Fe(2)， Co(3)， Ni(4)， Cu(5)和ox为草酸盐。x射线粉末衍射图及其Rietveld细化表明，该系列的所有化合物都是等结构和单相的。x射线粉末衍射谱在六边形和P63空间群中索引。在300- 5k温度下，磁化率数据符合居里-魏斯定律，其正常数分别为15,1(1)，13.5(2)，12.7(3)，12.0(4)和11.0 K(5)。摩尔磁化的温度依赖性在Tc = 12 K (1)， 11 (2)， 10 (3)， 8(4)， 7 K(5)时表现为磁相变。在低温下，化合物配合物表现为远距离有序磁性行为。

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SYNTHESIS AND CHARACTERIZATION OF A BIMETALLIC OXALATE BASED MAGNET: [(C4H9)4P][M(II)Cr(ox)3] M(II) =Mn, Fe, Co, Ni, Cu

The mixed-metal [(C4H9)4P][M(II)Cr(ox)3] M(II) = Mn(1), Fe(2), Co(3), Ni(4), Cu(5) and ox is oxalate, has been prepared. X-ray powder diffraction patterns and their Rietveld refinement show that all the compounds along the series are isostructural and siglephased. X-ray powder diffraction profiles are indexed in hexagonal and P63 space group. The magnetic susceptibility data obey Curie-Weiss law in temperature 300-5 K with a positive constans of 15,1 (1), 13.5 (2), 12.7 (3), 12.0 (4) and 11.0 K (5). The temperature dependence of the molar magnetizatior exhibits a magnetic phase transition at Tc = 12 K (1), 11 (2), 10 (3), 8(4), 7 K (5). At low temperature, the compounds complex exhibit long-range ordered magnetic behavior.

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Current Research in Chemistry

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