Magnetic Property Study on Multi-Metal Compounds [M&lt;sub&gt;A&lt;/sub&gt;(en)&lt;sub&gt;&lt;i&gt;x&lt;/i&gt;&lt;/sub&gt;]&lt;sub&gt;&lt;i&gt;y&lt;/i&gt;&lt;/sub&gt;[Fe(CN)&lt;sub&gt;6&lt;/sub&gt;]&lt;sub&gt;&lt;i&gt;z&lt;/i&gt;&lt;/sub&gt;·&lt;i&gt;n&lt;/i&gt;H&lt;sub&gt;2&lt;/sub&gt;O(M&lt;sub&gt;A&lt;/sub&gt;=Co&lt;sup&gt;2+&lt;/sup&gt;,Gu&lt;sup&gt;2+&lt;/sup&gt;)

Qing Lin,Rui Jun Wang,Yun He,Hai Fu Huang,Jian Mei Xu

doi:10.4028/www.scientific.net/amm.184-185.1050

Abstract

The cyano-bridged complexes [MA(en)x]y[Fe(CN)6]z·nH2O(MA=Co2+、Gu2+) have been synthesized. In the multi-metal compound [Co(en)3] [Fe(CN)6] ·6.1H2O was prepared. Infrared spectra with stretching vibration CN = 2117.27 cm-1 illustrates that there exists the bridged cyanide on the compound; the Curie temperature Ө is -8.23117 K, indicating the magnetic interaction between the metal ions in the compound is very weak.In the multi-metal compound CuII3[FeIII(CN)6]2·3NH3·6H2O, we shows firstly the coexistence of ferromagnetic order and spin-glass order.The irreversibility in the MFC/MZFC and the relaxation of MZFC suggest that the magnetic system can be visualized as containing a ferromagnetic cluster of spin below Tc, mixed with small spin-glass clusters formed below temperature Tg less than Tc. The observed magnetic properties are explained with a ferromagnetic-spin-glass phase model.

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