NBu_4Zn_(0.04)~ⅡFe_(0.96)~Ⅱ[Fe~Ⅲ(ox)_3](NBu_4=N(C_4H_9)_4^+)的磁性研究

Magnetic Properties of NBu_4Zn_(0.04)~ⅡFe_(0.96)~Ⅱ[Fe~Ⅲ(ox)_3](NBu_4=N(C_4H_9)_4^+)

合成了混合金属化合物NBu4Zn0.Ⅱ04F e0.Ⅱ96[F eⅢ(ox)3](NBu4=N(C4H9)4+),对其进行了磁性测量。变温磁化率研究表明:化合物存在亚铁磁性交换相互作用,磁相变温度TC是43.9 K;在外场较小(小于0.1 T)时,发现有一个补偿温度;当温度大于50 K时,磁化率与温度的关系遵循居里-外斯定律。观测到化合物的矫顽场HC的大小是1 T,剩余磁化强度Mr的大小是759.2 cm3.G.m o-l 1。

A mixed-metal compound NBu4ZnⅡ0.04FeⅡ0.96[FeⅢ（ox）3]（NBu4=N（C4H9）4＋）has been synthe- sized,and the magnetic property of the compound was measured. The magnetic susceptibilities indicate that there exists a ferrimagnetic exchange interaction in the compound,and the temperature of the magnetic transition is 43.9 K. A compensation temperature was found with the field being less than 0.1 T. When the temperature is higher than 50 K,the relationship between temperature and susceptibility follows Curie-Weiss law. The observed value of coercive field （Hc） and remanent magnetization （Mr） for the compound were 1 T and 759.2 cm3 · G ·mol-1.