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合成和表征了一个新的分子磁体,氰根桥联的杂化型异金属配合物[Cu(en)]_3[Fe(CN)_6]_2·3H_2O(en为乙二胺).变温磁化率、零场冷却磁化强度(ZFCM)、场冷却磁化强度(FCM)和磁滞回线测量表明铜铁离子间存在着铁磁性相互作用,其铁磁相变温度为T_c=11.0K,矫顽力为20×10~(-4)T,剩磁为1.70×10~(-1)cm~3·mol~(-1)·T.该化合物为杂化型铜(Ⅱ)-铁(Ⅲ)普鲁士蓝类中具有铁磁相变温度的首例.
A novel molecular magnet was synthesized and characterized by the cyanide bridged hybrid heterometallic complex [Cu (en)] _3 [Fe (CN) _6] _2 · 3H_2O (en = ethylenediamine) , Zero field cooling magnetization (ZFCM), field cooling magnetization (FCM) and hysteresis loop measurements show that there is a ferromagnetic interaction between the copper and iron ions, the ferromagnetic phase transition temperature T_c = 11.0K, coercivity And the remanence is 1.70 × 10 ~ (-1) cm ~ 3 · mol ~ (-1) · T for 20 × 10 ~ (-4) T. This compound is a hybrid copper (Ⅱ) Prussian blue with the first phase of the ferromagnetic phase transition temperature.