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Study of the relationship between magnetic field and dielectric properties in two ferromagnetic complexes

机译:两种铁磁配合物的磁场与介电性质之间关系的研究

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By changing metal ions in the existing [guest][MIIIMII(HCOO)6] framework, heterometallic formate frameworks formulated as [NH2(CH3)2][CrIIIFeII(HCOO)6] (1) and [NH2(CH3)2][CrIIINiII(HCOO)6] (2) were synthesized and characterized by single crystal X-ray diffraction, dielectric measurement and magnetic susceptibility measurement. Both complexes 1 and 2 exhibit long-range ferromagnetic ordering (LRO) at Curie temperatures of 15.3 (1) and 20.9 K (2) through ac magnetization susceptibility and zfc/fc measurements. Complex 1 possesses a hysteresis loop with Hc/Mr being 2.77 kOe/2.83 B. Measurements on the dielectric properties of 1 and 2 show an apparent dielectric response. Interestingly, the dielectric constants can be increased under an applied magnetic field.
机译:通过更改现有[guest] [M III M II (HCOO) < sub> 6 ]框架,配制为[NH 2 (CH 3 < / small>) 2 ] [Cr III Fe II < / small>(HCOO) 6 ](1)和[NH 2 (CH 3 2 ] [Cr III Ni II (HCOO) 6 ](2)的合成并通过单晶X射线衍射,介电测量和磁化率测量进行表征。通过交流磁化率和zfc / fc测量,复合物1和2在居里温度15.3(1)和20.9 K(2)时均表现出远距离铁磁有序(LRO)。复合体1具有一个 H c / M r 的磁滞回线为2.77 kOe / 2.83 B 。对1和2的介电性能的测量显示出明显的介电响应。有趣的是,可以在施加磁场的情况下增加介电常数。

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