Abstract A B-site disordered double perovskite La2CrNiO6 is synthesized by citrate-gel combustion method. The material is showing an orthorhombic Pbnm crystal structure which doesn’t change upon cooling to 15 K and with an applied field of 50 kOe. Upon cooling from room-temperature to 15 K, a nearly linear dependence in the volume of the crystal structure with temperature is observed until 100 K, which is around the ferrimagnetic transition temperature of the material. The disordered Cr and Mn introduced inhomogeneous magnetic interactions, leading to Griffiths-like phase (GP) and spin glass state in the material. The material shows an exchange bias effect, owing to the GP and spin glass state. Mott’s variable range hopping is the conduction mechanism of the insulating disordered double perovskite La2CrNiO6.

中文翻译：

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无序 LaCrNiO6 的亚铁磁性、交换偏置和自旋玻璃特性

摘要 采用柠檬酸盐-凝胶燃烧法合成了B位无序双钙钛矿La2CrNiO6。该材料显示出正交 Pbnm 晶体结构，在冷却至 15 K 和 50 kOe 的外加场时不会发生变化。从室温冷却到 15 K 后，观察到晶体结构的体积与温度几乎呈线性关系，直到 100 K，即材料的亚铁磁转变温度附近。无序的 Cr 和 Mn 引入了不均匀的磁相互作用，导致材料中的类似格里菲斯相 (GP) 和自旋玻璃态。由于 GP 和自旋玻璃态，该材料显示出交换偏置效应。Mott 的可变范围跳跃是绝缘无序双钙钛矿 La2CrNiO6 的导电机制。