论文标题
对la $ _ {1.5} $ ba $ _ {0.5} $ comno $ _ {6} $的自发交换偏差效果
The spontaneous exchange bias effect on La$_{1.5}$Ba$_{0.5}$CoMnO$_{6}$
论文作者
论文摘要
la $ _ {1.5} $ ba $ _ {0.5} $ comno $ _ {6} $是一种重新输入的群集玻璃材料，即使从零温度下降到低温磁场的低温状态下，也表现出强大的负面交换偏置（EB）效果。在这里，我们通过在几个不同温度和最大施加的磁场（$ h_m $）下进行磁化来彻底研究这种现象。自发EB（SEB）效应在20 K以下观察到，并显示出$ H_M $ = 75 KOE的最大值。当在磁场存在下对系统冷却后测量$ m（h）$曲线时，效果会大大增强。在磁滞周期中，最近提出的模型可以很好地描述此处研究的$ M（H）$曲线的不对称性。
La$_{1.5}$Ba$_{0.5}$CoMnO$_{6}$ is a re-entrant cluster glass material exhibiting a robust negative exchange bias (EB) effect even after being cooled from an unmagnetized state down to low temperature in zero magnetic field. Here we thoroughly investigate this phenomena by performing magnetization as a function of applied field [$M(H)$] measurements at several different temperatures and maximum applied magnetic fields ($H_m$). The spontaneous EB (SEB) effect is observed below 20 K, and shows a maximum value for $H_m$ = 75 kOe. The effect is greatly enhanced when the $M(H)$ curves are measured after the system is cooled in the presence of a magnetic field. The asymmetry of the $M(H)$ curves here investigated can be well described by a recently proposed model based on the unconventional relaxation of the SG-like moments during the hysteresis cycle.
