Zhou Long, Wang Xiao, Liu Zhehong, Ye Xubin, Zhang Jie, Zhao Haoting, Lu Dabiao, Pi Maocai, Pan Zhao, Zhang Xueqiang, Long Youwen
Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
J Phys Condens Matter. 2023 Apr 5;35(25). doi: 10.1088/1361-648X/acc712.
The concurrent presence of large electric polarization and strong magnetoelectric coupling is quite desirable for potential applications of multiferroics. In this paper, we report the growth of CdMnOsingle crystals by flux method under a high pressure of 8 GPa for the first time. An antiferromagnetic (AFM) order with a polar magnetic point group is found to occur at the onset temperature of= 88 K (AFM1 phase). As a consequence, the pyroelectric current emerges atand gradually increases and reaches its maximum at= 63 K, at which the AFM1 phase finally settles down. Below, CdMnOsingle crystal exhibits a large ferroelectric polarization up to 2640C m. Moreover, the spin-induced electric polarization can be readily tuned by applying magnetic fields, giving rise to considerable magnetoelectric coupling effects. Thus, the current CdMnOsingle crystal acts as a rare multiferroic system where both large polarization and strong magnetoelectric coupling merge concurrently.
对于多铁性材料的潜在应用而言，同时存在大的电极化和强的磁电耦合是非常理想的。在本文中，我们首次报道了通过助熔剂法在8 GPa的高压下生长CdMnO单晶。发现在起始温度 = 88 K（AFM1相）时出现具有极性磁点群的反铁磁（AFM）有序。结果，热电流在 出现并逐渐增加，在 = 63 K时达到最大值，此时AFM1相最终稳定下来。在 以下，CdMnO单晶表现出高达2640 C m的大铁电极化。此外，通过施加磁场可以很容易地调节自旋诱导的电极化，从而产生可观的磁电耦合效应。因此，当前的CdMnO单晶充当了一种罕见的多铁性体系，其中大极化和强磁电耦合同时出现。
