Magnetoelectric mutual-control in collinear antiferromagnetic NdCrTiO5

作者：Li, Xiang; Liu, Meifeng^*; Wang, Yu; Tian, Liman; Shi, Rui; Yang, Lun; Pan, Qiyun; Han, Juanjuan; Xie, Bo; Zhao, Nian; Wang, Xiuzhang; Li, Shaozhen; Lin, Lin; Yan, Zhibo; Liu, Jun-Ming

来源：Applied Physics Letters, 2018, 113(12): 122903.

DOI：10.1063/1.5047077

• NEUTRON

Strong magnetoelectric (ME) coupling has been one of the dreaming goals in magnetoelectric and multiferroic materials. In particular, the electro-control of magnetic ordering and magnetization is of high interest. In this work, we synthesize NdCrTiO5 and perform a set of characterization studies on the multiferroic properties and the linear ME effect. It is revealed that NdCrTiO5 exhibits a magnetic phase transition at T-N similar to 20K, below which a remarkable ME response is observed. On one hand, it is non-ferroelectric at zero magnetic field and a magnetic field as low as 1.0 T is sufficient to induce remarkable pyroelectric current below T-N, demonstrating the magnetism-induced ferroelectricity. On the other hand, the remarkable magnetic control of electric polarization and electro-control of magnetization are recorded. At 10K, a magnetic field of 1.0 T can lead to a change in polarization as large as 20%. Moreover, magnetization M can be significantly modulated by an electric field, with the estimated inverse ME coefficient as large as -1.84 ps/m. The temporal evolution of electrical polarization and magnetization indicates the stable ME mutual control, suggesting potential applications of NdCrTiO5 as a promising multiferroic. Published by AIP Publishing.

• 出版日期2018-9-17
• 单位湖北师范大学; 湖北理工学院; 南京大学