郑东兴

郑东兴 教师名称：郑东兴 教师拼音名称：Zheng Dongxing 出生日期：1989-10-12 性别：男 职称：讲师 其他联系方式 邮编：300350 基本信息 研究方向 获奖情况 论文成果 The subject of my research is Magnetoelectric coupling effect in all oxide Ferromagnetic/Multiferroic heterostructures. Our purpose is to achieve the repeatable modulation of magnetic properties by electric field in ferromagnetic/multiferroic heterostructures. On this purpose, there are six works have been done until now. The first is about the anomalous thickness-dependent exchange bias effect in Fe3O4/YMnO3 multiferroic heterostructures. As the exchange bias has brought unidirectional anisotropy to the heterostructures, we are interested about how did the exchange bias affect the anisotropic magnetoresistance of the heterstructures. However, it is a pity that the Fe3O4 changes to an insulator when the temperature is below the Verwey transition temperature. So we just studied the exchange bias effect modulated anisotropic magnetoresistance in Fe/YMnO3 multiferroic bilayers. As a typical multiferroic, the stable state of YMnO3 is in hexagonal (h) structure, while the manetoelectric coupling in h-YMnO3 is not very strong as the ferromagnetic and ferroelectric properties are nonhomologous. So we prepared the metastable YMnO3 with orthorhombic (o) by strain engineering. The o-YMnO3 with distorted perovskite structure is friendly to most perovskite manganite, this will benefit the study of the interfacial coupling in the bilayers. We fabricated the o-YMnO3 and La0.6Sr0.4MnO3 heterostructures by radio-frequency and facing-target magnetron sputtering. We found that the interfacial coupling is strongly depend on the crystal orientation and the strain we bring to the heterostructures. Self-assemble low dimensional materials 暂无内容 暂无内容 教育经历 2011.9-2016.6 Tianjin University   Materials physics and chemistry   Doctoral Degree 2011.9-2016.6 Tianjin University   Materials physics and Chemistry   Master Degree 2007.9-2011.7 Tianjin University   Department of physics   Bachelor