石墨烯/二硫化钼/钴复合材料的结构和磁性  

Microstructure and magnetic properties of RGO/MoS_2/Co composites

作　　者：徐一帆 赵婧羽 叶双莉[1] XU Yi-fan;ZHAO Jing-yu;YE Shuang-li(School of Printing and Packaging,Wuhan University,Wuhan 430079,China;PLA 699 Factory,Beijing 100039,China)

机构地区：[1]武汉大学印刷与包装系,湖北武汉430079 [2]驻699厂军事代表处,北京100039

出　　处：《现代化工》2018年第11期127-131,共5页Modern Chemical Industry

基　　金：国家自然科学基金(51371129)

摘　　要：介绍了两步水热反应制备石墨烯/二硫化钼/钴(RGO/MoS_2/Co)复合物的方法,在保护气体Ar气中通过800℃退火提高Co的纯度。为了探究RGO/MoS_2/Co复合物在柔性自旋器件方面的应用,利用X射线衍射、透射电镜、拉曼等技术对RGO/MoS_2/Co的结构和形貌进行表征,并结合磁性测试(VSM)探讨其微观结构和磁性行为。结果发现,大小约10~20 nm钴粒子成功嵌入到网状交联的RGO/MoS_2中,复合物在低温和常温下均表现出铁磁性,使其有望应用于设计的柔性自旋器件中。RGO/MoS2/Co nanocomposites are fabricated through a facile two-step hydrothermal process and annealed in Ar at 800℃ to improve the purity of Co. The microstructure and magnetic properties of RGO/MoS2/Co nanocomposites are investigated by means of VSM and the structure and morphology of the nanocomposites are analyzed by X-ray diffraction（XRD）,high-resolution transmission electron microscopy（HRTEM） and Raman spectra（RAMAN）.These results display that Co nanoparticles with a size of 10-20 nm are trapped in the network of the crumpled RGO/MoS2.Magnetization measurements demonstrate that RGO/MoS2/Co shows ferromagnetic property,which supplies possibility that it can be used in the flexible spintronic devices designed.

关 键 词：石墨烯/二硫化钼/钴 纳米复合物 水热法 磁性 

分 类 号：O06[理学]