CAJ | 학술논문

利用溶胶-凝胶法制备CoPt, CoPt-Au纳米颗粒.并对制备的样品( CoPt, CoPt-Au纳米颗粒)的结构、形貌以及磁学性能进行了表征. X 射线衍射(XRD)结果表明,700°C时,CoPt, CoPt-Au纳米颗粒均为面心四方结构(FCT)的L10 相.透射电子显微镜( TEM)结果表明,CoPt较CoPt-Au的颗粒尺寸小,说明了Au掺杂可能促进了CoPt纳米颗粒的尺寸生长.振动样品磁强计( VSM)结果显示,CoPt-Au较CoPt的矫顽力大,说明一定量的Au元素掺杂可以促进CoPt纳米颗粒磁性的增长.
이용용효-응효법제비CoPt, CoPt-Au납미과립.병대제비적양품( CoPt, CoPt-Au납미과립)적결구、형모이급자학성능진행료표정. X 사선연사(XRD)결과표명,700°C시,CoPt, CoPt-Au납미과립균위면심사방결구(FCT)적L10 상.투사전자현미경( TEM)결과표명,CoPt교CoPt-Au적과립척촌소,설명료Au참잡가능촉진료CoPt납미과립적척촌생장.진동양품자강계( VSM)결과현시,CoPt-Au교CoPt적교완력대,설명일정량적Au원소참잡가이촉진CoPt납미과립자성적증장.
CoPt and CoPt-Au nanoparticles are fabricated by Sol-gel method. Structure,morphology and magnetic properties of CoPt,CoPt-Au were characterized. X-ray diffraction ( XRD) results show that CoPt,CoPt-Au were faced centered tetragonal structure( FCT) at 700℃. Transmission electron microscopy ( TEM) results indicate that the CoPt-Au nano-particle has the larger size than CoPt. It means that Au could promote the growth of CoPt nanoparticles. The result of vibrating sample magnetometer ( VSM) indicates that the pure CoPt nanoparticles has the smaller coercivity than CoPt-Au nanoparticles. It indicates that the addition of Au could improve the magnetism of CoPt nanoparticles.