CAJ | 학술논문

采用溶胶—凝胶法及在氢气中还原的工艺得到面心立方结构的Fe0.1Co0.9/Al2O3纳米复合粉末,利用X射线衍射、透射电子显微镜、振动样品磁强计对样品微观结构和磁性进行了研究.结果表明FeCo合金以面心立方结构存在于纳米复合材料中.由于Co的掺入,FeCo合金的晶粒尺寸下降而晶格常数增大.另外,由于磁矩和晶粒尺寸的变化导致FeCo合金的饱和磁化强度下降而矫顽力增加.
채용용효—응효법급재경기중환원적공예득도면심립방결구적Fe0.1Co0.9/Al2O3납미복합분말,이용X사선연사、투사전자현미경、진동양품자강계대양품미관결구화자성진행료연구.결과표명FeCo합금이면심립방결구존재우납미복합재료중.유우Co적참입,FeCo합금적정립척촌하강이정격상수증대.령외,유우자구화정립척촌적변화도치FeCo합금적포화자화강도하강이교완력증가.
Fe0.1Co0.9/Al2O3 nanocomposite was synthesized using a sol-gel technique combined with H2 reduction method.The samples were characterized by X-ray diffraction,transmission electron microscopy and vibrating sample magnetometer.Results show that FeCo alloys in the nanocomposite present FCC structure.Due to the introduction of Co,FeCo alloys decrease in the grain size but increase in the lattice constant.Furthermore,FeCo alloys decrease in the saturation magnetization and increase in the coercivity resulting from the variety in the magnetic moment and grain size.