摘要
对比研究了AlNiCo5和AlNiCo9两种磁体的显微结构和磁性能。结果表明:常温下,AlNiCo5磁体易磁化方向的剩磁明显高于AlNiCo9,但矫顽力和最大磁能积较低,AlNiCo9的矫顽力为125.34 kA/m,最大磁能积为77.99 kJ/m^3。利用XRD研究AlNiCo5和AlNiCo9磁体的相结构,发现两者均存在强磁性α_1相和弱磁性α_2相,且均为体心立方结构。利用透射电子显微镜观察发现AlNiCo9磁体中的α_1相均匀分布在α_2相中,且两个α_1相之间Cu、Ni的聚集起到了桥梁的作用。利用磁力显微镜观察两种磁体的磁畴形貌,发现AlNiCo9的磁畴呈现球形的迷宫状,AlNiCo5呈现为长条状。
The microstructure and magnetic properties of AlNiCo5and AlNiCo9magnets were investigated.The results show that the remanence of AlNiCo5in magnetization direction is obviously higher than that of AlNiCo9at room temperature,but coercivity(Hcj)and maximum energy product(BH)max are more lower.The Hcj and(BH)max of AlNiCo9are125.34kA/m and77.99kJ/m3,respectively.By means of XRD analysis,it can be seen that AlNiCo5and AlNiCo9magnets have strong magneticα1phase and weak magneticα2phase,which both possess body-centered cubic structure.It is found that theα1phase in AlNiCo9magnet is evenly distributed onα2phase matrix by transmission electron microscopy(TEM).Moreover,Cu and Ni elements are enriched between twoα1phases as a bridge.The magnetic domain morphology of the two magnets is observed by magnetic force microscope,and the domains of AlNiCo9and AlNiCo5shows a spherical labyrinth and long strips,respectively.
作者
银学国
马毅龙
郑强
李兵兵
邵斌
张亚文
YIN Xueguo;MA Yilong;ZHENG Qiang;LI Bingbing;SHAO Bin;ZHANG Yawen(College of Metallurgy and Materials Engineering, Chongqing University of Science and Technology, Chongqing401331, China)
出处
《电子元件与材料》
CAS
CSCD
北大核心
2018年第3期38-43,共6页
Electronic Components And Materials
基金
重庆市教委科技项目(KJ1709202)
重庆市高校创新团队资助项目(CXTDX201601032)
重庆科技学院科研基金资助项目(CK2015Z12)
重庆科技学院研究生科技创新资助项目(YKJCX1620209
YKJCX1620205
YKJCX1620216)
重庆市基础与前沿研究计划项目(CSTC2106JCYJA0232)
