| 外磁场作用下缺陷区的磁畴变化 |
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| 引用本文： | 刘美全,徐章遂,陈鹏,李建增.外磁场作用下缺陷区的磁畴变化[J].河北师范大学学报(自然科学版),2009,33(3). |
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| 作者姓名： | 刘美全 徐章遂 陈鹏 李建增 |
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| 作者单位： | 军械工程学院,电气工程系,河北,石家庄,050003 |
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| 基金项目： | 国家自然科学基金，河北省自然科学基金 |
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| 摘 要： | 运用磁力显微镜观察外磁场作用下缺陷处的微磁场变化,通过分析缺陷附近磁畴的变化特征得出材料中存在缺陷时,缺陷对畴壁形成钉扎,使得缺陷两侧形成反向势垒,阻碍了畴壁运动,在缺陷边缘附近导致磁荷聚集,形成微磁固定结点,由于微磁固定结点内磁化强度的法向分量不连续,缺陷区形成泄漏微磁场,泄漏微磁场的奇异特征包含了缺陷信息,为缺陷微磁生成机理和微磁检测研究提供了理论和实验支撑.
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| 关 键 词： | 缺陷 微磁场 磁畴 磁畴壁 |
Study on the Change of the Magnetic Domain in the Defect Under Applied Magnetic Field |
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| LIU Mei-quan,XU Zhang-sui,CHEN Peng,LI Jian-zeng.Study on the Change of the Magnetic Domain in the Defect Under Applied Magnetic Field[J].Journal of Hebei Normal University,2009,33(3). |
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| Authors: | LIU Mei-quan XU Zhang-sui CHEN Peng LI Jian-zeng |
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| Institution: | Department of Electrical Engineering;Ordnance Engineering College;Hebei Shijiazhuang 050003;China |
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| Abstract: | The change of the magnetism of the defects observed by magnetic force microscope is introduced,the characteristics of the change of magnetic domain near the defects indicate that the defects in the materials pin the magnetic domain walls,reverse potential vallum which prevent the magnetic domain walls from moving was formed in the two side of the defects and magnetic charge collect in the edge of the defects which was called micro-magnetic fixed knots.The discontinuous normal component of the magnetization ... |
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| Keywords: | defect micro-magnetic field magnetic domain magnetic domain wall |
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