Yang Xiancheng, Jin Ruliang. A STUDY OF THE DOMAIN STRUCTURE OF (Sm、Gd、Er)Co5 BY THE MAGNETO-OPTICAL KERR EFFECT[J]. Journal of Electronics & Information Technology, 1985, 7(2): 114-120.
Citation:
Yang Xiancheng, Jin Ruliang. A STUDY OF THE DOMAIN STRUCTURE OF (Sm、Gd、Er)Co5 BY THE MAGNETO-OPTICAL KERR EFFECT[J]. Journal of Electronics & Information Technology, 1985, 7(2): 114-120.
Yang Xiancheng, Jin Ruliang. A STUDY OF THE DOMAIN STRUCTURE OF (Sm、Gd、Er)Co5 BY THE MAGNETO-OPTICAL KERR EFFECT[J]. Journal of Electronics & Information Technology, 1985, 7(2): 114-120.
Citation:
Yang Xiancheng, Jin Ruliang. A STUDY OF THE DOMAIN STRUCTURE OF (Sm、Gd、Er)Co5 BY THE MAGNETO-OPTICAL KERR EFFECT[J]. Journal of Electronics & Information Technology, 1985, 7(2): 114-120.
A study of the magnetic domain structure of (Sm, Gd, Er)Co5 magnet by magneto-optical Kerr effect is presented. Two samples with different intrinsic eoercive forces are compared one another in their variations in the domain structure during different stages of magnetization and demagnetization.The results indicate that the coercivity of the magnet made of this kind of magnetic material is mainly controlled by nucleation mechanism. Hence, to improve its magnetic properties, the reversal magnetized nucleation must be restrained. In practise, it can be done by keeping the composition of magnetic materials accurate and homogeneous, increasing the density of the magnet, decreasing the content of impurity and hole, etc.
北京大学物理系《铁磁学》编写组,铁磁学,科学出版社,1976年,第95页.[2]R. Carey and E. D. Isaac, Magnetic Domains and Techniques for Their Observation, the English Universities, 1966, p66. [3] F. A. Jenkins and H. E. White, Fundamentals of Optics, McGraw-Hill Book Company, Inc., 1957, p601.[3]李国栋,国外金属材料,1981年,第9期,第34页.[4]杨应昌,何文望,林勤,稀土钻永磁反磁化机制,冶金部第一届永磁材料经验交流会资料汇编,1979年2月,第8页.
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