Effects of orientation and interaction of grains on coercivity for sintered NdFeB magnets

Science in China, Series A: Mathematics, Physics, Astronomy

Volumn 42, Issue 6, 1999, Pages 653-659

  Gao, Ruwei ^a   Li, Wei ^b   Zhang, Jiancheng ^a   Wu, Liangxue ^a   Yu, Xiaojun ^b  

^a SHANDONG UNIVERSITY   (China)

^b CENTRAL IRON AND STEEL RESEARCH INSTITUTE   (China)

Author keywords

Coercivity; Exchange coupling interaction; Grain alignment; Long range magnetostatic interaction; NdFeB sintermagnets; Starting field theory

Indexed keywords

EID: 0043235589     PISSN: 10069283     EISSN: None     Source Type: Journal    
DOI: 10.1007/bf02880084     Document Type: Article

References (9)

1. Kronmüller, H., Durst, K. D., Sagawa, M., Analysis of the magnetic hardening mechanism in ReFeB permanent magnets, J. Magn. Magn. Mater., 1988, 74: 291.
2. Givord, D., Lu, Q., Rossignol, M. F. et al., Experimental approach to coercivity analysis in hard magnetic materials, J. Magn. Magn. Mater., 1990, 83: 183.
3. 30 permanent magnets, Phys. Rev. B, 1994, 50: 3849.
4. Gao, R. W., Zhou, S. Z., Zhang, D. H. et al., Coercivity and its dependence on orientation magnetic field in NdFeB sintered magnets, J. Appl. Phys., 1995, 78: 1156.
5. Gao, R. W., Zhang, D. H., Li, H. et al., Effects of the degree of grain alignment on the hard magnetic properties in sintered Nd-Fe-B magnets, Appl. Phys. A, 1998, 67: 353.
6. Schrefl, T., Schmidts, H. F., Fidler, J. et al., The role of exchange and dipole coupling at grain boundaries in hard magnetic materials, J. Magn. Magn. Mater., 1993, 124: 251.
7. Kronmüller, H., Fischer, R., Hertel, R. et al., Micromagnetism and the microstructure in nanocrystalline materials, J. Magn. Magn. Mater., 1997, 175: 177.
8. Fukunaga, H., Inoue, H., Effect of intergrain exchange interaction on magnetic properties in isotropic Nd-Fe-B magnets, Jpn. J. Appl. Phys., 1992, 31: 1347.
9. Fidler, J., Schrefl, T., Overview of Nd-Fe-B magnets and coercivity, J. Appl. Phys., 1996, 79: 5029.