Magnetic microstructures of phase-separated Sm–Co 2:17-type sintered magnets
作者： Y.K. Fang , H.W. Chang , Z.H. Guo , T. Liu , X.M. Li
DOI: 10.1016/J.JALLCOM.2007.08.069
关键词: Magnet 、 Magnetic force microscope 、 Condensed matter physics 、 Magnetic domain 、 Materials science 、 Microstructure 、 Coercivity 、 Homogenization (chemistry) 、 Metallurgy 、 Phase (matter) 、 Magnetization
摘要: Magnetic microstructures of high-temperature Sm-Co 2:17-type sintered magnets during phase separation process have been investigated by using magnetic force microscopy. Results show that the final is an aggregation many single domains. The evolution domain structures was explained on basis variation constitutions specimens together with crystalline due to phase-separation process. Homogenization treatment important appearance uniform fine domains, which prerequisite high performance magnets. Moreover, shift Delta phi image can give indication vertical field strength and hence, saturation magnetization (c) 2007 Elsevier B.V. All rights reserved.
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A. Yan, O. Gutfleisch, T. Gemming, K.-H. Müller, Microchemistry and magnetization reversal mechanism in melt-spun 2:17-type Sm-Co magnets Applied Physics Letters. ,vol. 83, pp. 2208- 2210 ,(2003) , 10.1063/1.1611641
N. Plugaru, J. Rubín, J. Bartolomé, Structural and magnetic investigation of Co-rich Sm–Co unidirectionally solidified alloys Journal of Alloys and Compounds. ,vol. 433, pp. 129- 139 ,(2007) , 10.1016/J.JALLCOM.2006.06.038
H Kronmüller, D Goll, Micromagnetic analysis of pinning-hardened nanostructured, nanocrystalline Sm2Co17 based alloys Scripta Materialia. ,vol. 47, pp. 545- 550 ,(2002) , 10.1016/S1359-6462(02)00177-X
Minggang Zhu, Yikun Fang, Yongquan Guo, Wei Li, Baoshan Han, Study of magnetic microstructures of Nd–Fe–B casting strips by using magnetic force microscope Journal of Magnetism and Magnetic Materials. ,vol. 282, pp. 180- 185 ,(2004) , 10.1016/J.JMMM.2004.04.042
Yong Zhang, Michelle Corte-Real, George C. Hadjipanayis, Jinfang Liu, Marlin S. Walmer, Kannan M. Krishnan, Magnetic hardening studies in sintered Sm(Co,Cux,Fe,Zr)z 2:17 high temperature magnets Journal of Applied Physics. ,vol. 87, pp. 6722- 6724 ,(2000) , 10.1063/1.372820
O. Gutfleisch, K.-H. Müller, K. Khlopkov, M. Wolf, A. Yan, R. Schäfer, T. Gemming, L. Schultz, Evolution of magnetic domain structures and coercivity in high-performance SmCo 2:17-type permanent magnets Acta Materialia. ,vol. 54, pp. 997- 1008 ,(2006) , 10.1016/J.ACTAMAT.2005.10.026
Z.H. Guo, W. Pan, W. Li, Sm(Co, Fe, Cu, Zr)z sintered magnets with a maximum operating temperature of 500 °C Journal of Magnetism and Magnetic Materials. ,vol. 303, ,(2006) , 10.1016/J.JMMM.2006.01.107
Jian Zhang, Hui Liu, Chuan-bin Rong, Hong-wei Zhang, Shao-ying Zhang, Bao-gen Shen, Yuan-qiang Bai, Bao-he Li, Anomalous temperature dependence of coercivity in precipitation hardened Pr-Co-Cu-Ti magnets Applied Physics Letters. ,vol. 83, pp. 1172- 1174 ,(2003) , 10.1063/1.1597747
S. Derkaoui, N. Valignat, C.H. Allibert, Phase equilibria at 1150°C in the Co-rich alloys SmCoZr and structure of the 1:7 phase Journal of Alloys and Compounds. ,vol. 232, pp. 296- 301 ,(1996) , 10.1016/0925-8388(95)02003-9
A. Lefèvre, L. Cataldo, M.Th. Cohen-Adad, B.F. Mentzen, A representation of the SmCoZrCuFe quinary system: a tool for optimisation of permanent magnets Journal of Alloys and Compounds. pp. 129- 133 ,(1997) , 10.1016/S0925-8388(97)00368-X