Acta Metall Sin  1998, Vol. 34 Issue (4): 423-430    DOI:

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COMPUTER STUDY OF MAGNETIZATION IN NANOCOMPOSITE MAGNETS

CHU Yelong; XIONG Liangyue; SUN Xiaokai (Institute of Metal Research; The Chinese Academy of Sciences; Shenyang 110015)

CHU Yelong; XIONG Liangyue; SUN Xiaokai (Institute of Metal Research; The Chinese Academy of Sciences; Shenyang 110015). COMPUTER STUDY OF MAGNETIZATION IN NANOCOMPOSITE MAGNETS. Acta Metall Sin, 1998, 34(4): 423-430.

Abstract References Related Articles Recommended Metrics Download:  PDF(805KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The computer simulation of magnetization process of a single powder particle of the Nd2Fe14B/α-Fe nanocomposite magnet has been performed. Three types of hysteresis loops have been observed at different conditions: Stoner-Wohlfarth like type, contracted loop and normal hysteresis loop with a good rectangularity. The behavior of the reduced remanence, the intrinsic coercivity and the change of maximum magnetic energy product with the grain size, a,and the content of the soft phase, fm, have been studied. For the model nanocomposite magnetsof fm=40% and the grain size a=25 nm, the optimum value of (BH)max=375 kJ/m3 is attained.It is remarkably enhanced in comparison with the maximum of (BH.)max=264 kJ/m3 of the pure Nd-Fe-B magnet. Key words:  nanocomposite magnet      exchanged interaction      computer simulation      Received:  18 April 1998      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1998/V34/I4/423 1 McCallum R W, Kadin A M, Clemente G B, Keem J E. J Appl Phys, 1987; 61: 3577 2 Manaf A, Buckley R A, Davies H. J Magn Magn Mater, 1993; 128: 302 3 Kneller E P, Hawig R. IEEE bens Magn, 1992; MAG-27: 3588 4 Skomski R, Coey J M D. Phys Rev, 1993; 48B: 15812 5 Schrefl T, Fidler J, Kronmller H. Phys Rev, 1994; 49B: 6100 6 Liu W, Wang Q, Sun X K, Zhao X G, Zhao T, Zhang Z D, Chuang Y C. J Magn Magu Mater, 1994; 131: 413 7 Yang J L, Wang Q, Sun X K, Zeng G Y, Chen M, Liu W, Zhao X G, Zhso T, Zhang Z D. J Mop Magn Maten 1994; 134: 197 8 Jin Z Q, Sun X K, Liu W, Zhao X G, Xiao Q F, Sui Y C, Zhang Z D, Wang Z G, Qin H X. i Magn Magn Mater, 1997; 169: 135 9 Fukunaga H, Inoue H. 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