金属学报  1986, Vol. 22 Issue (3): 71-75

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Nd-Fe-B永磁体的Mssbauer效应研究

钱祥荣;金慧娟;许桂琴;吴良宏;甄毅

上海钢铁研究所;上海钢铁研究所;上海钢铁研究所;上海钢铁研究所;上海钢铁研究所

MOSSBAUER SPECTROSCOPIC STUDY OF Nd-Fe-B PERMANENT MAGNETIC ALLOY

by QIAN Xiangrong; JIN Huijuan; XU Guiqin; WU Lianghong; ZHEN Yi (Shanghai Institute of Iron and Steel Reseaerch)

钱祥荣;金慧娟;许桂琴;吴良宏;甄毅. Nd-Fe-B永磁体的Mssbauer效应研究[J]. 金属学报, 1986, 22(3): 71-75.
, , , , . MOSSBAUER SPECTROSCOPIC STUDY OF Nd-Fe-B PERMANENT MAGNETIC ALLOY[J]. Acta Metall Sin, 1986, 22(3): 71-75.

摘要 参考文献 相关文章 Metrics 全文: PDF(929 KB)   摘要: <正> 本工作试图通过对Nd_2Fe_(14)B相的Mossbauer效应研究,进一步认识四方结构中六个不同Fe位的微观性质,进而得出Fe原子在不同晶位的布居与宏观磁性能间的定性联系。 一、实验 合金是由99.9％Nd,99.99％的电解Fe和硼铁制备的,成分为Nd_xB_yFe_(100-x-y),x=15,16,y=0,4.3,5.3,7,7.4,10.5。由中频真空感应炉熔炼,浇成2kg的铸锭。将合金锭在甲苯中破碎,然后在球磨机中研磨成细粉,过100mesh的筛网,将粉在磁场下预取向,并在与磁场平行的方向上加(0.4—0.7)kPa的压力。在Ar气保护下于 Abstract：The permanent magnets of the nominal composition Nd_xB_yFe(100-x-y) with x=15 or 16 and y=4-10 were investigated by means of Mossbauer effect. The Mossbauer spectra may be resolved into the subspectra corresponding to the different phases. Mossbauer measurements show that the constituent phases of the alloy are varied with its B content. The α-Fe and Nd_2Fe_(17) are observed in the alloy without B; the tetragonal Nd_2Fe_(14)B occurs and Nd_2Fe_(17) disappears in that containing 4 at.-%B; the Nd-rich and B-rich phases in addition to Nd_2Fe_(14)B exist and α-Fe vanishes in that up to 7 at.-%B and the B-rich phase tends to increase predominantly while further increasing the B content. Six subspectra of the tetragonal phase correspond to the six non-equivalent Fe sites. It is pointed Out that j_2 site posseses maximum hyperfine field and also maximum quadruple splitting. The preferential occupation of j_2 site by Fe atoms is critical for establishing the high anisotropy and remanence. 收稿日期: 1986-03-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 钱祥荣 金慧娟 许桂琴 吴良宏 甄毅 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1986/V22/I3/71 1 Herbst, J. F.; Croat, J.J.; Pinkerton, F.E.; Yelon, W.B., Phys. Rev., B 29 (1984) , 4176． No related articles found! Viewed Full text Abstract Cited   Shared      Discussed