金属学报  1984, Vol. 20 Issue (4): 333-339

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非晶态(Fe_(1-x)Co_x)_(78)Si_(9.5)B_(12.5)合金的磁性和M()ssbauer谱的研究

郭慧群;沈保根;俞伯良;詹文山;潘孝硕

中国科学院物理研究所;中国科学院物理研究所;中国科学院物理研究所;中国科学院物理研究所;中国科学院物理研究所

MAGNETIC PROPERTIES AND M()SSBAUER SPECTRA OF AMORPHOUS (Fe_(1-x)Co_x)_(78)Si_(9.5)B_(12.5) ALLOYS

GUO Huiqun; SHEN Baogen; YU Boliang; ZHAN Wenshan; PAN Xiaoshuo (Institute of physics; Academia Sinica; Beijing) (Manuscript received 15 July; 1983)

郭慧群;沈保根;俞伯良;詹文山;潘孝硕. 非晶态(Fe_(1-x)Co_x)_(78)Si_(9.5)B_(12.5)合金的磁性和M()ssbauer谱的研究[J]. 金属学报, 1984, 20(4): 333-339.
, , , , . MAGNETIC PROPERTIES AND M()SSBAUER SPECTRA OF AMORPHOUS (Fe_(1-x)Co_x)_(78)Si_(9.5)B_(12.5) ALLOYS[J]. Acta Metall Sin, 1984, 20(4): 333-339.

摘要 参考文献 相关文章 Metrics 全文: PDF(551 KB)   摘要: 本文研究了非晶态(Fe_(1-x)Co_x)_(78)Si_(9.5)B_(12.5)合金的饱和磁化强度与温度的关系以及室温下的M()ssbauer谱。得到每个过渡金属原子的磁矩从x=0时的2.1μ_B下降到x=1.0时1.2μ_B。Curie温度T_C与成分的关系可用分子场近似来描述。平均超精细场从x=0时的250kOe增加到x=0.7时的278.5kOe,然后在x=0.9时下降到262kOe。假定每个Co原子的磁矩不随成分而变化(1.2μ_B),得出每个Fe原子的磁矩μ_(Fe)随x的增加而增加并逐渐趋近饱和值2.6μ_B(x=0.9)。平均超精细场(h)_f和平均磁矩(■)可表示为:(h)_f/(■)=h_0+h_1μ_(Fe)/(■),用最小二乘法得到系数h_0和h_1的数值分别为42.5kOe和80kOe。从M()ssbauer谱得到该非晶态合金系列的磁化强度与带面夹角随Co含量的增加而减小,表明了应力-磁致伸缩各向异性能随x增加而减小的变化规律。 Abstract：Thermomagnetic measurements of the amorphous (Fe_(1-x)Co_x)_(78)Si_(9.5)B_(12.5) alloys were made on a magnetic balance in the temperature range from 77 to 1200K under the external field 12 kOe. Conventional Fe~(57) M()ssbauer spectroscopy in a transmission geometry was employed at room temperature. It was found that the average moment per magnetic atom in units of the Bohr magneton decreased from 2.1μ_B for Fe_(78)Si_(9.5)B_(12.5) alloy to 1.2μ_B for Co_(78)Si_(9.5)B_(12.5) with increasing Co content. The variation of T_C with transition metal content for a fixed metalloid composition may be described by the moecular field model. The average hyperfine field at Fe nucleus with increasing Co content of x up to 0.7 first increased from 250 to 278.5 kOe, and then decreased to 262 kOe for x=0.9. Assuming the magnetic moment μ_(Co) per Co atom is independent of content, it was obtained that the magnetic moment μ_(Fe) per Fe atom increased with increasing Co content and gradually approaches to the saturation value, which is 2.6μ_B for x=0.9. The relation between the average hyperfine field (■)_f and the average moment (■) per magnetic atom fol lows equation of (■)_f/(■)=h_0+h_1μ_(Fe)/(■). The values of h_0=42.5kOe and h_1=80kOe were given using the least squares method. It was obtained from M(■)ssbauer spectrum that the angle of magnetization with respect to the plane of the ribbon decreased with increasing Co content, showing the stress-anisotropy energy decreased with increasing Co content. 收稿日期: 1984-04-18      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 郭慧群 沈保根 俞伯良 詹文山 潘孝硕 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1984/V20/I4/333 1 Graham, C. D.; Egami, T., Ann. Rev. Mater. Sci., 8 (1978) , 423． 2 Fujimori, H.; Morita, H.; Obi, Y.; Ohta, S., Amorphous Magnetism Ⅱ, Proc. of the 2nd Int. Symposium on Amorphous Magnetism, Eds. Levy, R. A.; Hasegawa, R., Plenum Press, New York, 1977, p. 393． 3 Mitita, G.; Hatsuo, T.; Toshikiko, T., Jpn. J. Appl. Phys., 17 (1978) , 1877． 4 Luborsky, F. E., Ferromagnetic Materials, Eds. Wohlfarth, E. P., Plenum Press, North-Holland, 1980, p. 504． 5 O'Handley, R. C.; Hasegawa, R.; Ray, R.; Chou, C.-P, Appl. Phys. Lett., 29 (1976) , 330． 6 Dey, S.; Deppe, P.; Rosenbery, M.; Luborsky, F. E.; Walter, J. L., J. Appl. Phys., 52 (1981) , 1805． 7 Collins, M. F.; Forsyth, J. B., Philos. Mag., 8 (1963) , 401． 8 Jagielinski, T.; Walecki, T.; Arai, K. I.; Tsuya, N., J. Magn. Magn. Mater., 15-18 (1980) , №3, 1415． 9 Kronmueller, H.; Faehnle, M.; Domann, M.; Grimm, H.; Grimm, R.; Groeger, B., J. Magn. Magn. Mater., 13 (1979) , 53． No related articles found! Viewed Full text Abstract Cited   Shared      Discussed