用机械合金化(MA)锻压方法制备了bcc和fcc结构的块状亚稳态Fe-Cu固溶体系统,并对系统的磁化强度、价电子结构进行了测量和计算,从亚稳态Fe-Cu固溶体的饱和磁化强度Ms-e/a(电子/原子)曲线可看出:大约在26.2e/a的区域Ms有最大值,并且在大约28.6e/a的区域接近零.这个结果与Fe-Co和Fe-Ni系统类似(在大约26.2e/a的区域Ms最大,在大约28.6e/a时Ms近似为零).由此我们推论:相对在0K亚稳态Fe-Cu固溶体的每原子的电子数字的饱和磁矩(Ms)曲线与其它二元过渡金属(Fe-Co和Fe-Ni)的曲线类似.在Cu含量大约为35mol%(此时平均电子结构为27.1e/a)时的混合相区域出现负的曲率.
参考文献
[1] | Dederichs P H;Zeller R et al.Ab-initio calculations of the electronic structure of impurities and alloys of ferromagnetic transition metals[J].Journal of Magnetism and Magnetic Materials,1991,100:241. |
[2] | Kneller E F .Magnetic and Structural Properties of Metastable FeCu Solid Solutions[J].Journal of Applied Physiology,1964,35:2210. |
[3] | Chien C L;Liou S H et al.Magnetic properties of FexCu100-x solid solutions[J].Physical Review,1986,B33:3247. |
[4] | Huang L T;Liu B X .Spontaneous vitrification in an immiscible Fe - Cu system[J].Applied Physics Letters,1990,57:1401. |
[5] | Yaravi A R;Desre P J;Benameur T .Mechanically driven alloying of immiscible elements[J].Physical Review Letters,1992,68:2235. |
[6] | Yavari A R .[J].Physical Review Letters,1993,70:3521. |
[7] | Eckert J;Holzer J C;Johonson W L .Magnetic and Structural Properties of Metastable Fe - Cu Solid Solutions[J].Journal of Applied Physiology,1993,73:131. |
[8] | Ma E;Atzmon M;Pinkerton F E .Thermodynamic and magnetic properties of metastable FexCu100-x solid solutions formed by mechanical alloying[J].Journal of Applied Physics,1993,74:955. |
[9] | Crespo P;Hernaneo A et al.Magnetic behavior of metastable fcc Fe- Cu after thermal treatments[J].Physical Review,1993,B48:7134. |
[10] | Sumiyama K;Yoshitake J;Nakmura Y .[J].Journal of the Physical Society of Japan,1984,53:3150. |
[11] | Huang X S;Mashimo T .[J].Journal of Alloys and Compounds,1999,288:299. |
[12] | Danan H;Herr A;Meyer A J P .[J].Journal of Applied Physics,1968,39:669. |
[13] | 张瑞林.固体与分子经验电子理论[M].长春:吉林科学技术出版社,1993 |
[14] | Crespo P;Barro M J et al.Magnetic properties of FexCu1-x solid solutions[J].Journal of Magnetism and Magnetic Materials,1980,85:140-144. |
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