金属学报  1989, Vol. 25 Issue (1): 111-116

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Fe-Ge非晶薄膜的短程序结构

王文采;陈玉

北京大学物理系;王副教授;北京大学

SHORT-RANGE ORDER STRUCTURES OF Fe-Ge AMORPHOUS THIN FILMS

WANG Wencai;CHEN Yu Department of Physics; Peking University

王文采;陈玉. Fe-Ge非晶薄膜的短程序结构[J]. 金属学报, 1989, 25(1): 111-116.
, . SHORT-RANGE ORDER STRUCTURES OF Fe-Ge AMORPHOUS THIN FILMS[J]. Acta Metall Sin, 1989, 25(1): 111-116.

摘要 参考文献 相关文章 Metrics 全文: PDF(541 KB)   摘要: 用X射线K吸收谱方法研究了Fe_xGe_(1-x)(x=8.7,19.1和28.5％)非晶薄膜的短程序结构。三种合金中,Ge或Fe原子的最近邻结构组态均由Ge,Fe分别形成的两个间距很小的双配位层构成。Fe含量较低的前两种合金,Ge的最近邻结构参数与非晶Ge非常相近,Fe作为Ge的最近邻原子接近于无规的代位式配位。当Fe含量达到28.5at.-％时,相应的非晶薄膜的短程序发生了很大的变化;非晶已偏离连续无规网络结构,显示出朝无规密堆结构变化的趋向。同时,还显示出在该合金中Fe-Ge原子间存在较强的相互作用。 关键词 ： 铁—锗非晶薄膜,  X射线短程序结构     Abstract：The short-range order structures of Fe_x Ge_(1-x). amorphous thin films(x=8.7, 19.1, and 28.5%) have been studied by X-ray absorption spectrum. Thenearest neighbors around a Ge or an Fe atom constitute two coordinate sub-shellswith a very short distance. In two films with lower Fe content, structural para-maters of the nearest neighbors around a Ge atom are similar to that in amorphousgermanium and the positions of Fe atoms are randomly substitutional. But whenX=28.5%, some great changes occur on the short-range order structure ofα-Fe_x Ge_(1-x) film: its structure deviates from continuous random network and tendstoward dense random packing of atoms. Meanwhilee, there is stronger interactionbetween near neighboring Fe-Ge atoms in a-Fe_x Ge_(1-x) films. Key words： Fe-Ge amorphous thin film    X-ray short-range order structure 收稿日期: 1989-01-18      基金资助:国家自然科学基金 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 王文采 陈玉 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1989/V25/I1/111 1 Gaskell P H. J Non-Cryst Solids, 1979; 32: 207 2 Wong J, Liebermann H H. Phys Rev, 1984; B29: 651 3 王文采,陈玉.物理学报,1987;36:1033 4 陈玉,王文采.见:黄胜涛等著,《非晶态材料的结构及结构分析》,北京:科学出版社,1987:62 5 Teo B K, Lee P A. J Am Chem Soc, 1979; 101: 2815 6 Etherington G, Wright A C, Wenzel J T, Dore J C, Clarke J H, Sinclair R N. J Non-Cryst Solids, 1982; 48: 265 7 Endoh Y, Yamada K, Beille J, Bloch D, Endo H, Tamura K, Fukushima J, Solid State Commun, 1976; 18: 735 8 Brown M, Peierls R E, Stern E A. Phys Rev, 1977; B15: 738 9 Grunes L A. Phys Rev, 1983; B27: 2111 10 Shulman R G, Yafet Y, Eisenberger P, Blumberg W E. Proc Nat Acad Sci USA, 1976; 73: 1384 11 Hu V W, Chan S I, Brown G S. Proc Nat Acad Sci USA, 1977; 74: 3821 No related articles found! Viewed Full text Abstract Cited   Shared      Discussed