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| SHORT-RANGE ORDER STRUCTURES OF Fe-Ge AMORPHOUS THIN FILMS |
| WANG Wencai;CHEN Yu Department of Physics; Peking University |
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Cite this article:
WANG Wencai;CHEN Yu Department of Physics; Peking University. SHORT-RANGE ORDER STRUCTURES OF Fe-Ge AMORPHOUS THIN FILMS. Acta Metall Sin, 1989, 25(1): 111-116.
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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.
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Received: 18 January 1989
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