Structural studies of iron selenides prepared by mechanical alloying

被引：54

作者：

Campos, CEM

de Lima, JC

Grandi, TA

Machado, KD

Pizani, PS

机构：

[1] Univ Fed Santa Catarina, Dept Phys, BR-88040900 Florianopolis, SC, Brazil

[2] Univ Fed Sao Carlos, Dept Fis, BR-13565905 Sao Carlos, SP, Brazil

来源：

SOLID STATE COMMUNICATIONS | 2002年 / 123卷 / 3-4期

关键词：

nanostructures; chemical synthesis; crystal structure and symmetry; X-ray scattering; inelastic scattering;

D O I：

10.1016/S0038-1098(02)00232-6

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The structural evolution of a binary alloy with nominal composition Fe25Se75 prepared by ball milling was investigated as a function of milling time. The X-ray diffraction (XRD) patterns showed that for milling times up to 20 h, the FeSe2, phase is formed and excess selenium remains in the amorphous state. For milling times between 40 and 52 h, FeSe2. is partially transformed to beta-FeSe and/or Fe7Se8. The structural evolution of the mixture with milling time was followed using the XRD, differential scanning calorimetry and Raman spectroscopy techniques. (C) 2002 Elsevier Science Ltd. All rights reserved.

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收藏

页码：179 / 184

页数：6

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