Some structure and magnetic effects of Ga incorporation on α-FeOOH

被引：20

作者：

dos Santos, CA

Horbe, AMC

Barcellos, CMO

da Cunha, JBM

机构：

[1] UFRGS, Inst Fis, BR-91501970 Porto Alegre, RS, Brazil

[2] Fundacao Univ Amazonas, Dept Geociencias, Manaus, Amazonas, Brazil

来源：

SOLID STATE COMMUNICATIONS | 2001年 / 118卷 / 09期

关键词：

chemical synthesis; X-ray scattering; exchange and superexchange; nuclear resonances;

D O I：

10.1016/S0038-1098(01)00147-8

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The effects of Ga incorporation on goethite were investigated by using X-ray diffractometry (XRD), particle-induced X-ray emission (PIXE), susceptibility measurements and Mossbauer spectroscopy (MS). Samples GaxFe1-xOOH were prepared with x = 0.00, 0.01, 0.03, 0.05, 0.10, 0.35 and 0.70. All the samples are single-phase and an accurate observation of the structure refinement procedure makes clear the sample-dependent structural behaviour. A model is proposed in which the main effect of Ga incorporation is to reduce the crystallite dimensions. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：449 / 452

页数：4

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