2003年1月13日
X-Ray and neutron diffraction studies of atomic scale structures of crystalline and amorphous TbFe2Dx
Journal of Alloys and Compounds
- ,
- ,
- ,
- 巻
- 348
- 号
- 1-2
- 開始ページ
- 167
- 終了ページ
- 172
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.1016/S0925-8388(02)00842-3
Both X-ray and neutron diffraction techniques were employed in order to elucidate short-range structures of crystalline (c-)TbFe2D3.8 and amorphous (a-)TbFe2Dx (x = 3.0, 2.0) prepared by deuterium absorption of the C15 Laves phase compound TbFe2. Interatomic distances and coordination numbers were derived from the radial distribution functions, RDF(r)s. The RDF(r)s observed by X-ray diffraction indicated that c-TbFe2D3.8 adopts a rhombohedral structure, but there is a little difference in the arrangement of metal atoms between the original C15 Laves phase c-TbFe2 and the rhombohedral c-TbFe2D3.8. In contrast, our results indicated that there is a large difference in the arrangement of metal atoms between c-TbFe2 and a-TbFe2Dx (x = 3.0, 2.0) and there are clusters of Fe and Tb atoms in a-TbFe2Dx (x = 3.0, 2.0). RDF(r)s observed by the neutron diffraction indicated that the D atoms occupy tetrahedral sites consisting of 2Tb + 2Fe in c-TbFe2D3.8, while they occupy sites consisting of 4Tb, 3Tb + 1Fe and 2Tb + 2Fe in a-TbFe2Dx (x = 3.0, 2.0). © Elsevier Science B.V. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/S0925-8388(02)00842-3
- ISSN : 0925-8388
- CiNii Articles ID : 80015755887
- SCOPUS ID : 0037433927