X-ray multi-beam resonant diffraction analysis of crystal symmetry for layered perovskite YBaCuFeO5

機構典藏 > College of Sciences > Graduate Institute & Department of Physics > Journal Article > Item 987654321/109589

Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/109589

Title:	X-ray multi-beam resonant diffraction analysis of crystal symmetry for layered perovskite YBaCuFeO5
Authors:	Wen-Chung Liu;Yu-Zhan Zheng;Yu-Chieh Chih;Yen-Chung Lai;Yi-Wei Tsai;Yan-Zong Zheng;Chao-Hung Du;Fang-Cheng Chou;Yun-Liang Soo;Shih-Lin Chang
Keywords:	X-ray multiple diffraction;diffraction anomalous fine structure;DAFS;dynamical X-ray diffraction theory;crystal symmetry;YBaCuFeO5
Date:	2016-09-30
Issue Date:	2017-02-24 02:11:59 (UTC+8)
Publisher:	Wiley-Blackwell Publishing Ltd.
Abstract:	The open question of crystal symmetry for YBaCuFeO5, still under debate, is resolved by using diffraction anomalous fine structure and resonant multi-beam X-ray diffraction at the Fe and Cu K edges. The different asymmetric intensity distributions observed at 7, 7.1305 and 8.9945 keV give direct evidence that the space group of YBaCuFeO5 should be P4/mmm with the distance between Cu and apical O atoms longer than that between Fe and O atoms. This approach provides a direct way to resolve detailed structural symmetry which is indeterminate in conventional Bragg diffraction.
Relation:	Journal of Applied Crystallography 49, p.1721-1725
DOI:	10.1107/S1600576716013248
Appears in Collections:	[Graduate Institute & Department of Physics] Journal Article

Files in This Item:

File	Description	Size	Format
index.html		0Kb	HTML	219	View/Open
X-ray multi-beam resonant diffraction analysis of crystal symmetry for layered perovskite YBaCuFeO5.pdf		996Kb	Adobe PDF	1	View/Open