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Contrast anomaly of planar defects in synchrotron white-beam topography of Fe-doped KTa1−xNbxO3

 

作者: Z.W. Hu,   S.S. Jiang,   X.R. Huang,   D. Feng,   J.Y. Zhao,   J.H. Jiang,   Y.L. Ting,   Y. Han,   J.Y. Wang,  

 

期刊: Philosophical Magazine Letters  （Taylor Available online 1992）
卷期: Volume 66, issue 5  

页码: 265-269

 

ISSN:0950-0839

 

年代: 1992

 

DOI:10.1080/09500839208219043

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

The contrast anomaly of a set of planar defects in Fe-doped KTa1−xNbxO3with a Curie point near room temperature has been studied by synchrotron white-beam X-ray topography. A striking wavelength-dependent characteristic of the defect contrast is shown by tuning the synchrotron radiation, and the contrast reversal of the planar defects is displayed in antiparallel reflections. The intense anomaly in contrast is interpreted in terms of anomalous dispersion associated with antiparallel domains.

 

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