Investigation of the defects distribution along the growth direction in GdCOB crystals by synchrotron and conventional X-ray topography

被引：6
作者：
Wierzchowski, W
Wieteska, K
Graeff, W
Wierbicka, E
Lefeld-Sosnowska, M
Klos, A
机构：
[1] Inst Elect Mat Technol, PL-01919 Warsaw, Poland
[2] Inst Atom Energy, PL-05400 Otwock, Swierk, Poland
[3] DESY, HASYLAB, D-22603 Hamburg, Germany
[4] Univ Warsaw, Inst Expt Phys, PL-00681 Warsaw, Poland
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2005年 / 401卷 / 1-2期
关键词：
X-ray diffraction; dislocations; synchrotron radiation; nonlinear optical materials; rare earth calcium oxyborate; GDCA4O(BO3)(3) CRYSTALS; IMAGE;
D O I：
10.1016/j.jallcom.2005.03.084
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The GdCa4O(BO3)(3) single crystals of monoclinic structure grown by the Czochralski technique were investigated by the synchrotron radiation white beam (SRWB) and conventional X-ray topography. The samples cut out parallel to the crystal growth axis b have been investigated in order to reveal the distribution of defects along the growth axis. Dislocations bundles, correlated with periodical changes of crystal diameter and large volume defects have been observed. The white beam synchrotron projection topography allowed better recognition of many details of the defect structure. (c) 2005 Elsevier B.V. All. rights reserved.
引用
收藏
页码：69 / 74
页数：6
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