Journal Article

PUBDB-2015-04923

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Characterization of crystal lattice defects in calciu molybdate single crystals $\mathrm{(CaMoO_{4})}$ by means of X-ray diffraction topography

Wierzbicka, E. ; Malinowska, A. ; Wieteska, K. ; Wierzchowski, W.>Extern* ; Lefeld-Sosnowska, M. ; Świrkowicz, M. ; Łukasiewicz, T. (Corresponding author) ; Paulmann, C.

2015
Wiley New York, NY [u.a.]

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Please use a persistent id in citations: doi:10.1002/xrs.2639

Abstract: Calcium molybdate CaMoO$_{4}$ crystals are perspective materials for many applications in acoustic-electronics, acoustic-optics and nonlinear optics. They are also used as laser hosts, scintillators, different kinds of substrates and active elements of ionizing radiation detectors. For all these applications large-sized single crystals of high structural quality are required.The samples of CaMoO$_{4}$ crystals have been investigated by means of synchrotron white beam topography, monochromatic beam topography and conventional X-ray Lang projection topography. The high-resolution rocking curves have also been taken using synchrotron and conventional arrangements.The topographs showed a rather good crystallographic perfection of the crystals. In particular, they did not reveal any segregation fringes proving high homogeneity of the chemical composition. Relatively high densities (<10$^{4}$ cm$^{−2}$) of weak point-like diffraction contrasts were observed, which can be most probably interpreted as dislocation outcrops.The distinct main imperfection of the investigated crystals was variously developed block structure. The evaluation of lattice misorientation was realized by means of projection and section white beam synchrotron radiation topographs. The evaluated misorientation between various blocks was in the range of several arc minutes.

Note: (c) John Wiley & Sons, Ltd. Post referee full text in progress. Embargo for post referee full text 1 year from 14 JUL 2015.

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Contributing Institute(s):

1. DOOR-User (DOOR)

Research Program(s):

1. 899 - ohne Topic (POF3-899) (POF3-899)

Experiment(s):

1. DORIS Beamline F1 (DORIS III)
2. DORIS Beamline E2 (DORIS III)

Appears in the scientific report 2015

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Database coverage:
Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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