Observation, par méthode de Lang, de différents arrangements de dislocations après recuit sur des cristaux de fluorure de lithium | Zendy

Pavis B. | Zendy; Grilhe J. | Zendy

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Observation, par méthode de Lang, de différents arrangements de dislocations après recuit sur des cristaux de fluorure de lithium

Author(s) -

Pavis B.,

Grilhe J.

Publication year - 1973

Publication title -

journal of applied crystallography

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.429

H-Index - 162

ISSN - 1600-5767

DOI - 10.1107/s0021889873008368

Subject(s) - lithium fluoride , dislocation , chemistry , crystallography , mineralogy , halide , single crystal , thermal , diffraction , analytical chemistry (journal) , optics , physics , thermodynamics , inorganic chemistry , chromatography

The influence of thermal treatments on the dislocation density in a lithium fluoride single‐crystal has been studied using Lang's X‐ray diffraction topography technique. Three principal types of dislocation arrangement, polygonization walls, high (10 4 cm cm −3 ) and low (≲ 10 2 cm cm −3 ) dislocation‐density subgrains were observed. It is found that obtaining specimens suitable for X‐ray observation requires severe thermal preparation conditions and depends particularly on the cooling rate (10°C/h).

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