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Study of (010)[101] and (001)[110]/2 dislocations in K-feldspars by HRTEM and modelling (1988)

Zheng, Yuanlin ; Gandais, Madeleine ; Heggie, Malcolm

Springer

Physics and chemistry of minerals 15 (1988), S. 349-354

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ISSN: 1432-2021

Source: Springer Online Journal Archives 1860-2000

Topics: Chemistry and Pharmacology , Geosciences , Physics

Notes: Abstract Dislocations in K-feldspars were studied by high resolution transmission electron microscopy (HRTEM) and HRTEM images were further submitted to a filtering in order to improve their interpretation. (010)[101] dislocations appear to be dissociated with (001)[001]/2 planar defect, whereas (001)[110]/2 dislocations are perfect. Structural models of planar defects in (010) and (001) planes were investigated. The energy estimation of these models was performed using the Keating potential. The structural analysis agreed with the experimental result in that dislocations can be dissociated in the (010) plane, whereas they cannot be dissociated in the (001) plane.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00311039

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