The role of steric factor ofthe etchant on the reactivity at line defects in single crystals ofbismuth has been studied. It is observed that in the behaviour of monocarboxylic acid containing etchants, on dilution, cause no change in kink kinetics due to an increase in the steric factor. An increase in the CH radical also causes a decrease in the steric factor lowering the steric hinderance of the reaction. 2

The effect of temperature on the etch pit morphology of the (111) cleavage planes of bismuth single crystals are described. A chemical etchant which revealed the emergent ends of dislocations was used. The shape of the dislocation etch pits changes from the characteristic triangular shape at room temperature to a hexagonal shape as the etching temperature is increased to 60 °C. This change in etch pit morphology is explained in terms of the removal of atoms from steps.

Crystal Research and TechnologyVolume 17, Issue 7 p. K65-K66 Short Note Etching of Bismuth Cleavages in Nitric Acid — Propionic Acid Solutions L. K. Maniar, Corresponding Author L. K. Maniar Solid State Physics and Materials Science Laboratory, Department of Physics, Saurashtra University, Rajkot, IndiaDepartment of Physics, Saurashtra University Kalavad Road Rajkot – 360005, IndiaSearch for more papers by this authorB. J. Mehta, Corresponding Author B. J. Mehta Solid State Physics and Materials Science Laboratory, Department of Physics, Saurashtra University, Rajkot, IndiaDepartment of Physics, Saurashtra University Kalavad Road Rajkot – 360005, IndiaSearch for more papers by this authorB. S. Shah, Corresponding Author B. S. Shah Solid State Physics and Materials Science Laboratory, Department of Physics, Saurashtra University, Rajkot, IndiaDepartment of Physics, Saurashtra University Kalavad Road Rajkot – 360005, IndiaSearch for more papers by this author L. K. Maniar, Corresponding Author L. K. Maniar Solid State Physics and Materials Science Laboratory, Department of Physics, Saurashtra University, Rajkot, IndiaDepartment of Physics, Saurashtra University Kalavad Road Rajkot – 360005, IndiaSearch for more papers by this authorB. J. Mehta, Corresponding Author B. J. Mehta Solid State Physics and Materials Science Laboratory, Department of Physics, Saurashtra University, Rajkot, IndiaDepartment of Physics, Saurashtra University Kalavad Road Rajkot – 360005, IndiaSearch for more papers by this authorB. S. Shah, Corresponding Author B. S. Shah Solid State Physics and Materials Science Laboratory, Department of Physics, Saurashtra University, Rajkot, IndiaDepartment of Physics, Saurashtra University Kalavad Road Rajkot – 360005, IndiaSearch for more papers by this author First published: 1982 https://doi.org/10.1002/crat.2170170723AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat No abstract is available for this article. Volume17, Issue71982Pages K65-K66 RelatedInformation