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A Study of precipitation morphology in NaCl:Sr and NaCl:Ba crystals
Author(s) -
Reddy Katta Narasimha,
Reddy A. Laxma
Publication year - 1990
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170250504
Subject(s) - precipitation , rod , strontium , barium , quenching (fluorescence) , morphology (biology) , crystal (programming language) , materials science , sodium , crystallography , phase (matter) , mineralogy , chemical engineering , chemistry , optics , fluorescence , geology , metallurgy , medicine , paleontology , physics , alternative medicine , organic chemistry , pathology , meteorology , computer science , programming language , engineering
Single crystals of sodium chloride grown from melt containing different concentrations of strontium and barium have been observed to contain a second phase precipitating throughout the interior in the form of thin rods and well defined polygonal platelets. Two types of rods have been observed, one type oriented along 〈100〉 and the other along 〈110〉 directions. The platelets are variously in the form of hexagons, octagons, and rhombs. The precipitates disappear on quenching the crystal and reappear on aging the crystals under suitable conditions.