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Purification, Growth of Single Crystals, and Selected Properties of MgF 2
Author(s) -
SCOTT WILLIAM D.
Publication year - 1962
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1962.tb11065.x
Subject(s) - materials science , infrared , ultraviolet , modulus , vacuum ultraviolet , analytical chemistry (journal) , optics , composite material , optoelectronics , chemistry , chromatography , physics
A modified Bridgman‐Stockbarger method was used to grow single crystals of MgF 2 weighing about 200 g. The purity of the charge material was critical. Purification was achieved by first drying technical‐grade MgF 2 and then vaporizing in vacuum. Spectral transmission of the single crystals was measured; in comparison with CaF 2 , MgF 2 was slightly less transparent in the infrared region and had about the same transparency in the ultraviolet region. Modulus‐of‐rupture values were also obtained in several orientations. No plastic flow was observed.