Premium
High‐Temperature Crystallization, Composition, Structure, and Certain Properties of Rare‐Earth Gallium Borates
Author(s) -
Al'Shinskaya L. I.,
Leonyuk N. I.,
Timchenko T. I.
Publication year - 1979
Publication title -
kristall und technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0023-4753
DOI - 10.1002/crat.19790140802
Subject(s) - isostructural , crystallization , boron , rare earth , gallium , composition (language) , luminescence , materials science , mineralogy , crystallography , spectral line , chemistry , crystal structure , organic chemistry , metallurgy , physics , linguistics , philosophy , optoelectronics , astronomy
Solution‐melts based on PbF 2 —B 2 O 3 and Bi 2 O 3 —B 2 O 3 were used in studying the stability regions and for growth, by way of spontaneous crystallization, of crystals up to 3 mm in size of twelve compounds having the general formula RGa 3 (BO 3 ) 4 . All of these compounds are isostructural with carbonate mineral huntite. Their composition is highly dependent on that of the crystallization medium. The facing of the crystals is characterized by a small number of simple forms {10 1 1}, {11 2 0}, {2 1 1 0}, and less frequently {02 2 1}, {0112}, {40 4 1}. The examined parameters include the IR spectra, luminescence spectra, heat of formation from oxides, harness (6 to 8 units on the Mohs scale) and others.