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Crystals of rare‐earth‐ferrous borates
Author(s) -
Maltseva L. I.,
Leonyuk N. I.,
Timchenko T. I.
Publication year - 1980
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.19800150107
Subject(s) - boron , solubility , rare earth , materials science , ferrous , mineralogy , crystallography , crystal structure , solid solution , solid solubility , bismuth , inorganic chemistry , chemistry , metallurgy , organic chemistry
Crystals of rare‐earth‐ferrous borates (structure of carbonate mineral huntite, space group R 32) were obtained from the solution‐melt with the Bi 2 O 3 ‐B 2 O 3 base. It was established by the methods of X‐ray structural and chemical analyses that large amounts of Bi from the solution became part of the crystals affecting their solubility, morphology and hardness. Solubility curves for YFe‐, NdFe‐, and ErFe‐borates in the 3 Bi 2 O 3 5 B 2 O 3 melt were plotted. Refinement of crystalline structure of NdFe‐borate showed that bismuth takes up place of rare‐earth ion in the crystal lattice. Parameters of unit cells, density and refractive indexes of the obtained crystals were measured.