Crystal chemical aspect of synthesis of laser crystals with garnet structure in Ln{sub 2}O{sub 3}-Sc{sub 2}O{sub 3}-M{sub 2}O{sub 3} systems (Ln = Y, Gd; M = Ga, Al)
Journal Article
·
· Journal of Structural Chemistry
OSTI ID:96298
- M.V. Lomonosov Moscow Academy of Fine Chemical Technology (Russian Federation)
Regions of existence were determined for various types of poly- and monocrystalline solid solutions (Ln{sub 3}[Sc{sub y}M{sub 2-y}]M{sub 3}O{sub 12}; [Ln{sub 3-x}Sc{sub x}][Sc{sub y}M{sub 2-y}]M{sub 3}O{sub 12}; Ln{sub 3}[Ln{sub 2}Sc{sub y}M{sub 2-y-z}]M{sub 3}O{sub 12}; Ln = Y, Gd; M = Ga, Al) by analyzing the diagrams r{sup VIII}-r{sup VI} (r{sup VIII} and r{sup VI} are weighted mean dodecahedral and octahedral radii, respectively). The authors found the position of congruently melting compositions in r{sup VIII}-r{sup VI} coordinates and optimal compositions for obtaining Na{sup 3+}- and Cr{sup 3+}-doped crystals. The structure of the congruently melting composition was found to be formed of {open_quotes}equilibrium{close_quotes} polyhedra, which need not be stabilized. It is shown that a congruently melting composition, which is absent in the original matrix, may be achieved by isomorphous substitutions at certain positions of the structure. The most probable mechanisms of formation of poly- and monocrystalline solid solutions with garnet structure are suggested using the calculated binodal curves of decomposition.
- OSTI ID:
- 96298
- Journal Information:
- Journal of Structural Chemistry, Journal Name: Journal of Structural Chemistry Journal Issue: 5 Vol. 35; ISSN JSTCAM; ISSN 0022-4766
- Country of Publication:
- United States
- Language:
- English
Similar Records
Synthesis and crystal structure of Ln{sub 2}M{sup 2+}Ge{sub 4}O{sub 12}, Ln=rare-earth element or Y; M=Ca, Mn, Zn
Crystal structures and magnetic properties of lanthanide containing borates LnM(BO{sub 3}){sub 2} (Ln=Y, Ho–Lu; M=Sc, Cr)
{delta}-Phase to defect fluorite (order-disorder) transition in the R{sub 2}O{sub 3}-MO{sub 2} (R = Sc, Tm, Lu; M = Zr, Hf) systems
Journal Article
·
Sat May 15 00:00:00 EDT 2010
· Journal of Solid State Chemistry
·
OSTI ID:21372609
Crystal structures and magnetic properties of lanthanide containing borates LnM(BO{sub 3}){sub 2} (Ln=Y, Ho–Lu; M=Sc, Cr)
Journal Article
·
Tue Oct 15 00:00:00 EDT 2013
· Journal of Solid State Chemistry
·
OSTI ID:22274118
{delta}-Phase to defect fluorite (order-disorder) transition in the R{sub 2}O{sub 3}-MO{sub 2} (R = Sc, Tm, Lu; M = Zr, Hf) systems
Journal Article
·
Fri Apr 15 00:00:00 EDT 2011
· Materials Research Bulletin
·
OSTI ID:22210039