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Estimation of Sc 3+ solubility in dodecahedral and octahedral sites in YSAG:Yb
Author(s) -
Tarala Vitaly A.,
Shama Marina S.,
Chikulina Irina S.,
Kuznetsov Sergey V.,
Malyavin Fedor F.,
Vakalov Dmitry S.,
Kravtsov Alexander A.,
Pankov Mikhail A.
Publication year - 2019
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/jace.16294
Subject(s) - scandium , dodecahedron , octahedron , solubility , crystallography , solid solution , pyrope , materials science , ytterbium , analytical chemistry (journal) , crystal structure , inorganic chemistry , chemistry , mineralogy , doping , metallurgy , organic chemistry , optoelectronics
A method for synthesizing YSAG :Yb optical ceramics has been developed. Additionally, the phase composition and unit cell parameters for YSAG , Yb SAG , and their solid solutions have been determined. The limits of scandium solubility in the dodecahedral and octahedral sites of garnet crystal lattice have been estimated after annealing at 1600°C. The scandium solubility limit in the dodecahedral sites of YSAG :Yb was found to be 66 ± 2 at.%. The limit of scandium solubility in octahedral sites depended upon the type of garnet‐forming cations. The solubility limit for Sc 3+ decreased from 97.5 ± 0.5 to 68.5 ± 1 at.% with simultaneous increase of ytterbium content in the YSAG ‐Yb SAG system. Therefore, the region of solid solutions existing with a garnet structure in the Al 2 O 3 –Sc 2 O 3 –Yb 2 O 3 –Y 2 O 3 system was determined. Samples having scandium in both dodecahedral and octahedral sites, which had a Sc 3+ content of ~30 at.%, were synthesized as a precursor for optical ceramic production.
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