NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS, 2017, 8 (4), P. 462–470
Synthesis of CaF2–YF3 nanopowders by coprecipitation from aqueos solutions
P. P. Fedorov – A. M. Prokhorov General Physics Institute, Russian Academy of Sciences, 38 Vavilov Street, Moscow, 119991, Russia; ppfedorov@yandex.ru
M. N. Mayakova – A. M. Prokhorov General Physics Institute, Russian Academy of Sciences, 38 Vavilov Street, Moscow, 119991, Russia
S.V. Kuznetsov – A. M. Prokhorov General Physics Institute, Russian Academy of Sciences, 38 Vavilov Street, Moscow, 119991, Russia
V.V. Voronov – A. M. Prokhorov General Physics Institute, Russian Academy of Sciences, 38 Vavilov Street, Moscow, 119991, Russia
Yu. A. Ermakova – A. M. Prokhorov General Physics Institute, Russian Academy of Sciences, 38 Vavilov Street, Moscow, 119991, Russia
A. E. Baranchikov – N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991, Russia
Study of the CaF2–YF3 system by co-precipitation from aqueous nitrate solutions revealed the formation of Ca1-xYxF2+x solid solution precipitate containing up to 20 mol. % yttrium fluoride (x ≤ 2). A higher yttrium to calcium ratio in the starting solutions caused additional precipitation of orthorhombic β-YF3 nanophase elongated along the ⟨b⟩ axis. Cubic (H3O)Y3F10 phase was also formed (SSG Fm3m, α = 11.60 A° , KY3F10 structural type).
Keywords: calcium fluoride, yttrium fluoride, nanopowders.
DOI 10.17586/2220-8054-2017-8-4-462-470