NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS, 2020, 11 (6), P. 729–738
Structure of nanoparticles in the ZrO2–Y2O3 system, as obtained under hydrothermal conditions
A. I. Shuklina – Saint Petersburg State Electrotechnical University “LETI”, ul. Professora Popova, 5, Saint Petersburg, 197376, Russia
A.V. Smirnov – ITMO University, Kronverksky Pr. 49, bldg. A, Saint Petersburg, 197101, Russia
B. A. Fedorov – ITMO University, Kronverksky Pr. 49, bldg. A, Saint Petersburg, 197101, Russia
S. A. Kirillova – Saint Petersburg State Electrotechnical University “LETI”, ul. Professora Popova, 5, Saint Petersburg, 197376, Russia
O.V. Almjasheva – Ioffe Institute, Politekhnicheskaya St. 26, Saint Petersburg, 194021, Russia; almjasheva@mail.ru
It is shown that monocrystalline nanoparticles with fluorite structure are formed in the ZrO2–Y2O3 system, under hydrothermal conditions. The limiting content of Y2O3 in the nanocrystals based on zirconium dioxide is 21.7–22.6 mol.%. Yttrium oxide not included in the structure forms an amorphous phase, which is stable even upon thermal treatment at 1000–1300 °C. It has been found that under hydrothermal conditions the structure of the nanocrystals based on ZrO2(Y2O3) solid solution includes water, its content depending on yttrium oxide concentration in the solid solution.
Keywords: nanocrystals, hydrothermal synthesis, solid solution, zirconia.
PACS 61.46.+w, 81.40.-z
DOI 10.17586/2220-8054-2020-11-6-729-738
