2010/06/01 by P. P. Fedorov, П. П. Федоров, Е. А. Ткаченко +12
Materials Science · #Luminescence Properties of Advanced Materials #Nuclear materials and radiation effects #X-ray Diffraction in Crystallography
paper · doi:10.1134/s003602361006001x
crossref issued 2010/06/01 · crossref published 2010/06/01 · crossref published-print 2010/06/01 · openalex publication_date 2010/06/01 · crossref created 2010/06/23 · crossref published-online 2010/06/24 · openalex created_date 2025/10/10 · crossref deposited 2026/04/03 · openalex updated_date 2026/08/01 · crossref indexed 2026/08/01
Reactions of solutions of yttrium oxide in nitric acid with a 1.67 M NH 4 HCO 3 solution were studied by direct and back titration. When the concentration of the reacting solution was within 0.031–0.052 mol/L (as Y 2 O 3 ), yttrium carbonate Y 2 (CO 3 ) 3 · n H 2 O ( n ≈ 2.5) of fibrous or spherulitic morphology precipitated. When the concentration was decreased to 0.022 mol/L, a new phase of platy morphology appeared. Heating these precipitates to 650–680°C yielded yttrium oxide having coherent scattering domain sizes of 40–80 nm. Y 2 O 3 particles retain the precursor morphology.