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Characterization of the Phase Mixture Comprising Sodium Hafnate and Hafnia
Author(s) -
Näfe Helfried,
Karpukhitalia,
Gautam Devendraprakash,
Näfe Gregor
Publication year - 2014
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201400097
Subject(s) - hafnia , stoichiometry , phase (matter) , oxide , materials science , sodium , electrochemistry , characterization (materials science) , analytical chemistry (journal) , chemical engineering , chemistry , nanotechnology , metallurgy , chromatography , cubic zirconia , ceramic , organic chemistry , electrode , engineering
Solid state electrochemical and XRD studies reveal that the phase relation between Na 2 HfO 3 and HfO 2 in the temperature region below about 600 °C is governed by the existence of a third phase disregarded so far, i.e. non‐stoichiometric Na‐modified cubic HfO 2 , which is intermediate in terms of the sodium oxide chemical potential.