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Low‐Temperature Synthesis Route to MgNb 2 O 6
Author(s) -
Horowitz Harold S.
Publication year - 1988
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/j.1151-2916.1988.tb05070.x
Subject(s) - columbite , calcination , yield (engineering) , materials science , solid state , mineralogy , solid solution , inorganic chemistry , particle size , magnesium , chemical engineering , crystallography , chemistry , ceramic , metallurgy , catalysis , organic chemistry , engineering
A solution‐derived precursor may be calcined at temperatures >500°C to yield MgNb 2 O 6 . Calcining temperatures 800°C result in the familiar, cation‐ordered columbite structure type. Calcining temperatures <800°C result in a previously unobserved, cation‐disordered α‐PbO 2 structure type. The low‐temperature form of MgNb 2 O 6 is a more reactive material than is obtained by conventional solid‐state reaction as evidenced by its small particle size and its ability to react with PbO to form lead magnesium niobate at lower temperatures.