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Polymorphs of Cobalt Oxide
Author(s) -
Grimes Robin W.,
Lagerlöf K. Peter D.
Publication year - 1991
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.1151-2916.1991.tb06873.x
Subject(s) - wurtzite crystal structure , zinc , crystallography , cobalt , crystallite , materials science , crystal structure , monoxide , inorganic chemistry , tetrahydrate , mineralogy , chemistry , metallurgy
Through controlled thermal decomposition of cobalt acetate tetrahydrate, cobalt monoxide can be synthesized with three different crystal structures: rock salt, zinc blende, and wurtzite. Using electron microscopy techniques, it is shown that the polymorphs exhibit characteristic crystallite morphologies; “tetrahedral” for the zinc blende type and “lathlike” for the wurtzite form. Atomistic simulation calculations predict the lattice energies of the three polymorphs to be relatively close, with the rock salt polymorph being most stable, followed by the wurtzite form and lastly zinc blende.