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Material Loss and High Temperature Phase Transition in Lithium Ferrite
Author(s) -
MISHRA RAJA K.,
BIEST OMER O.,
THOMAS G.
Publication year - 1978
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.1151-2916.1978.tb09253.x
Subject(s) - spinel , torr , oxygen , kinetics , materials science , lithium (medication) , ferrite (magnet) , phase transition , phase (matter) , analytical chemistry (journal) , mineralogy , chemistry , chemical engineering , thermodynamics , metallurgy , composite material , medicine , physics , organic chemistry , chromatography , quantum mechanics , endocrinology , engineering
The morphology and kinetics of the phase transformations accompanying oxygen and lithium loss in LiFe 5 O 8 were studied at 1200°C in air, in oxygen ( P O 2 = 760 torr), and in vacuum ( P = 5×10 −5 torr), using high‐voltage electron microscopy. LiFeO 2 nucleated and grew in the LiFe 5 O 8 matrix and finally transformed to spinel in all three atmospheres; however, the kinetics of the transformation depended on the atmobphere. The dependence of these phase transformations on material loss is discussed.