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Low‐Temperature Phase Relationships in the System ZrO 2 ‐TiO 2
Author(s) -
McHALE ANNA E.,
ROTH ROBERT S.
Publication year - 1986
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.1151-2916.1986.tb07368.x
Subject(s) - phase (matter) , materials science , atmospheric temperature range , precipitation , characterization (materials science) , phase transition , doping , crystal structure , crystallography , analytical chemistry (journal) , mineralogy , chemistry , thermodynamics , nanotechnology , physics , optoelectronics , organic chemistry , meteorology , chromatography
The phase relationships in the system ZrO 2 ‐TiO 2 near the compound ZrTiO 4 have been clarified through an experimental study involving the characterization of both single‐crystal and powder specimens, the latter prepared through conventional solid‐state reaction and also by low‐temperature co‐precipitation methods. Zr 1+ x Ti 1‐ x O 4 (1/10 > x >‐1/6), having the α‐PbO 2 ‐type structure, is found to transform on cooling between ∼1100° and ∼1150°C. Below this temperature there is an unusual, continuous phase transition leading to the formation of the stable low‐temperature phase ZrTi 2 O 6 . Low‐level doping with Y 2 O 3 was found to enhance apparent cation ordering in intermediate compositions in the temperature range just below the phase transition.