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P–T Boundary of α‐PbO 2 Type and Baddeleyite Type High‐Pressure Phases of Titanium Dioxide
Author(s) -
Tang Jie,
Endo Shoichi
Publication year - 1993
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.1151-2916.1993.tb03683.x
Subject(s) - baddeleyite , phase diagram , rutile , phase boundary , titanium dioxide , type (biology) , materials science , high pressure , phase (matter) , titanium , diffraction , boundary (topology) , mineralogy , thermodynamics , analytical chemistry (journal) , chemistry , metallurgy , geology , optics , physics , zircon , mathematics , geochemistry , paleontology , organic chemistry , chromatography , mathematical analysis
In situ X‐ray diffraction experiments have been carried out under high pressures up to 18 GPa and temperatures up to 950°C to determine the stable regions of the α‐PbO 2 type and baddeleyite type high‐pressure phases of TiO 2 . Observation of the transitions among the three phases, including the rutile phase, along various paths on the P–T diagram results in the phase boundary equation, T (°C) = 188.7 P (GPa) ‐ 2192.5, separating the α‐PbO 2 and baddeleyite phases.