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High-Pressure Polymorphism of Titanium Dioxide
John C. Jamieson and Bart Olinger
New Series, Vol. 161, No. 3844 (Aug. 30, 1968), pp. 893-895
Published by: American Association for the Advancement of Science
Stable URL: http://www.jstor.org/stable/1724880
Page Count: 3
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X-ray diffraction studies made in situ under conditions of high pressure and high temperature revealed the direct transition of rutile to the alpha lead dioxide form in titanium dioxide. Compressibility studies of this alpha lead dioxide form at room temperature showed anomalous behavior in that its molar volume converges close to, but not equal to, that of the rutile form. Under this circumstance an unexpectedly large error appears in the calculations of the equilibrium pressure for the two forms at 298° K.
Science © 1968 American Association for the Advancement of Science