High-Pressure Polymorphism of Titanium Dioxide

American Association for the Advancement of Science (AAAS) - Tập 161 Số 3844 - Trang 893-895 - 1968
John C. Jamieson1, Bart Olinger1
1Department of Geophysical Sciences, University of Chicago, Chicago, Illinois, 60637

Tóm tắt

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.

Từ khóa


Tài liệu tham khảo

BENDELIANY, N.A., GEOCHEMISTRY-USSR 5: 499 (1966).

Clark S. P. Handbook of Physical Constants (1966).

CROMER, D.T., THE STRUCTURES OF ANATASE AND RUTILE, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 77: 4708 (1955).

DECKER, D.L., EQUATION OF STATE OF SODIUM CHLORIDE, JOURNAL OF APPLIED PHYSICS 37: 5012 (1966).

Jamieson, J. C., Physics of Solids at High Pressure: 444 (1965).

KABALKINA, S.S., SOVIET PHYSICS-DOKLADY 12: 946 (1968).

10.1126/science.155.3768.1401

NAVROTSKY, A, ENTHALPY OF TRANSFORMATION OF A HIGH-PRESSURE POLYMORPH OF TITANIUM DIOXIDE TO RUTILE MODIFICATION, SCIENCE 158: 388 (1967).

Simons, P. Y., Program, Annual Meeting of the Geological Society of America: 203 (1966).

SWANSON H. E. U.S. NATIONAL BUREAU OF STANDARDS CIRCULAR 539 1 (1953).

VERESHCHAGIN, L. F., SOVIET PHYSICS JETP-USSR 22: 1181 (1966).

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Thông tin xuất bản

American Association for the Advancement of Science (AAAS)

Tập 161 Số 3844

893-895

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