TY - JOUR
T1 - Enthalpy of transformation of a high-pressure polymorph of titanium dioxide to the rutile modification
AU - Navrotsky, Alexandra
AU - Jamieson, John C.
AU - Kleppa, Ole J.
PY - 1967
Y1 - 1967
N2 - The enthalpy of transformation of a high-pressure form of titanium dioxide, which has the alpha lead dioxide structure, to the rutile modification was measured by the method of "transposed temperature-drop calorimetry." For the reaction, titanium dioxide (alpha lead dioxide form) transforming to rutile, the change in the heat content is -0.76±0.17 kilocalorie per mole. From this value and the volume change (+2.8 percent) associated with the transformation, we estimate the equilibrium pressure at 294°K to be 60±20 kilobars.
AB - The enthalpy of transformation of a high-pressure form of titanium dioxide, which has the alpha lead dioxide structure, to the rutile modification was measured by the method of "transposed temperature-drop calorimetry." For the reaction, titanium dioxide (alpha lead dioxide form) transforming to rutile, the change in the heat content is -0.76±0.17 kilocalorie per mole. From this value and the volume change (+2.8 percent) associated with the transformation, we estimate the equilibrium pressure at 294°K to be 60±20 kilobars.
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U2 - 10.1126/science.158.3799.388
DO - 10.1126/science.158.3799.388
M3 - Article
AN - SCOPUS:0007032183
SN - 0036-8075
VL - 158
SP - 388
EP - 389
JO - Science
JF - Science
IS - 3799
ER -