Isothermal compression of TiO₂ (Rutile) under hydrostatic pressure to 106 kbar

Abstract

The pressure‐volume relationship for TiO 2 (rutile) was determined under hydrostatic pressure up to 106 kbar at room temperature by means of X ray diffraction, employing the diamond anvil pressure cell and ruby fluorescence pressure calibration technique. Assuming an ultrasonic value of K 0 ′ (6.84) from the Birch‐Murnaghan equation, the zero‐pressure bulk modulus ( K 0 ) value derived from the present pressure volume data is 2.11±0.07 Mbar, in good agreement with the ultrasonic isothermal Reuss bulk modulus values (2.076–2.095 Mbar).