Abstract
The pyrochlore-type MgZrSi2O7 has been investigated by in situ synchrotron energy-dispersive X-ray diffraction measurements up 24.3 GPa at room temperature in a multianvil high pressure apparatus. The pressure has been calculated using an internal gold metal pressure calibrant. No phase transformation was observed in this study. A third-order Birch–Murnaghan equation of state was used to fit the pressure–volume data. The fitting gives a volume of V 0=802.8±0.2 Å3, an isothermal bulk modulus of K T =249±12 GPa, and first pressure derivative of K′ T =3.2±1.3. If K′ T is fixed as 4, K T is obtained as 241.8±2.6 GPa. Compared with zirconate or titanate pyrochlores, MgZrSi2O7 shows a smaller compressibility due to a larger cation radii ratio (r Mg, Zr /r Si).
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
