Abstract
In this paper, results obtained from high pressure-high temperature X-ray diffraction study of Dy6UO12 are reported. X-ray diffraction (XRD) studies at ambient temperature on Dy6UO12 reveals that the rhombohedral structure is stable up to 21.6 GPa. Beyond 21.6 GPa the peaks broaden out substantially indicating emergence of disorder in the system. Bulk modulus and its pressure derivative is 144 GPa and 7.0 respectively. High Pressure and High Temperature (HP-HT) XRD studies up to ∼ 11 GPa and ∼673 K was carried out using novel combination of membrane cell DAC coupled to a high flux micro-focus X-ray generator. At ambient pressure, thermal expansion coefficient comes out to be 14.5 × 10−6 K−1 at 400 K. Further, at 1 GPa and 2.6 GPa the thermal expansion coefficients are 21.4 × 10−6 K−1 and 32 × 10−6 K−1 respectively, in the temperature range ∼293–673 K. The thermal expansion coefficient shows an increasing trend with pressure.
Sign-in/Register to access full text options 
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 callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
