TY  - JOUR
AU  - Pathak, Santanu
AU  - Mandal, Guruprasad
AU  - Das, Parnika
AU  - Dey, Arka Bikash
TI  - Structural characteristics of HfO<sub>2</sub> under extreme conditions
JO  - Materials chemistry and physics
VL  - 255
SN  - 0254-0584
CY  - New York, NY [u.a.]
PB  - Elsevier
M1  - PUBDB-2021-01432
SP  - 123633
PY  - 2020
N1  - Waiting for fulltext
AB  - Pressure induced structural change of HfO<sub>2</sub> was extensively studied up to 10 GPa with diffraction technique using synchrotron X-ray radiation. The experiment drew attention as ambiguities still exist over the monoclinic to orthorhombic evolution of HfO<sub>2</sub> at high pressure condition. Rietveld refinement of the diffraction patterns leads to determination of the detailed structure of HfO<sub>2</sub> at different pressures. The space group of its first orthorhombic phase is confirmed. Density functional calculations were carried out to understand the pressure induced phase transition. High temperature study of this material was also performed up to 1373 K (1100 <sup>0</sup>C) using synchrotron X-ray source for studying suitability of the material in high temperature applications and precise thermal expansion coefficients are reported.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000606791200008
DO  - DOI:10.1016/j.matchemphys.2020.123633
UR  - https://bib-pubdb1.desy.de/record/456281
ER  -