Author： Shan Yue
Publisher： Taylor & Francis Ltd
ISSN： 0015-0193
Source： Ferroelectrics, Vol.337, Iss.1, 2006-01, pp. : 71-76
Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.
Abstract
A rhomboidal distorted perovskite HgTiO 3 with the unit cell parameters a = 5.3781 Å and c = 13.604 Å ( Z = 6) was synthesized under 6 GPa at 600°C for 30 minutes, using a mixture starting material HgO and TiO 2 in a closed Au-capsule. Through investigations on the relationship between its crystal structure and applied pressure by the synchrotron X-ray beam (wavelength = 0.72000 Å) at room temperature, we found a rhombohedral distortion decreased when the pressure increased and the symmetry approached to the cubic under a pressure of 2.3 GPa. Above room temperature, some abnormalities were observed from the measurements of differential scanning calorimetry (DSC) and dielectric property. These results suggested that HgTiO 3 is a ferroelectrics at room temperature.
Related content
High Pressure Synthesis and Phase Transition of HgTiO 3
By Shan Yue
Ferroelectrics, Vol. 326, Iss. 1, 2005-01 ,pp. :
Access to resources
Recommend
Detailed Evolution of the Ferroelectric Phase Transition in BaTiO3
By Kojima A. Hiraoka H. Morimura R. Yoshimura Y. Tozaki K.
Ferroelectrics, Vol. 462, Iss. 1, 2014-04 ,pp. :
Ferroelectric Phase Transition in Perovskite Oxide CdTiO3
By Shan Yue Jin Mori Hajime Itoh Mitsuru Imoto Hideo
Ferroelectrics, Vol. 270, Iss. 1, 2002-01 ,pp. :