In situ structure characterization of Pb(Yb1/2Nb1/2)O3-PbTiO3 crystals under high pressure-temperature

Authors

Lingping Kong, Harbin Institute of Technology
Luhong Wang, Harbin Institute of Technology
Shujun Zhang, The Pennsylvania State UniversityFollow
Oliver Tschauner, University of Nevada
Yusheng Zhao, University of Nevada
Wenge Yang, Hpsync, Geophysical Laboratory
Haozhe Liu, Harbin Institute of Technology
Ho Kwang Mao, Hpsync, Geophysical Laboratory

RIS ID

107266

Publication Details

Kong, L., Wang, L., Zhang, S., Tschauner, O., Zhao, Y., Yang, W., Liu, H. & Mao, H. (2012). In situ structure characterization of Pb(Yb1/2Nb1/2)O3-PbTiO3 crystals under high pressure-temperature. Applied Physics Letters, 101 (6), 062904-1-062904-4.

Abstract

The stability field of the piezoelectric/ferroelectric phase of solid solution 0.47Pb(Yb 1/2Nb 1/2)O 3-0.53PbTiO 3 (PYN-PT) has been studied using in situ x-ray diffraction (XRD) and Raman spectroscopy techniques under high pressure and high temperature conditions to observe the evolution of features. PYN-PT remains in the piezoelectric tetragonal phase up to approximately 6.5 GPa at room temperature then transforms to a paraelectric cubic phase, which exhibits local disorder. The cubic phase is stable up to 50 GPa. Based on the high pressure and high temperature XRD results, we present a pressure-temperature phase diagram of PYN-PT which constraints the stability region of the ferroelectric phase. 2012 American Institute of Physics.