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http://dx.doi.org/10.4191/kcers.2011.48.5.471

The Study on Phase Transition Pressure of Donor doped Pb(Zr0.52Ti0.48)O3 Ceramics with Diamond Anvil Cell  

Cho, Kyung-Ho (Agency for Defense Development, The 4th R&D Institute-2)
Ko, Young-Ho (Agency for Defense Development, The 4th R&D Institute-2)
Seo, Chang-Eui (Agency for Defense Development, The 4th R&D Institute-2)
Kim, Kwang-Joo (Agency for Defense Development, The 4th R&D Institute-2)
Publication Information
Journal of the Korean Ceramic Society / v.48, no.5, 2011 , pp. 471-478 More about this Journal
Abstract
Investigations of crystal structure and phase transition of $Pb(Zr_{0.52}Ti_{0.48})O_3$ ceramics doped with A-site substitution impurity (La, Nd) or B-site substitution impurity (Sb, Nb) at 2 mol% concentration were carried out. X-ray diffraction patterns of impurities doped $Pb(Zr_{0.52}Ti_{0.48})O_3$ ceramics have been measured at pressures up to ~5 GPa with diamond anvil cell and synchrotron radiation. The patterns were obtained at room temperature using methanol-ethanol mixture as pressure-transmitting media. In order to refine the crystal structure, Rietveld analysis has been performed. The structures of impurities doped $Pb(Zr_{0.52}Ti_{0.48})O_3$ ceramics are tetragonal in space group P4mm at ambient pressure and are transformed into a cubic phase in space group Pm$\bar{3}$m as the pressure increases. In this study, when A-site substitution donor $La^{3+}$ or $Nd^{3+}$ ion was added to $Pb(Zr_{0.52}Ti_{0.48})O_3$ ceramics, the phase transition phenomena showed up at the pressure of 2.5~4.6 GPa, but when B-site substitution donor $Nb^{5+}$ or $Sb^{5+}$ ion was added to it, the phase transition appeared at relatively lower pressure of 1.7~2.6 GPa.
Keywords
Diamond anvil cell; Crystal structure; Phase transition; PZT;
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