Journal of the Korean Ceramic Society (한국세라믹학회지)

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

다이아몬드 엔빌 셀을 이용한 Donor doped Pb(Zr0.52Ti0.48)O3 세라믹스의 상전이 압력 연구

  • 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)
  • 조경호 (국방과학연구소 4기술연구본부 2부) ;
  • 고영호 (국방과학연구소 4기술연구본부 2부) ;
  • 서창의 (국방과학연구소 4기술연구본부 2부) ;
  • 김광주 (국방과학연구소 4기술연구본부 2부)
  • Received : 2011.07.07
  • Accepted : 2011.08.03
  • Published : 2011.09.30
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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.

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References

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