Synthesis of Pb(Zr, Ti)O3 fine ceramic powder at room temperature by dry mechanochemical solid-state reaction evaluated using synchrotron radiation X-ray diffraction

The validity of the mechanochemical solid-state reaction by dry ball milling for synthesizing Pb(Zr, Ti)O3 (PZT) fine ceramic powder at room temperature (RT) was evaluated using synchrotron radiation X-ray diffraction (SXRD). A mixture of PbZrO3 (PZ) and PbTiO3 (PT) powders with a molar ratio of 1:1...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 2021-11, Vol.60 (SF)
Main Authors: Wu, Lin, Kim, Sangwook, Moriyoshi, Chikako, Kuroiwa, Yoshihiro, Suzuki, Muneyasu, Shinoda, Kentaro, Aoyagi, Rintaro, Akedo, Jun
Format: Article
Language:English
Subjects:
Ball milling
Ceramic powders
Crystal structure
Crystals
Lead zirconate titanates
mechanochemical solid-state reaction
Phase transitions
PZT
Radiation
Rietveld method
Room temperature
Solid state
Structural analysis
Synchrotron radiation
synchrotron radiation X-ray diffraction
Synchrotrons
Transition temperature
X-ray diffraction
Zirconium
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Summary:The validity of the mechanochemical solid-state reaction by dry ball milling for synthesizing Pb(Zr, Ti)O3 (PZT) fine ceramic powder at room temperature (RT) was evaluated using synchrotron radiation X-ray diffraction (SXRD). A mixture of PbZrO3 (PZ) and PbTiO3 (PT) powders with a molar ratio of 1:1 was prepared as the starting powder. To confirm the synthesis of PZT, the structural characteristics of the ball-milled samples with different milling times were investigated by analyzing the SXRD data using the Rietveld method. The solid-state reaction was nearly complete in a short milling time of 4 h at RT. After ball milling for approximately 8 h, only a single phase of PZT was detected. The Rietveld refinement for the crystal structure analysis demonstrated that slightly Ti-rich PZT, Pb(Zr0.485(1)Ti0.515(1))O3, with a tetragonal crystal system, is synthesized in the 8 h sample. The tetragonality is sufficiently suppressed to resemble a cubic system even at RT, whereas the phase transition temperature (T C) is significantly high. We quantitatively demonstrate that PZT with a higher T C can be synthesized at RT by dry ball milling, despite the smaller spontaneous lattice distortion.
ISSN:0021-4922
1347-4065
DOI:10.35848/1347-4065/ac0c6e