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|Title:||Transformation stress induced metastable tetragonal phase in (93-92) %Pb (Zn1/3/ Nb2/3) O3 - (7-8) % PbTiO3 single crystals|
|Authors:||Chang, W.S. |
|Citation:||Chang, W.S., Lim, L.C., Yang, P., Ku, C.-S., Lee, H.-Y., Tu, C.-S. (2010-08-15). Transformation stress induced metastable tetragonal phase in (93-92) %Pb (Zn1/3/ Nb2/3) O3 - (7-8) % PbTiO3 single crystals. Journal of Applied Physics 108 (4) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.3460804|
|Abstract:||High-resolution synchrotron radiation diffraction results indicate that the room temperature tetragonal (T) phase in (93-92) %Pb (Zn1/3/ Nb 2/3) O3 - (7-8) % PbTiO3 [PZN-(7-8)%PT] single crystals is a metastable phase stabilized by the transformation-cum-cooling stress in the crystal. This is manifested by the "missing" (001) T diffractions when the diffractions were taken from (001) fractured surfaces. The stress relaxation in this case has caused the metastable (001) T domains in the surface layer to transform to the equilibrium rhombohedral phase. Temperature and particle size effects on the metastable domains have been examined and discussed. Based on the present finding, a new PZN-PT phase diagram showing extended rhombohedral+tetragonal region is proposed. © 2010 American Institute of Physics.|
|Source Title:||Journal of Applied Physics|
|Appears in Collections:||Staff Publications|
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