TY - GEN
T1 - Scaling effects of ferroelectric nanoparticles studied by synchrotron radiation X-ray diffraction
AU - Kano, Jun
AU - Karaki, Tomoaki
AU - Adachi, Masatoshi
AU - Kojima, Seiji
PY - 2009/12/1
Y1 - 2009/12/1
N2 - High-resolution synchrotron X-ray powder diffraction measurement with multiple-detector system has been performed to investigate the scaling effect in ferroelectric PbxSr1-xTiO3 nanoparticles at ambient temperature with various sizes ranging from 10 to 200 nm and various compositions. The peak profiles of the 200 reflections show a large broadening and asymmetry for all particle sizes with decreasing particle size, implying the formation of gradational lattice structure induced by inhomogeneous strain. On the other hand, asymmetric and wide peak profiles of the 200 reflections become a wide symmetry with decreasing x. The crystal structure of PST at ambient temperature were indexed in a tetragonal system for x > 0.4 and in a cubic one for x ≤0.4. This result indicates that a tetragonal-cubic phase boundary exists around x∼ 0.4.
AB - High-resolution synchrotron X-ray powder diffraction measurement with multiple-detector system has been performed to investigate the scaling effect in ferroelectric PbxSr1-xTiO3 nanoparticles at ambient temperature with various sizes ranging from 10 to 200 nm and various compositions. The peak profiles of the 200 reflections show a large broadening and asymmetry for all particle sizes with decreasing particle size, implying the formation of gradational lattice structure induced by inhomogeneous strain. On the other hand, asymmetric and wide peak profiles of the 200 reflections become a wide symmetry with decreasing x. The crystal structure of PST at ambient temperature were indexed in a tetragonal system for x > 0.4 and in a cubic one for x ≤0.4. This result indicates that a tetragonal-cubic phase boundary exists around x∼ 0.4.
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U2 - 10.1109/MHS.2009.5352105
DO - 10.1109/MHS.2009.5352105
M3 - Conference contribution
AN - SCOPUS:77950933483
SN - 9781424450954
T3 - 20th Anniversary MHS 2009 and Micro-Nano Global COE - 2009 International Symposium on Micro-NanoMechatronics and Human Science
SP - 104
EP - 107
BT - 20th Anniversary MHS 2009 and Micro-Nano Global COE - 2009 International Symposium on Micro-NanoMechatronics and Human Science
T2 - 20th Anniversary MHS 2009 and Micro-Nano Global COE - 2009 International Symposium on Micro-NanoMechatronics and Human Science
Y2 - 8 November 2009 through 11 November 2009
ER -