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Browsing by Author "Yoon, S."

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Evidence for monoclinic crystal structure and negative thermal expansion below magnetic transition temperature in Pb (Fe12 Nb12) O3

Singh, S.P.; Pandey, D.; Yoon, S.; Baik, S.; Shin, N. (2007)

The existing controversy about the room temperature structure of multiferroic Pb (Fe12 Nb12) O3 is settled using synchrotron powder x-ray diffraction data. Results of Rietveld refinements in the temperature range of 300-12 ...
High-resolution synchrotron x-ray diffraction study of Zr-rich compositions of Pb ZrxTi1-x)O3(0.525≤x≤0.60): Evidence for the absence of the rhombohedral phase

Singh, A.K.; Pandey, D.; Yoon, S.; Baik, S.; Shin, N. (2007)

Results of Rietveld analysis of the synchrotron x-ray diffraction data on Pb (Zrx Ti1-x) O3 (PZT) for 0.525≤x≤0.60 are presented to show the absence of rhombohedral phase on the Zr-rich side of the morphotropic phase ...
Origin of high piezoelectric response of Pb(ZrxTi 1-x)O3 at the morphotropic phase boundary: Role of elastic instability

Singh, A.K.; Mishra, S.K.; Ragini; Pandey, D.; Yoon, S.; Baik, S.; Shin, N. (American Institute of Physics, 2008)

Temperature dependent structural changes in a nearly pure monoclinic phase composition (x=0.525) of Pb (Zrx Ti1-x) O3 (PZT) have been investigated using Rietveld analysis of high-resolution synchrotron powder x-ray diffraction ...
Resolving the characteristics of morphotropic phase boundary in the (1-x) Pb (Fe1/2 Nb1/2) O3 -x PbTiO3 system: A combined dielectric and synchrotron x-ray diffraction study

Singh, S.P.; Pandey, D.; Yoon, S.; Baik, S.; Shin, N. (2008)

Frequency dependent dielectric studies on the mixed system (1-x) Pb (Fe1/2 Nb1/2) O3 -x PbTiO3 reveal contributions from the electrodes, grain boundaries, and grains. It is shown that the intrinsic value of the dielectric ...
Short- and medium-range structure of multiferroic Pb(Fe 1/2Nb1/2)O3 studied using neutron total scattering analysis

Jeong, I.-K.; Ahn, J.S.; Kim, B.G.; Yoon, S.; Singh, S.P.; Pandey, D. (2011-02-11)

We performed neutron total scattering analysis on multiferroic Pb(Fe 1/2Nb1/2)O3 (PFN) from 300 K to 75 K and present the evolution of short- and medium-range atomic structures across the antiferromagnetic transition, ...

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