TY - JOUR
T1 - The equation of state of PbTiO3 up to 37 GPa
T2 - A synchrotron x-ray powder diffraction study
AU - Sani, A.
AU - Hanfland, M.
AU - Levy, D.
PY - 2002/11/11
Y1 - 2002/11/11
N2 - High-pressure synchroton x-ray powder diffraction patterns were collected using ID09 of ESRF (Grenoble, France) for a powder sample of PbTiO3, placed in a diamond anvil cell. The patterns were collected at room temperature using nitrogen (up to 37 GPa) and methanol-ethanol solution (up to 7 GPa) as pressure-transmitting media. The bulk moduli were calculated for the first time using the Vinet equation of state and they were compared to those of isostructural compounds. The trend of the spontaneous polarization as a function of pressure confirms that the ferroelectric-paraelectric phase transition at 11.2 GPa possesses a second-order character.
AB - High-pressure synchroton x-ray powder diffraction patterns were collected using ID09 of ESRF (Grenoble, France) for a powder sample of PbTiO3, placed in a diamond anvil cell. The patterns were collected at room temperature using nitrogen (up to 37 GPa) and methanol-ethanol solution (up to 7 GPa) as pressure-transmitting media. The bulk moduli were calculated for the first time using the Vinet equation of state and they were compared to those of isostructural compounds. The trend of the spontaneous polarization as a function of pressure confirms that the ferroelectric-paraelectric phase transition at 11.2 GPa possesses a second-order character.
UR - http://www.scopus.com/inward/record.url?scp=0037064896&partnerID=8YFLogxK
U2 - 10.1088/0953-8984/14/44/340
DO - 10.1088/0953-8984/14/44/340
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AN - SCOPUS:0037064896
SN - 0953-8984
VL - 14
SP - 10601
EP - 10604
JO - Journal of Physics Condensed Matter
JF - Journal of Physics Condensed Matter
IS - 44 SPEC ISS.
ER -