TY - JOUR
T1 - Systematic study of the ferroelectric properties of Pb (Zr0.5 Ti0.5) O3 nanowires
AU - Hong, Jiawang
AU - Fang, Daining
PY - 2008
Y1 - 2008
N2 - The ferroelectric properties of Pb (Zr0.5 Ti0.5) O3 (PZT) nanowires are investigated using Landau-Ginzburg-Devonshire theory, taking account into the nanowire size, polarization gradient, temperature, and axis stress. It is shown that the Curie temperature, coercive electric field, remnant polarization, dielectric permittivity, and piezoelectric coefficient are all size dependent. It is revealed that the ferroelectric properties disappear below a critical diameter, which depends on the temperature, but they can be recovered under an appropriate axis tension. Our results further show that an unusual thermal fluctuation exists in PZT nanowires with small diameter.
AB - The ferroelectric properties of Pb (Zr0.5 Ti0.5) O3 (PZT) nanowires are investigated using Landau-Ginzburg-Devonshire theory, taking account into the nanowire size, polarization gradient, temperature, and axis stress. It is shown that the Curie temperature, coercive electric field, remnant polarization, dielectric permittivity, and piezoelectric coefficient are all size dependent. It is revealed that the ferroelectric properties disappear below a critical diameter, which depends on the temperature, but they can be recovered under an appropriate axis tension. Our results further show that an unusual thermal fluctuation exists in PZT nanowires with small diameter.
UR - http://www.scopus.com/inward/record.url?scp=54749148350&partnerID=8YFLogxK
U2 - 10.1063/1.2982090
DO - 10.1063/1.2982090
M3 - Article
AN - SCOPUS:54749148350
SN - 0021-8979
VL - 104
JO - Journal of Applied Physics
JF - Journal of Applied Physics
IS - 6
M1 - 064118
ER -