TY - JOUR
T1 - Ferroelectric and ferroelastic domain wall motion in unconstrained Pb(Zr,Ti)O3 microtubes and thin films
AU - Bharadwaja, Srowthi S.N.
AU - Moses, Paul J.
AU - Trolier-McKinstry, Susan
AU - Mayer, Theresa S.
AU - Bettotti, Paolo
AU - Pavesi, Lorenzo
N1 - Funding Information:
Manuscript received september 21, 2009; accepted december 28, 2009. This work was supported by the penn state Materials research Institute, the commonwealth of pennsylvania, and by nsF through the Material research science and Engineering center program (dMr-0080019 and dMr-0213623). The devices were fabricated at the psU site of the nsF nnIn under grant #0335765. s. s. n. Bharadwaja, p. J. Moses, and s. Trolier-McKinstry are with the Materials research Institute, The pennsylvania state University, University park, pa (e-mail: [email protected]).
PY - 2010/4
Y1 - 2010/4
N2 - Ferroelectric polarization switching of high aspect ratio (>80:1) PbZr0.52Ti00.48O3 (PZT) microtubes with a wall thickness of ∼200 nm was investigated. A charge-based technique was used to assess the dielectric and ferroelectric properties of individual mechanically-unconstrained PZT microtubes with interdigitated electrodes. An enhancement in the degree of ferroelastic (non-180°) domain wall motion was observed in the tubes relative to films of similar thickness on rigid substrates. The dielectric response of the tubes showed a Rayleigh-like ac field dependence over a wide temperature range; the extent of the extrinsic contribution to the dielectric response dropped as the temperature approached 10K, but remained finite. This work demonstrates a general methodology for directly electrically addressing small, unconstrained ferroelectric devices, extending the range of driving fields and temperatures over which these materials can be probed.
AB - Ferroelectric polarization switching of high aspect ratio (>80:1) PbZr0.52Ti00.48O3 (PZT) microtubes with a wall thickness of ∼200 nm was investigated. A charge-based technique was used to assess the dielectric and ferroelectric properties of individual mechanically-unconstrained PZT microtubes with interdigitated electrodes. An enhancement in the degree of ferroelastic (non-180°) domain wall motion was observed in the tubes relative to films of similar thickness on rigid substrates. The dielectric response of the tubes showed a Rayleigh-like ac field dependence over a wide temperature range; the extent of the extrinsic contribution to the dielectric response dropped as the temperature approached 10K, but remained finite. This work demonstrates a general methodology for directly electrically addressing small, unconstrained ferroelectric devices, extending the range of driving fields and temperatures over which these materials can be probed.
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U2 - 10.1109/TUFFC.2010.1483
DO - 10.1109/TUFFC.2010.1483
M3 - Article
C2 - 20378441
AN - SCOPUS:77951080741
SN - 0885-3010
VL - 57
SP - 792
EP - 800
JO - IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
JF - IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
IS - 4
M1 - 5442873
ER -