Effects of orientation and composition on the extrinsic contributions to the dielectric response of relaxor-ferroelectric single crystals

Ashley Bernal; Shujun Zhang; Nazanin Bassiri-Gharb

doi:10.1063/1.3245316

Effects of orientation and composition on the extrinsic contributions to the dielectric response of relaxor-ferroelectric single crystals

Ashley Bernal, Shujun Zhang, Nazanin Bassiri-Gharb

Materials Research Institute (MRI)

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

The dielectric response of (1-x) Pb (Zn1/3 Nb2/3) O³ - ^{x PbTiO3} (PZN-^x%PT,4.5x12) single crystals is reported for ac field amplitudes up to ∼2 kV/cm at 1 kHz. The Rayleigh law is used to study the dielectric nonlinear response. It is found that the extrinsic contributions are extremely anisotropic. Rhombohedral crystals poled along [001] C showed enhanced extrinsic contributions to their dielectric response with respect to those poled along [111] C, while in tetragonal crystals, the enhancement was observed for poling along [111] C rather than along [001] C. This is attributed to "domain engineering" or higher domain wall concentrations in ferroelectric crystals poled along nonpolar axes.

Original language	English (US)
Article number	142911
Journal	Applied Physics Letters
Volume	95
Issue number	14
DOIs	https://doi.org/10.1063/1.3245316
State	Published - 2009

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.3245316

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title = "Effects of orientation and composition on the extrinsic contributions to the dielectric response of relaxor-ferroelectric single crystals",

abstract = "The dielectric response of (1-x) Pb (Zn1/3 Nb2/3) O3 - x PbTiO3 (PZN-x%PT,4.5x12) single crystals is reported for ac field amplitudes up to ∼2 kV/cm at 1 kHz. The Rayleigh law is used to study the dielectric nonlinear response. It is found that the extrinsic contributions are extremely anisotropic. Rhombohedral crystals poled along [001] C showed enhanced extrinsic contributions to their dielectric response with respect to those poled along [111] C, while in tetragonal crystals, the enhancement was observed for poling along [111] C rather than along [001] C. This is attributed to {"}domain engineering{"} or higher domain wall concentrations in ferroelectric crystals poled along nonpolar axes.",

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journal = "Applied Physics Letters",

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T1 - Effects of orientation and composition on the extrinsic contributions to the dielectric response of relaxor-ferroelectric single crystals

AU - Bernal, Ashley

AU - Zhang, Shujun

AU - Bassiri-Gharb, Nazanin

PY - 2009

Y1 - 2009

N2 - The dielectric response of (1-x) Pb (Zn1/3 Nb2/3) O3 - x PbTiO3 (PZN-x%PT,4.5x12) single crystals is reported for ac field amplitudes up to ∼2 kV/cm at 1 kHz. The Rayleigh law is used to study the dielectric nonlinear response. It is found that the extrinsic contributions are extremely anisotropic. Rhombohedral crystals poled along [001] C showed enhanced extrinsic contributions to their dielectric response with respect to those poled along [111] C, while in tetragonal crystals, the enhancement was observed for poling along [111] C rather than along [001] C. This is attributed to "domain engineering" or higher domain wall concentrations in ferroelectric crystals poled along nonpolar axes.

AB - The dielectric response of (1-x) Pb (Zn1/3 Nb2/3) O3 - x PbTiO3 (PZN-x%PT,4.5x12) single crystals is reported for ac field amplitudes up to ∼2 kV/cm at 1 kHz. The Rayleigh law is used to study the dielectric nonlinear response. It is found that the extrinsic contributions are extremely anisotropic. Rhombohedral crystals poled along [001] C showed enhanced extrinsic contributions to their dielectric response with respect to those poled along [111] C, while in tetragonal crystals, the enhancement was observed for poling along [111] C rather than along [001] C. This is attributed to "domain engineering" or higher domain wall concentrations in ferroelectric crystals poled along nonpolar axes.

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Effects of orientation and composition on the extrinsic contributions to the dielectric response of relaxor-ferroelectric single crystals

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