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

Journal Article


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. © 2009 American Institute of Physics.

Publication Date


  • 2009

Citation


  • Bernal, A., Zhang, S., & Bassiri-Gharb, N. (2009). Effects of orientation and composition on the extrinsic contributions to the dielectric response of relaxor-ferroelectric single crystals. Applied Physics Letters, 95(14). doi:10.1063/1.3245316

Scopus Eid


  • 2-s2.0-70349929061

Volume


  • 95

Issue


  • 14

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. © 2009 American Institute of Physics.

Publication Date


  • 2009

Citation


  • Bernal, A., Zhang, S., & Bassiri-Gharb, N. (2009). Effects of orientation and composition on the extrinsic contributions to the dielectric response of relaxor-ferroelectric single crystals. Applied Physics Letters, 95(14). doi:10.1063/1.3245316

Scopus Eid


  • 2-s2.0-70349929061

Volume


  • 95

Issue


  • 14