Lam, K.H. and Chan, H.L.W. (2004) Polarization response of proton irradiated 0.9Pb(Mg1/3Nb2/3)O-3-0.1PbTiO(3)/polyvinylidene fluoride-trifluoroethylene 0-3 composites. Journal of Applied Physics, 96(10), pp. 5898-5902. (doi: 10.1063/1.1803631)
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Abstract
Polyvinylidene fluoride-trifluoroethylene [P(VDF-TrFE) 70∕30mol%] copolymer can be transformed from a normal ferroelectric to a relaxor ferroelectric material after proton irradiation. The phase transition peak broadens and shifts towards lower temperature as the measurement frequency decreases. The occurrence of a slim polarization-electric field loop is another evidence of the effect of proton irradiation. In the present study, 0-3 composites are fabricated by incorporating 0.9Pb(Mg1∕3Nb2∕3)O3‐0.1PbTiO3 ceramic powder into a P(VDF-TrFE) 70∕30mol% copolymer matrix. 0.9PMN-0.1PT ceramic is a relaxor ferroelectric with high dielectric permittivity. It was found that the relative permittivity of an unirradiated PMN-PT∕P(VDF-TrFE) 0-3 composite increases with increasing ceramic volume fraction. With a dosage of 1000kGy (where 1Gy=100rad ), the composite exhibits a broad peak in the relative permittivity. In the unirradiated composites, the remnant polarization increases gradually with PMN-PT volume fraction. After irradiation, the remnant polarization of the composites with different PMN-PT volume fractions is similar to that of the irradiated copolymer. Energy storage capabilities of the samples were evaluated which showed that proton irradiated composites have a potential for energy storage applications.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Lam, Dr Koko |
| Authors: | Lam, K.H., and Chan, H.L.W. |
| College/School: | College of Science and Engineering > School of Engineering > Systems Power and Energy |
| Journal Name: | Journal of Applied Physics |
| Publisher: | American Institute of Physics |
| ISSN: | 0021-8979 |
| ISSN (Online): | 1089-7550 |
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