Asymmetric switching behavior of Ni/Pb1.1(Zr0.3Ti0.7)O3/Pt thin films
| Autor: | Weiguo Liu, Weiguang Zhu, Jongsoo Ko |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Materials science
Condensed matter physics Mechanical Engineering Mineralogy chemistry.chemical_element Condensed Matter Physics Ferroelectricity Pyroelectricity Hysteresis chemistry Transition metal Mechanics of Materials Electrode General Materials Science Thin film Polarization (electrochemistry) Platinum |
| Zdroj: | Materials Letters. 49:122-126 |
| ISSN: | 0167-577X |
| DOI: | 10.1016/s0167-577x(00)00354-2 |
| Popis: | An asymmetric behavior of P–E response was observed in Ni/Pb 1.1 (Zr 0.3 Ti 0.7 )O 3 /Pt multilayer thin films where Ni was used as top electrode. This interesting phenomenon was investigated by comparative analysis of the hysteresis loops and dynamic pyroelectric responses. The PZT thin films were prepared under the same conditions but different Ni and Pt top electrodes were used in the hysteresis loop measurement, and the Pt was used as the common bottom electrode. It is believed that this asymmetric behavior in hysteresis loop is originated from the strong domain pinning near the top Ni electrode. Dynamic pyroelectric response to 633 nm radiation of the Ni/Pb 1.1 (Zr 0.3 Ti 0.7 )O 3 /Pt thin films with polarization up and down was carried out. Higher dynamic pyroelectric response was observed in the positively poled film, in which the direction of the polarization was from the top to bottom electrode. It provides further evidence that the domain pinning near the top electrode dominates the asymmetric switching behavior. |
| Databáze: | OpenAIRE |
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