Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1526476 | Materials Chemistry and Physics | 2009 | 5 Pages |
Abstract
Isopressing a PbZr0.3Ti0.7O3 sol–gel coating prior to thermally induced crystallisation leads to increased remanent polarisation (Pr) values for optimum compaction pressures of ∼125 MPa. The value of Pr increases from 25 μC cm−2 for a single layer 0.3 μm porous film prepared in the normal manner, to 34 μC cm−2 for an equivalent 0.2 μm dense film. Compaction pressures >135 MPa lead to little further increase in film density, but Pr decreases to values below those of non-pressed porous samples. The trends in polarisation are attributed to the balance between the beneficial effects of decreased porosity and the detrimental effects of increased strain levels in the films.
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Authors
Anirban Chowdhury, Mikael A. Khan, Craig James, Steven J. Milne,