Antiferroelectricity induced by electric field in NaNbO3-based lead-free ceramics
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2014-01-01
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Tan, Xiaoli
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Materials Science and Engineering
Materials engineers create new materials and improve existing materials. Everything is limited by the materials that are used to produce it. Materials engineers understand the relationship between the properties of a material and its internal structure — from the macro level down to the atomic level. The better the materials, the better the end result — it’s as simple as that.
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Electric fields are known to favor a ferroelectric phase with parallel electric dipoles over an antiferroelectric phase. We demonstrate in this Letter that electric fields can induce an antiferroelectric phase out of a ferroelectric phase in a NaNbO3-based lead-free polycrystalline ceramic. Such an unlikely ferroelectric-to-antiferroelectric phase transition occurs at fields with a reversed polarity and competes with the ferroelectric polarization reversal process.
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This article is from Applied Physics Letters104 (2014): 052903, doi: 10.1063/1.4863850. Posted with permission.
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Wed Jan 01 00:00:00 UTC 2014