Pseudoproper ferroelectricity in thin films

A. Cano; rnA. P. Levanyuk

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Pseudoproper ferroelectricity in thin films

机译：薄膜中的伪适当铁电

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We study ferroelectricity in thin films of pseudoproper ferroelectrics such as the so-called spiral multiferroics.rnWe find that this type of ferroelectricity stands better against depolarizing fields than conventional one. Its single-domain state can be easily preserved by metallic electrodes even in ultrathin films. In fact, single-domain ferroelectricty can be generated as a metastable state in the absence of electrodes. We also find a regime of small thickness where unscreened films develop unusual multi-domain states whose properties are sensitive to nonelectrostatic boundary conditions.

机译：我们研究了伪适当铁电薄膜（例如所谓的螺旋多铁磁）中的铁电。我们发现，这种类型的铁电在抗去极化场方面比常规铁电更好。即使在超薄膜中，其单畴状态也可以通过金属电极轻松保持。实际上，在没有电极的情况下，单畴铁电可以生成为亚稳态。我们还发现了一种小厚度的方案，其中未屏蔽的薄膜会形成不寻常的多畴态，其性质对非静电边界条件敏感。

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《Physical review》 |2010年第17期|P.172105.1-172105.4|共4页
作者
A. Cano; rnA. P. Levanyuk;
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European Synchrotron Radiation Facility, 6 rue Jules Horowitz, BP 220, 38043 Grenoble, France;

rnEuropean Synchrotron Radiation Facility, 6 rue Jules Horowitz, BP 220, 38043 Grenoble, France Departamento de Fisica de la Materia Condensada, C-III, Universidad Autonoma de Madrid, E-28049 Madrid, Spain;

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ferroelectricity and antiferroelectricity;

机译：铁电和反铁电;

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Pseudoproper ferroelectricity in thin films

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