Space charge effect in ultrathin ferroelectric films
Space charge effect in ultrathin ferroelectric films
复制标题
超薄铁电薄膜中的空间电荷效应
DOI:
10.1063/1.4704178
复制
发表时间:
2012-04
影响因子:
3.2
通讯作者:
Li, Hui
中科院分区:
文献类型:
--
作者:
Lu, Xiaoyan;Cao, Wenwu;Li, Hui
Space charge influence on the depolarization field becomes pronounced in nano-scale ferroelectric films in static state. We have studied theoretically the ferroelectric, dielectric, and piezoelectric properties of ultrathin ferroelectric films with the consideration of influence from space charges, surface, incomplete screening, and misfit strain. It is found that space charges accumulated near the surface of the film can modify the depolarization field, which results an enhancement of the polarization in ultrathin films and a persisting polarization even below the critical thickness. The singularities of the dielectric constant and piezoelectric coefficient were all being rounded near the critical thickness.
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DOI:
10.1002/pssa.200824434
发表时间:
2009-03
期刊:
physica status solidi (a)
影响因子:
--
作者:
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通讯作者:
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影响因子:
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作者:
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影响因子:
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作者:
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通讯作者:
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影响因子:
3.2
作者:
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Woo, C. H.