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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Modulation of rectifying behaviour by oxygen contents in La0.5Sr0.5CoO3-delta/0.7 wt% Nb-doped SrTiO3 heterojunctions
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Modulation of rectifying behaviour by oxygen contents in La0.5Sr0.5CoO3-delta/0.7 wt% Nb-doped SrTiO3 heterojunctions

机译：La0.5Sr0.5CoO3-δ/ 0.7 wt％Nb掺杂SrTiO3异质结中氧含量对整流行为的调节

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摘要

Heterojunctions composed of La0.5Sr0.5CoO3-delta and 0.7 wt% Nb-doped SrTiO3 were deposited at different oxygen partial pressures and display opposite rectifying shapes: the junctions fabricated at a lower oxygen pressure show a backward shape and they gradually display a forward shape by tuning up the oxygen partial pressures. The former tends to form degenerate p-n junctions due to oxygen deficiency, which is responsible for the backward rectifying shape. The latter, however, can be viewed as a Schottky-type diode. The oxygen contents for the junctions can be estimated from their x-ray diffraction patterns, and are also confirmed from their resistance and magnetization measurements.
机译：由La0.5Sr0.5CoO3-δ和0.7 wt％的Nb掺杂的SrTiO3组成的异质结在不同的氧分压下沉积并显示相反的整流形状：在较低的氧压下制造的结显示为向后形状，并逐渐显示为正向形状通过调节氧气分压。前者由于缺氧而趋于形成简并的p-n结，这是造成向后整流形状的原因。但是，后者可以看作是肖特基型二极管。接合处的氧含量可以通过其X射线衍射图进行估算，也可以通过其电阻和磁化强度测量得到证实。

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