硅扩散MgO势垒磁隧道结的磁阻比

IF 2.3 4区物理与天体物理 Q3 PHYSICS, APPLIED

Applied Physics Express Pub Date : 2023-11-10 DOI:10.35848/1882-0786/ad0ba1

Tatsuki Watanabe, Minori Goto, Yuichiro Ando, Tsubasa Watakabe, Hikaru NOMURA, Yoshishige SUZUKI

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引用次数: 0

摘要

摘要:我们展示了一种由Fe/MgO-Si-MgO/Fe组成的磁性隧道结(MTJ)。在室温和700℃下沉积Si层;在700℃沉积时，Si扩散到MgO层中。在700℃沉积硅的MTJ在t Si = 0.19和1.3 nm处的MR比分别高达38.7和2.9%。低温测量表明，含扩散硅和不含扩散硅的MTJs的磁流变比和电阻对温度的依赖性有显著差异。这种行为证实了Si-MgO通道在MTJ中作为杂质半导体。

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Magnetoresistance ratio in magnetic tunnel junction with silicon diffused MgO barrier

Abstract We demonstrated a magnetic tunnel junction (MTJ) consisting of Fe/MgO-Si-MgO/Fe. Si layer was deposited at room temperature and at 700 ℃; when deposited at 700 ℃, Si diffused into the MgO layer. The MTJ with silicon deposited at 700 ℃ attained high MR ratios of up to 38.7 and 2.9% at t Si = 0.19 and 1.3 nm, respectively. Low-temperature measurements established that the temperature dependence of the MR ratio and resistance between MTJs with and without diffused silicon are significantly different. This behavior confirms that the Si-MgO channel acts as an impurity semiconductor in the MTJ.

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来源期刊

Applied Physics Express 物理-物理：应用

CiteScore

4.80

自引率

8.70%

发文量

310

审稿时长

1.2 months

期刊介绍： Applied Physics Express (APEX) is a letters journal devoted solely to rapid dissemination of up-to-date and concise reports on new findings in applied physics. The motto of APEX is high scientific quality and prompt publication. APEX is a sister journal of the Japanese Journal of Applied Physics (JJAP) and is published by IOP Publishing Ltd on behalf of the Japan Society of Applied Physics (JSAP).