Magnetism modulation of Fe/ZnO heterostructure by interface oxidation

Wen Chin Lin; Po Chun Chang; Cheng Jui Tsai; Tsung Chun Hsieh; Fang Yuh Lo

doi:10.1063/1.4834699

Magnetism modulation of Fe/ZnO heterostructure by interface oxidation

Wen Chin Lin, Po Chun Chang, Cheng Jui Tsai, Tsung Chun Hsieh, Fang Yuh Lo

物理學系

研究成果: 雜誌貢獻 › 期刊論文 › 同行評審

19 引文斯高帕斯（Scopus）

摘要

In this study, the magnetic coercivity (H_c) of Fe/ZnO heterostructure was significantly enhanced by 2-3 times after applying a suitable current. This H_c enhancement originates from the Fe-oxidation at the Fe/ZnO interface induced by direct current heating. Depth-profiling X-ray photoemission spectroscopy analysis confirmed the formation of FeO, Fe₃O₄, and Fe₂O₃ close to the interface region, depending on the Fe thickness and annealing process. This study demonstrates that direct current heating can moderately change the local interface oxidation and modulate the magnetic properties. These results clearly reveal the correlation between magnetism and interface properties in the Fe/ZnO heterostructure and provide valuable information for future applications.

原文	英語
文章編號	212405
期刊	Applied Physics Letters
卷	103
發行號	21
DOIs	https://doi.org/10.1063/1.4834699
出版狀態	已發佈 - 2013 11月 18

ASJC Scopus subject areas

物理與天文學（雜項）

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title = "Magnetism modulation of Fe/ZnO heterostructure by interface oxidation",

abstract = "In this study, the magnetic coercivity (Hc) of Fe/ZnO heterostructure was significantly enhanced by 2-3 times after applying a suitable current. This Hc enhancement originates from the Fe-oxidation at the Fe/ZnO interface induced by direct current heating. Depth-profiling X-ray photoemission spectroscopy analysis confirmed the formation of FeO, Fe3O4, and Fe2O3 close to the interface region, depending on the Fe thickness and annealing process. This study demonstrates that direct current heating can moderately change the local interface oxidation and modulate the magnetic properties. These results clearly reveal the correlation between magnetism and interface properties in the Fe/ZnO heterostructure and provide valuable information for future applications.",

author = "Lin, {Wen Chin} and Chang, {Po Chun} and Tsai, {Cheng Jui} and Hsieh, {Tsung Chun} and Lo, {Fang Yuh}",

note = "Funding Information: The authors acknowledge Professor Wang-Chi Vincent Yeh for valuable discussion and technical support. The XPS spectra were taken at the Nanotechnology Research Center, National Dong Hwa University, Hualien, Taiwan. This work was financially sponsored by National Science Council of Taiwan under Grant Nos. NSC 99-2112-M-003-009-MY3, NSC 99-2923-M-003-001-MY2, NSC 102-2112-M-003-003-MY3, and NSC 100-2112-M-003-007-MY3.",

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AU - Lin, Wen Chin

AU - Chang, Po Chun

AU - Tsai, Cheng Jui

AU - Hsieh, Tsung Chun

AU - Lo, Fang Yuh

N1 - Funding Information: The authors acknowledge Professor Wang-Chi Vincent Yeh for valuable discussion and technical support. The XPS spectra were taken at the Nanotechnology Research Center, National Dong Hwa University, Hualien, Taiwan. This work was financially sponsored by National Science Council of Taiwan under Grant Nos. NSC 99-2112-M-003-009-MY3, NSC 99-2923-M-003-001-MY2, NSC 102-2112-M-003-003-MY3, and NSC 100-2112-M-003-007-MY3.

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N2 - In this study, the magnetic coercivity (Hc) of Fe/ZnO heterostructure was significantly enhanced by 2-3 times after applying a suitable current. This Hc enhancement originates from the Fe-oxidation at the Fe/ZnO interface induced by direct current heating. Depth-profiling X-ray photoemission spectroscopy analysis confirmed the formation of FeO, Fe3O4, and Fe2O3 close to the interface region, depending on the Fe thickness and annealing process. This study demonstrates that direct current heating can moderately change the local interface oxidation and modulate the magnetic properties. These results clearly reveal the correlation between magnetism and interface properties in the Fe/ZnO heterostructure and provide valuable information for future applications.

AB - In this study, the magnetic coercivity (Hc) of Fe/ZnO heterostructure was significantly enhanced by 2-3 times after applying a suitable current. This Hc enhancement originates from the Fe-oxidation at the Fe/ZnO interface induced by direct current heating. Depth-profiling X-ray photoemission spectroscopy analysis confirmed the formation of FeO, Fe3O4, and Fe2O3 close to the interface region, depending on the Fe thickness and annealing process. This study demonstrates that direct current heating can moderately change the local interface oxidation and modulate the magnetic properties. These results clearly reveal the correlation between magnetism and interface properties in the Fe/ZnO heterostructure and provide valuable information for future applications.

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Magnetism modulation of Fe/ZnO heterostructure by interface oxidation

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