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

Department of Physics

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

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.

Original language	English
Article number	212405
Journal	Applied Physics Letters
Volume	103
Issue number	21
DOIs	https://doi.org/10.1063/1.4834699
Publication status	Published - 2013 Nov 18

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Access to Document

10.1063/1.4834699

Cite this

@article{0df6b9d25f8840988d07673cd40b9d54,

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.",

year = "2013",

month = nov,

day = "18",

doi = "10.1063/1.4834699",

language = "English",

volume = "103",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics Publising LLC",

number = "21",

}

TY - JOUR

T1 - Magnetism modulation of Fe/ZnO heterostructure by interface oxidation

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.

PY - 2013/11/18

Y1 - 2013/11/18

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.

UR - http://www.scopus.com/inward/record.url?scp=84888416828&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84888416828&partnerID=8YFLogxK

U2 - 10.1063/1.4834699

DO - 10.1063/1.4834699

M3 - Article

AN - SCOPUS:84888416828

SN - 0003-6951

VL - 103

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 21

M1 - 212405

ER -

Magnetism modulation of Fe/ZnO heterostructure by interface oxidation

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this