Voltage-induced reversible changes in the magnetic coercivity of Fe/ZnO heterostructures

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

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12 Citations (Scopus)

Abstract

In this study, the magnetic coercivity (H c ) of Fe/ZnO heterostructure monotonically decreased as voltage was applied. The reversibility of this effect was demonstrated by cyclically changing the bias voltage from 0 to 6-9 V; the H c decreased 15%-20%. The H c value exhibited the same variation whether the applied voltage was positive or negative. As thick Fe-oxide gradually formed at the interface by using direct current heating, the H c increased and the Fe/ZnO heterostructure demonstrated a similar voltage-induced reduction of H c .

Original languageEnglish
Article number062411
JournalApplied Physics Letters
Volume104
Issue number6
DOIs
Publication statusPublished - 2014 Oct 2

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coercivity
electric potential
direct current
heating
oxides

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Voltage-induced reversible changes in the magnetic coercivity of Fe/ZnO heterostructures. / Lin, Wen-Chin; Chang, Po Chun; Tsai, Cheng Jui; Shieh, Tsung Chun; Lo, Fang-Yuh.

In: Applied Physics Letters, Vol. 104, No. 6, 062411, 02.10.2014.

Research output: Contribution to journalArticle

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AB - In this study, the magnetic coercivity (H c ) of Fe/ZnO heterostructure monotonically decreased as voltage was applied. The reversibility of this effect was demonstrated by cyclically changing the bias voltage from 0 to 6-9 V; the H c decreased 15%-20%. The H c value exhibited the same variation whether the applied voltage was positive or negative. As thick Fe-oxide gradually formed at the interface by using direct current heating, the H c increased and the Fe/ZnO heterostructure demonstrated a similar voltage-induced reduction of H c .

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