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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14 Citations (Scopus)

Abstract

In this study, the magnetic coercivity (Hc) 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 Hc decreased 15%-20%. The Hc 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 Hc increased and the Fe/ZnO heterostructure demonstrated a similar voltage-induced reduction of Hc.

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

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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