Modulation of magnetic coercivity in Ni thin films by reversible control of strain

Wen-Chin Lin, Chia Wei Huang, Yi Chieh Ting, Fang-Yuh Lo, Ming Yau Chern

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

In this study, we demonstrated the magnetoelectric control of magnetic thin films. (111)-textured Pd/Ni/Pd thin films were prepared on mica/lead zirconium titanate (PZT) substrates for the investigation. The reversible modulation of magnetic coercivity in Ni films was observed through the electric-voltage-controlled strain variation from the PZT substrate. For 14 nm Ni film, the applied electric field of ±350 V/m led to ±0.5% strain variation of PZT, which was transferred to ±0.4% strain variation of Pd/Ni/Pd thin films on mica, and resulted in ±17 Oe (±5% of the preliminary magnetic coercivity). The reversible modulation of magnetic coercivity is supposed to be caused by the voltage-controlled strain through the magneto-elastic effect.

Original languageEnglish
Pages (from-to)446-450
Number of pages5
JournalJournal of Magnetism and Magnetic Materials
Volume381
DOIs
Publication statusPublished - 2015 May 1

Fingerprint

Coercive force
coercivity
Modulation
mica
modulation
Thin films
Mica
thin films
electric potential
Magnetic thin films
Electric potential
Substrates
Zirconium
electric fields
Lead
Electric fields

Keywords

  • Magneto-elastic anisotropy
  • Strain
  • Surface magnetism
  • Thin film

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Modulation of magnetic coercivity in Ni thin films by reversible control of strain. / Lin, Wen-Chin; Huang, Chia Wei; Ting, Yi Chieh; Lo, Fang-Yuh; Chern, Ming Yau.

In: Journal of Magnetism and Magnetic Materials, Vol. 381, 01.05.2015, p. 446-450.

Research output: Contribution to journalArticle

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AU - Chern, Ming Yau

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AB - In this study, we demonstrated the magnetoelectric control of magnetic thin films. (111)-textured Pd/Ni/Pd thin films were prepared on mica/lead zirconium titanate (PZT) substrates for the investigation. The reversible modulation of magnetic coercivity in Ni films was observed through the electric-voltage-controlled strain variation from the PZT substrate. For 14 nm Ni film, the applied electric field of ±350 V/m led to ±0.5% strain variation of PZT, which was transferred to ±0.4% strain variation of Pd/Ni/Pd thin films on mica, and resulted in ±17 Oe (±5% of the preliminary magnetic coercivity). The reversible modulation of magnetic coercivity is supposed to be caused by the voltage-controlled strain through the magneto-elastic effect.

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