Pulsed Electrodeposition of Nanocrystalline CoNiFe Soft Magnetic Thin Films

Takuya Nakanishi, Masaki Ozaki, Hyo Seung Nam, Tokihiko Yokoshima, Tetsuya Osaka

Research output: Contribution to journalArticle

49 Citations (Scopus)

Abstract

A pulsed electrodeposition method was applied to the preparation of soft magnetic CoNiFe films in the compositional region corresponding to the phase boundary between face-centered cubic (fcc) and body-centered cubic (bcc) structures. Crystalline grain size was found to be almost the same, smaller than 10 nm, and independent of the duty cycle which is the ratio of the pulse-on time to the pulse-on plus pulse-off period. Depending on the operating conditions, the ratio of bcc to fcc varied. Current efficiency decreased with decreasing duty cycle and pulse current density. The intensity ratio of bcc(110) to fcc(111) X-ray diffraction peaks showed a maximum at the operating conditions in which the transition from kinetic to mass-transfer controlled deposition occurred with only a slight increase of Fe content (approximately 1 atom %). Magnetic properties were suggested to be controllable by adjusting the bcc-fcc ratio using pulsed electrodeposition.

Original languageEnglish
JournalJournal of the Electrochemical Society
Volume148
Issue number9
DOIs
Publication statusPublished - 2001 Sep

Fingerprint

Magnetic thin films
Electrodeposition
electrodeposition
Magnetic films
Phase boundaries
thin films
pulses
Magnetic properties
Current density
Mass transfer
Crystalline materials
X ray diffraction
Atoms
cycles
Kinetics
magnetic films
mass transfer
grain size
adjusting
current density

ASJC Scopus subject areas

  • Electrochemistry
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this

Pulsed Electrodeposition of Nanocrystalline CoNiFe Soft Magnetic Thin Films. / Nakanishi, Takuya; Ozaki, Masaki; Nam, Hyo Seung; Yokoshima, Tokihiko; Osaka, Tetsuya.

In: Journal of the Electrochemical Society, Vol. 148, No. 9, 09.2001.

Research output: Contribution to journalArticle

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