Soft magnetic properties of conetic co-sputtered with aluminum

Jongkoo Lim, Jangyup Son, Jongill Hong

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Conetic (Ni77Fe14Cu5Mo4) and conetic co-sputtered with aluminum thin films are prepared and their soft magnetic properties are examined in order to investigate their eligibility for application in the free layer of spin valve-based magnetic sensors. As the aluminum concentration increases, the coercivity and anisotropy field of the film is reduced by more than 60%, which indicates that the soft magnetism is significantly improved. The thermal treatment further enhances the soft magnetic properties. This improvement can be attributed to the enhanced random anisotropy that results from the reduction in the grain size, which is caused by the incorporation of the aluminum into the conetic. These encouraging results imply that the conetic co-sputtered with Al is sufficiently magnetically soft to be applied in spin valve-based sensors.

Original languageEnglish
Pages (from-to)551-554
Number of pages4
JournalMetals and Materials International
Volume20
Issue number3
DOIs
Publication statusPublished - 2014 Jan 1

Fingerprint

Aluminum
Magnetic properties
magnetic properties
aluminum
Anisotropy
Magnetic sensors
anisotropy
sensors
Magnetism
Coercive force
coercivity
grain size
Heat treatment
Thin films
Sensors
thin films

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

Cite this

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abstract = "Conetic (Ni77Fe14Cu5Mo4) and conetic co-sputtered with aluminum thin films are prepared and their soft magnetic properties are examined in order to investigate their eligibility for application in the free layer of spin valve-based magnetic sensors. As the aluminum concentration increases, the coercivity and anisotropy field of the film is reduced by more than 60{\%}, which indicates that the soft magnetism is significantly improved. The thermal treatment further enhances the soft magnetic properties. This improvement can be attributed to the enhanced random anisotropy that results from the reduction in the grain size, which is caused by the incorporation of the aluminum into the conetic. These encouraging results imply that the conetic co-sputtered with Al is sufficiently magnetically soft to be applied in spin valve-based sensors.",
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Soft magnetic properties of conetic co-sputtered with aluminum. / Lim, Jongkoo; Son, Jangyup; Hong, Jongill.

In: Metals and Materials International, Vol. 20, No. 3, 01.01.2014, p. 551-554.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Soft magnetic properties of conetic co-sputtered with aluminum

AU - Lim, Jongkoo

AU - Son, Jangyup

AU - Hong, Jongill

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AB - Conetic (Ni77Fe14Cu5Mo4) and conetic co-sputtered with aluminum thin films are prepared and their soft magnetic properties are examined in order to investigate their eligibility for application in the free layer of spin valve-based magnetic sensors. As the aluminum concentration increases, the coercivity and anisotropy field of the film is reduced by more than 60%, which indicates that the soft magnetism is significantly improved. The thermal treatment further enhances the soft magnetic properties. This improvement can be attributed to the enhanced random anisotropy that results from the reduction in the grain size, which is caused by the incorporation of the aluminum into the conetic. These encouraging results imply that the conetic co-sputtered with Al is sufficiently magnetically soft to be applied in spin valve-based sensors.

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