Magnetization reversal behavior in cobalt rare-earth thin films

S. S. Malhotra, Z. S. Shan, D. C. Stafford, Sy-Hwang Liou, David J Sellmyer

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Cobalt Rare-Earth (CoR , R = Pr,Sm) thin films on a Cr underlayer have shown promise as future ultra high density magnetic recording media. The activation volume or the magnetic switching volume (V*) is an important consideration for thermal stability and media noise in high density recording media and V* can also provide information about the magnetization reversal behavior in these films. The magnetic switching volume was estimated for the CoPr films with thicknesses from 28 to 639 nm with a Cr underlayer of 80 nm annealed at 500 °C. The measured switching volume ranges from 1. 3 to 1. 7×10-18 cm3. We have also studied the Cr underlayer thickness and temperature effects on the swithcing volume for the CoSm films.

Original languageEnglish (US)
Pages (from-to)4019-4021
Number of pages3
JournalIEEE Transactions on Magnetics
Volume32
Issue number5 PART 1
DOIs
StatePublished - Dec 1 1996

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Magnetization reversal
Cobalt
Rare earths
cobalt
rare earth elements
Thin films
magnetization
magnetic switching
thin films
Magnetic recording
Thermal effects
Thermodynamic stability
Chemical activation
magnetic recording
temperature effects
thermal stability
recording
activation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

Magnetization reversal behavior in cobalt rare-earth thin films. / Malhotra, S. S.; Shan, Z. S.; Stafford, D. C.; Liou, Sy-Hwang; Sellmyer, David J.

In: IEEE Transactions on Magnetics, Vol. 32, No. 5 PART 1, 01.12.1996, p. 4019-4021.

Research output: Contribution to journalArticle

Malhotra, S. S. ; Shan, Z. S. ; Stafford, D. C. ; Liou, Sy-Hwang ; Sellmyer, David J. / Magnetization reversal behavior in cobalt rare-earth thin films. In: IEEE Transactions on Magnetics. 1996 ; Vol. 32, No. 5 PART 1. pp. 4019-4021.
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