jap banner
  • Volume/Page
  • Keyword
  • DOI
  • Citation
  • Advanced
   
 
 
 

Flickr Twitter UniPHY Group iResearch App Facebook

Journal of Applied Physics / Volume 111 / Issue 7 / PROCEEDINGS OF THE 56TH ANNUAL CONFERENCE ON MAGNETISM AND MAGNETIC MATERIALS / Soft Magnetic Materials

J. Appl. Phys. 111, 07A306 (2012); http://dx.doi.org/10.1063/1.3670975 (3 pages)

Volume exchange in soft FeCo films of high magnetization

Christoph Mathieu1, Hau-Jian Liu2, Kristen S. Buchanan2, and Venkateswara R. Inturi1

1Seagate Technology, Bloomington, Minnesota 55435, USA
2Colorado State University, Fort Collins, Colorado 80523, USA

View MapView Map

(Received 31 August 2011; accepted 14 October 2011; published online 10 February 2012)

Soft FeCo films of high magnetization are a well known integral part of today’s magnetic recording heads. Values for the volume exchange, an important parameter since it determines exchange length, domain wall width, and energy are, however, available for few compositions of FeCo in spite of the widespread use of these alloys. This paper presents results for volume exchange on Fe65Co35 determined by means of a detailed Brillouin light scattering study, one of a few methods that permit the measurement of exchange. A set of Fe65Co35 films of various thickness values was examined, and volume exchange was found to be 3.5 × 10–6 erg/cm, far higher than what is often assumed.

© 2012 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. EXPERIMENTAL PROCEDURES
  3. DISCUSSION
  4. CONCLUSIONS

KEYWORDS, PACS, and IPC

Keywords

Brillouin spectra, cobalt alloys, exchange interactions (electron), ferromagnetic materials, iron alloys, magnetic domain walls, magnetic recording, magnetic thin films, soft magnetic materials

PACS

  • 75.70.Ak

    Magnetic properties of monolayers and thin films

  • 75.70.Kw

    Domain structure (including magnetic bubbles and vortices)

  • 75.50.Ss

    Magnetic recording materials

  • 75.60.Ej

    Magnetization curves, hysteresis, Barkhausen and related effects

  • 75.50.Bb

    Fe and its alloys

  • 78.35.+c

    Brillouin and Rayleigh scattering; other light scattering

International Patent Classification (IPC)

  • C22C38/00

    Ferrous alloys, e.g. steel alloys

  • C22C19/00

    Alloys based on nickel or cobalt

  • H01F1/00

    Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties

  • H01F1/12

    Of soft-magnetic materials

  • H01F10/00

    Thin magnetic films, e.g. of one-domain structure

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3670975

PUBLICATION DATA

ISSN

0021-8979 (print)  
1089-7550 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    H. S. Jung, W. D. Doyle, J. E. Wittig, J. F. Al-Sharab, and J. Bentley, Appl. Phys. Lett. 81, 2415 (2002)APPLAB000081000013002415000001.

    B. Hillebrands, Rev. Sci. Instrum. 70, 1589 (1999)RSINAK000070000003001589000001.

    G. T. Rado and R. J. Hicken, J. Appl. Phys. 63, 3885 (1988)JAPIAU000063000008003885000001.

    B. Hillebrands, Phys. Rev. B. 41, 530 (1990).

    X. Liu, R. Sooryakumar, C. J. Gutierrez, and G. A. Prinz, J. Appl. Phys. 75, 7021 (1994)JAPIAU000075000010007021000001.

    X. Liu, M. M. Steiner, R. Sooryakumar, G. A. Prinz, R. F. C. Farrow, and G. Harp, Phys. Rev. B 53, 12166 (1996).


Figures (2)

Access to article objects (figures, tables, multimedia) requires a subscription; log in to view available files.
(Access to supplementary files, where available, is free for this journal.)



Close

Google Calendar

ADVERTISEMENT

Your Recent History Recent History Help

Recently Viewed

  1. Volume exchange in soft FeCo films of high magnetization
  2. Magnetic behaviour of Ni0.4Zn0.6Co0.1Fe1.9O4 spinel nano-ferrite
  3. Tuning of magnetization dynamics in sputtered CoFeB thin film by gas pressure
  4. Structural studies of high-Ku metastable CoPt thin films with long-range order
  5. Domain structure and magnetization loss in a toroidal core based on an Fe-based amorphous alloy
Go to AIP Home
Copyright © American Institute of Physics
close