APL Nameplate
  • Volume/Page
  • Keyword
  • DOI
  • Citation
  • Advanced
   
 
 
 

Flickr Twitter UniPHY Group iResearch App Facebook

Applied Physics Letters / Volume 96 / Issue 22 / MAGNETISM AND SUPERCONDUCTIVITY

Appl. Phys. Lett. 96, 222503 (2010); http://dx.doi.org/10.1063/1.3442480 (3 pages)

Enhanced exchange anisotropy in IrMn/CoFeB systems and its correlation with uncompensated interfacial spins

Yuqing Du1, Genhua Pan1, Roy Moate1, Hendrik Ohldag2, Andras Kovacs3, and Amit Kohn3

1Wolfson Nanotechnology Laboratory, Faculty of Science and Technology, University of Plymouth, Plymouth, Devon PL4 8AA, United Kingdom
2Stanford Synchrotron Radiation Laboratory, P.O. Box 20450, Stanford, California 94309, USA
3Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, United Kingdom

View MapView Map

(Received 18 December 2009; accepted 5 May 2010; published online 1 June 2010)

Bottom pinned exchange bias systems of IrMn/CoFe and IrMn/CoFeB on CoFe seed layers were studied. Enhanced exchange anisotropy has been observed for IrMn/CoFeB samples annealed at 350 °C. The ferromagnetic and antiferromagnetic layers of both samples are polycrystalline and textured {110} for the CoFe and CoFeB, and {111} for IrMn. Results demonstrated that the enhanced exchange anisotropy in the IrMn/CoFeB system is closely associated with the increased uncompensated interfacial spins as evidenced by the enhanced Mn x-ray magnetic circular dichroism (XMCD) signal strength. A quantitative correlation between the Mn XMCD signal and the exchange anisotropy constant Jk was observed.

© 2010 American Institute of Physics

RELATED DATABASES

To view database links for this article, you need to log in.

KEYWORDS and PACS

Keywords

annealing, antiferromagnetic materials, boron alloys, cobalt alloys, ferromagnetic materials, interface magnetism, iridium alloys, iron alloys, magnetic anisotropy, magnetic circular dichroism, manganese alloys

PACS

  • 75.70.Cn

    Magnetic properties of interfaces (multilayers, superlattices, heterostructures)

  • 78.20.Ls

    Magneto-optical effects

  • 81.40.Gh

    Other heat and thermomechanical treatments

  • 75.50.Ee

    Antiferromagnetics

  • 75.30.Gw

    Magnetic anisotropy

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3442480

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (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. Ohldag, A. Scholl, F. Nolting, E. Arenholz, S. Maat, A. T. Young, M. Carey, and J. Stöhr, Phys. Rev. Lett. 91, 017203 (2003).

    P. Kappenberger, S. Martin, Y. Pellmont, H. J. Hug, J. B. Kortright, O. Hellwig, and E. E. Fullerton, Phys. Rev. Lett. 91, 267202 (2003).

    E. Blackburn, C. Sanchez-Hanke, S. Roy, D. J. Smith, J. I. Hong, K. T. Chan, A. E. Berkowitz, and S. K. Sinha, Phys. Rev. B 78, 180408(R) (2008).

    M. Tsunoda, T. Nakamura, M. Naka, S. Yoshitaki, C. Mitsumata, and M. Takahashi, Appl. Phys. Lett. 89, 172501 (2006)APPLAB000089000017172501000001.

    C. Y. You, H. S. Goripati, T. Furubayashi, Y. K. Takahashi, and K. Hono, Appl. Phys. Lett. 93, 012501 (2008)APPLAB000093000001012501000001.

    K. -i. Imakita, M. Tsunoda, and M. Takahashi, J. Appl. Phys. 97, 10K106 (2005)JAPIAU00009700001010K106000001.

    K. Takano, R. H. Kodama, A. E. Berkowitz, W. Cao, and G. Thomas, Phys. Rev. Lett. 79, 1130 (1997).

    A. Sakuma, K. Fukamichi, K. Sasao, and R. Y. Umetsu, Phys. Rev. B 67, 024420 (2003).


For access to citing articles, you need to log in.


Figures (4)

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. Enhanced exchange anisotropy in IrMn/CoFeB systems and its correlation with uncompensated interfacial spins
  2. Controlled domain-wall injection in perpendicularly magnetized strips
  3. Enhanced low field magnetoresistance in nanocrystalline La0.7Sr0.3MnO3 synthesized on MgO nanowires
  4. Extremely low drift of resistance and threshold voltage in amorphous phase change nanowire devices
  5. Influence of the oxidizing species on the Ge dangling bonds at the (100)Ge/GeO2 interface
Go to AIP Home
Copyright © American Institute of Physics
close