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Journal of Applied Physics / Volume 102 / Issue 4 / MAGNETISM AND SUPERCONDUCTIVITY

J. Appl. Phys. 102, 043902 (2007); http://dx.doi.org/10.1063/1.2769807 (4 pages)

Characteristic temperatures of exchange biased systems

A. N. Dobrynin and R. Prozorov

Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011

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(Received 1 April 2007; accepted 4 July 2007; published online 16 August 2007)

Characteristic temperatures in ferromagnetic-antiferromagnetic exchange biased systems are analyzed. In addition to usual blocking temperature of exchange bias, TB, and the Néel temperature of an antiferromagnet, TN, the inducing temperature of exchange bias, Tind, has been recently proposed. Tind is the temperature at which the direction of exchange anisotropy is established. We demonstrate that this temperature is, in general, different from TB and TN. Measurements of Tind, in addition to TB and TN, provide important information about exchange interactions in ferromagnetic-antiferromagnetic heterostructures.

© 2007 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. THE PROCEDURE FOR MEASURING THE EXCHANGE BIAS INDUCING TEMPERATURE
  3. MODEL OF INTERACTIONS IN A FERROMAGNETIC-ANTIFERROMAGNETIC SYSTEM
  4. THE DISTINCTION BETWEEN INDUCING, BLOCKING, AND NéEL TEMPERATURES
  5. CONCLUSIONS

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KEYWORDS and PACS

Keywords

antiferromagnetism, exchange interactions (electron), ferromagnetism, interface magnetism, magnetic anisotropy, Neel temperature

PACS

  • 75.70.Cn

    Magnetic properties of interfaces (multilayers, superlattices, heterostructures)

  • 75.30.Et

    Exchange and superexchange interactions

  • 75.30.Kz

    Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.)

  • 75.30.Gw

    Magnetic anisotropy

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.2769807

PUBLICATION DATA

ISSN

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

Publisher

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

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