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Phys. Rev. B 75, 014442 (2007) [6 pages]

Evidence of modified ferromagnetism at a buried Permalloy/CoO interface at room temperature

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S. Roy1,*, C. Sanchez-Hanke2, S. Park3,6, M. R. Fitzsimmons3, Y. J. Tang4, J. I. Hong4, David J. Smith5, B. J. Taylor1, X. Liu1, M. B. Maple1, A. E. Berkowitz1,4, C.-C. Kao2, and S. K. Sinha1,3
1Department of Physics, University of California, San Diego, La Jolla, California 92093, USA
2National Synchrotron Light Source, Brookhaven National Laboratory, Upton, New York 11973, USA
3Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
4Center for Magnetic Recording Research, University of California, San Diego, La Jolla, California 92093, USA
5Center for Solid State Sciences and Department of Physics, Arizona State University, Tempe, Arizona 85287, USA
6Busan Center, Korea Basic Science Institute, Busan 609-735, Korea

See Also: Erratum

Received 6 December 2006; published 31 January 2007

We have used magnetometry and resonant soft x-ray magnetic reflectometry to determine the depth-dependent charge and magnetization density on an absolute scale across a Permalloy/CoO interface above the Néel temperature of CoO. A thin magnetic layer of 1.0 nm forms at the interface. This layer has larger magnetization density and different temperature dependence of magnetization than Permalloy.

© 2007 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.75.014442
DOI:
10.1103/PhysRevB.75.014442
PACS:
75.25.+z, 75.30.Cr, 75.70.Cn

*Corresponding author. Electronic address: sujoy@physics.ucsd.edu

See Also

Erratum: S. Roy, C. Sanchez-Hanke, S. Park, M. R. Fitzsimmons, Y. J. Tang, J. I. Hong, David J. Smith, B. J. Taylor, X. Liu, M. B. Maple, A. E. Berkowitz, C.-C. Kao, and S. K. Sinha, Erratum: Evidence of modified ferromagnetism at a buried Permalloy/CoO interface at room temperature [Phys. Rev. B 75, 014442 (2007)], Phys. Rev. B 76, 139901 (2007).