Magnetic phase transitions in epitaxial Fe/Cr superlattices

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The surface spin-flop and Neel transitions are examined in Fe/Cr superlattices. The surface spin-flop, originally predicted by Mills [Phys. Rev. Lett. 20, 18 (1968)], is observed in Fe/Cr(211) superlattices with antiferromagnetic interlayer coupling and uniaxial in-plane-anisotropy. The Neel transition (T{sub N}) of Cr is observed in Fe/Cr(001) superlattices, for which the onset of antiferromagnetism is at a thickness t{sub Cr} of 42{angstrom}. The bulk value of T{sub N} is approached asymptotically as t{sub Cr} increases and is characterized by a three-dimensional shift exponent. These T{sub N} results are attributed to finite-size effects and spin-frustration near rough Fe-Cr interfaces.

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25 p.

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Fullerton, E.E.; Sowers, C.H.; Bader, S.D.; Riggs, K.T. & Berger, A. December 31, 1995.

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The surface spin-flop and Neel transitions are examined in Fe/Cr superlattices. The surface spin-flop, originally predicted by Mills [Phys. Rev. Lett. 20, 18 (1968)], is observed in Fe/Cr(211) superlattices with antiferromagnetic interlayer coupling and uniaxial in-plane-anisotropy. The Neel transition (T{sub N}) of Cr is observed in Fe/Cr(001) superlattices, for which the onset of antiferromagnetism is at a thickness t{sub Cr} of 42{angstrom}. The bulk value of T{sub N} is approached asymptotically as t{sub Cr} increases and is characterized by a three-dimensional shift exponent. These T{sub N} results are attributed to finite-size effects and spin-frustration near rough Fe-Cr interfaces.

Physical Description

25 p.

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OSTI as DE96004271

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  • Spring meeting of the Materials Research Society (MRS), San Francisco, CA (United States), 17-21 Apr 1995

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  • Other: DE96004271
  • Report No.: ANL/MSD/CP--84926
  • Report No.: CONF-950412--60
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 186723
  • Archival Resource Key: ark:/67531/metadc670611

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  • December 31, 1995

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  • June 29, 2015, 9:42 p.m.

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  • Dec. 16, 2015, 5:32 p.m.

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Fullerton, E.E.; Sowers, C.H.; Bader, S.D.; Riggs, K.T. & Berger, A. Magnetic phase transitions in epitaxial Fe/Cr superlattices, article, December 31, 1995; Illinois. (digital.library.unt.edu/ark:/67531/metadc670611/: accessed December 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.