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      Applied Physics Letters -- June 10, 1991 -- Volume 58, Issue 23,
      pp. 2710-2712

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      Giant magnetoresistance in antiferromagnetic Co/Cu multilayers

    S. S. P. Parkin IBM Research Division, Almaden Research Center, 650
Harry Road, San Jose, California 95120-6099

    Z. G. Li and David J. Smith Center for Solid State Science, Arizona
State University, Tempe, Arizona 85289

(Received 20 February 1991; accepted 22 March 1991)

We report giant values of saturation magnetoresistance in sputtered
antiferromagnetic Co/Cu multilayers containing thin Co and Cu layers
8?10 Å thick. We discuss the key importance of the buffer layer in
controlling the growth of flat Co and Cu layers. As shown by
cross-section transmission electron microscopy high-quality structures
are found for growth on Fe buffer layers. Such structures display
saturation magnetoresistance at 300 K of more than 65% with saturation
fields of [approximately-equal-to]10 kOe. These values are several times
larger than previously found for any magnetic material at room
temperature. Applied Physics Letters is copyrighted by The American
Institute of Physics.


doi: <http://ojps.aip.org/jhtml/doi.jsp>10.1063/1.104765
PACS: 73.50.Jt, 68.55.Jk, 75.70.Fr        Additional Information
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