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We have measured the chemical grain sizes and magnetic correlation lengths in CoCr-based magnetic recording media films using resonant soft x-ray small-angle scattering. We find that the addition of boron, while leading to slightly smaller physical grains, dramatically reduces the magnetic correlation length. These results show that B additions effectively act to suppress intergranular magnetic exchange via segregation to the grain boundaries. © 2002 American Institute of Physics.
Published in:
Applied Physics Letters
(Volume:80
,
Issue:
7
)
Date of Publication: Feb 2002