期刊
APPLIED PHYSICS LETTERS
卷 83, 期 11, 页码 2196-2198出版社
AMER INST PHYSICS
DOI: 10.1063/1.1611280
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The influence of the deposition of an ultrathin Ag top layer on the structure and magnetic properties of FePt thin films has been investigated. Crystallographic ordering of the L1(0) face-centered-tetragonal (fct) FePt phase was significantly promoted when a Ag layer was deposited on top of the film. The increased fraction of hard magnetic L1(0) fct FePt phase led to a dramatic increase of coercivity from 1 to about 6.0 kOe. The deltaM curves suggested exchange decoupling of magnetic grains. A perpendicular FePt film with a coercivity of 5.0 kOe and remanent squareness of 0.98 was achieved with a CrRu underlayer and the Ag top layer. (C) 2003 American Institute of Physics.
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