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L10 ordered epitaxial FePt (001) thin films on TiN/Si (100) by pulsed laser deposition

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3 Author(s)
Trichy, G.R. ; Department of Materials Science and Engineering, Rm. 3030 Engineering Building 1, North Carolina State University, Raleigh, North Carolina 27695-7907 ; Narayan, J. ; Zhou, H.

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Epitaxially oriented magnetic FePt (001) thin films were grown on Si (001) substrates with TiN as a template buffer by using pulsed laser deposition. The epitaxial relationship and presence of L10 ordering were studied by x-ray diffraction and further confirmed by detailed transmission electron microscopy. The effectiveness of using TiN (diamagnetic metal) as a template, for an epitaxial magnetic FePt heterostructure integrated with silicon and for inducing L10 order in the FePt films, has been demonstrated. Magnetic measurements show that the ordered FePt films are predominantly perpendicularly magnetized and have high values of coercivity suitable for magnetic recording applications.

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Applied Physics Letters  (Volume:89 ,  Issue: 13 )