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Elastic stiffness of FePt thin film studied by picosecond ultrasonics
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10.1063/1.3562031
/content/aip/journal/apl/98/10/10.1063/1.3562031
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/10/10.1063/1.3562031

Figures

Image of FIG. 1.
FIG. 1.

X-ray diffraction spectra of (a) the polycrystalline FePt film, (b) the epitaxial film prepared by the co-sputtering, and epitaxial films prepared by depositing superlattice with (c) 54 nm and (d) 28 nm.

Image of FIG. 2.
FIG. 2.

Time-resolved reflectivity change in probe light in a 54-nm-thick polycrystalline FePt film: multiple reflection echoes were observed . Roundtrip time was determined from the slope of the time delay vs (inset).

Image of FIG. 3.
FIG. 3.

Film-thickness dependence of (a) the out-of-plane elastic stiffness , (b) coercivity , and (c) uniaxial magnetic anisotropy energy . Open circles denote polycrystalline films deposited on glass substrates. Dots designate epitaxial films fabricated by depositing superlattices on MgO. Triangle denotes an epitaxial film prepared by co-sputtering on MgO. In (c), insets show typical AFM images.

Tables

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Table I.

Comparison of determined elastic constant (GPa) to calculated values.

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/content/aip/journal/apl/98/10/10.1063/1.3562031
2011-03-11
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Elastic stiffness of L10 FePt thin film studied by picosecond ultrasonics
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/10/10.1063/1.3562031
10.1063/1.3562031
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