banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Tailoring exchange bias through chemical order in epitaxial FePt3 films
Rent this article for


Image of FIG. 1.
FIG. 1.

Structural characterization: (a) Chemical order within crystalline FePt (small arrows indicate the direction of the Fe moments, Pt is drawn without arrows). (b) X-ray diffraction of cubic FePt along (001) and (002). The difference in (001) intensity determines the degree of chemical order. The dashed lines are Voigt-fits to the data. (c) ϕ-scan along (022). The 90° periodicity indicates the epitaxial growth along the cubic symmetry.

Image of FIG. 2.
FIG. 2.

High angle neutron diffraction along the direction of the 2800 Å thick FePt thin films with  = 86% (a) and  = 54% (b). Lines are Gaussian fits to the data. (c) Temperature dependence of the integrated AFM peak intensity (the line is a guide to the eye). The dashed line represents the values obtained for a FePt order-modulated multilayer.

Image of FIG. 3.
FIG. 3.

Dark-field TEM images formed with a (001) diffracted beam for the cross sections of FePt samples with different chemical order. Bright regions correspond to chemical order, while dark ones represent disordered domains. Arrows in the image for  = 86% indicate the magnetic ordering within the sample's domains.

Image of FIG. 4.
FIG. 4.

Magnetic characterization: (a) magnetic hysteresis of the three samples at 10 K after field cooling in 1 T. (b) Exchange bias, determined as a shift of the hysteresis loop from the origin along the field axis. (c) Magnetic coercivity as a function of temperature. (d) AC susceptibility measured from low to high temperatures after field cooling in 1 T. The dashed lines in (b)–(d) represent the values obtained for a FePt order-modulated multilayer.


Generic image for table
Table I.

Growth temperature (), chemical order parameter (), chemically ordered grain size (), Néel temperature , and exchange bias at 10 K of the three (2800 Å) FePt thin films (Magnetic parameter is determined further below in this manuscript).


Article metrics loading...


Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Tailoring exchange bias through chemical order in epitaxial FePt3 films