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Structure and magnetism of dilute Co(Zr) nanoclusters
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Image of FIG. 1.
FIG. 1.

(a) X-ray diffraction patterns for nanoclusters of Co and Co(Zr) having 6.3 at. % of Zr. The standard positions and relative intensities of XRD peaks corresponding to the hcp and fcc structures of Co are given as vertical-solid and -dotted lines, respectively (b) High-resolution TEM image of Co(Zr) nanoclusters and (c) the corresponding fast Fourier transform along [0001] zonal axis revealing hcp structure.

Image of FIG. 2.
FIG. 2.

Easy-axis alignment of Co(Zr) nanoclusters: (a) Schematic illustration of the alignment method using a set of permanent magnets (N-S), prior to deposition on substrate. (b) Three dimensional view of the substrate is also given—in order to show the direction of the applied magnetic field (x-axis) with respect to the substrate plane. The expanded room-temperature curves of the aligned nanoclusters measured along the easy (x-axis) and hard (y-axis) directions: (c) Co and (d) Co(Zr) having 6.3 at. % of Zr.

Image of FIG. 3.
FIG. 3.

(a) and (b) / at 300 K of Co(Zr) nanoclusters as a function Zr contents measured along easy (x) and hard (z) axes. (c) Schematic of a uniaxial nanocluster, where is the magnetic field used for alignment and γ is the angle between the easy axis and . (d) The probability distribution P(γ) of easy axes for Co and Co(Zr) nanoclusters having 7.8 at. % of Zr.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Structure and magnetism of dilute Co(Zr) nanoclusters