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Balancing interlayer dipolar interactions in multilevel patterned media with out-of-plane magnetic anisotropy
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10.1063/1.3078523
/content/aip/journal/apl/94/5/10.1063/1.3078523
http://aip.metastore.ingenta.com/content/aip/journal/apl/94/5/10.1063/1.3078523
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Figures

Image of FIG. 1.
FIG. 1.

(a) Major and minor hysteresis loops as measured by polar Kerr (a) for an array of dots of spaced by 100 nm as reproduced from Fig. 4(b) in Ref. 5 (manifestation of the sole intradot dipolar interactions) and (b) for a continuous film of film (manifestation of the sole RKKY interactions), where and stand for and . In order to ease the comparison between (a) and (b), the axis in (a) is inverted. The black arrows on the loops indicate the scan directions.

Image of FIG. 2.
FIG. 2.

(a) Dependence with of the antiferromagnetic RKKY shift , as deduced from experimental hysteresis loops for the case of a Ru spacer, and calculated dependence of the dipolar energy normalized to ascribed to the stray field created by on for square dots . The star indicates the experimental value from Ref. 5. The inset is a zoom of our RKKY data, compared with data from Ref. 11 (dotted line). (b) Mapping of the stray field emanating from at the upper interface of for .

Image of FIG. 3.
FIG. 3.

Hysteresis loop for an array of dots spaced by 200 nm measured via polar magneto-optical Kerr effect experiments with different optical wavelengths and configurations (a) and (b). The signal from the dots is highlighted in black with respect to the signal from the trenches, which is in gray. (c) Minor hysteresis loop (closed squares) for the same sample and conditions as those of (b). The scan directions for (a)–(c) are the same as those labeled in Fig. 1. The inset is the corresponding MFM image after demagnetization by rotation at 180 rpm under a decreasing steady magnetic field . The scale gives the correspondence between the color code of the image and the phase shift in the resonance frequency of the MFM tip.

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/content/aip/journal/apl/94/5/10.1063/1.3078523
2009-02-04
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Balancing interlayer dipolar interactions in multilevel patterned media with out-of-plane magnetic anisotropy
http://aip.metastore.ingenta.com/content/aip/journal/apl/94/5/10.1063/1.3078523
10.1063/1.3078523
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