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Template-directed self-assembled magnetic nanostructures for probe recording
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View: Figures


Image of FIG. 1.
FIG. 1.

SEM images of (a) a patterned hole array in a PMMA resist created with EUV-IL with a hole size of 60 nm and a period of 100 nm. (b) Nanospheres with a diameter of 60 nm captured in the regular square hole array shown in (a). Template-directed self-assembly of nanospheres in (c) template with a hole diameter of 30 nm and a period of 50 nm and (d) template with a hole diameter of 22 nm and a period of 42 nm. The ordering is schematically shown in the insets.

Image of FIG. 2.
FIG. 2.

(a) Polar-MOKE hysteresis loop taken on the Co/Pt multilayer stack grown on an unpatterned area of the substrate (filled squares). (b) AFM/MFM images of magnetic nanocaps following demagnetization (nanocap diameter: 60 nm, period: 100 nm). (c) MFM images taken at remanence after exposing the initially saturated samples to a reverse magnetic field, . The corresponding remanence curve is constructed by counting the number of reversed nanostructures as a function of applied reverse field [open symbols in (a)].

Image of FIG. 3.
FIG. 3.

Probe recording on an array of nanocaps on 60 nm nanospheres with a period of 100 nm. [(a)–(c)] The series of MFM images reveals that the magnetization of the dots indicated with a frame switch with the tip field from an antiparallel (bright) to a parallel configuration (dark). The graph in (d) shows force-distance curves displaying a kink when the magnetization of the nanocap changes its direction. A custom made rodlike tip used for probe recording experiments is shown as an inset in (d).


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Template-directed self-assembled magnetic nanostructures for probe recording