What question did this study set out to answer?

To fabricate circumferential magnetic patterned media on disk substrates using an artificially assisted self-assembling method.

September 1, 2002IEEE Transactions on Magnetics

5-inch disk patterned media prepared by an artificially assisted self-assembling method

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Authors

KNKimiyoshi NaitoTohoku University HHHiroyuki HiedaToshiba (Japan)MSMakoto SakuraiChubu University

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Implication

Experimental study demonstrates nanofabrication of 40-nm magnetic dots on disk substrates, indicating improved coercive force for high-density storage.

Key Points

To fabricate circumferential magnetic patterned media on disk substrates using an artificially assisted self-assembling method.
Pressed a Ni master disk with spiral patterns (60–250 nm lands, 400 nm grooves) into a resist layer on CoPt or CoCrPt films on glass and silicon plates.
Cast a diblock copolymer solution into the grooves and annealed it to form aligned self-assembling dot structures.
Patterned the underlying magnetic films using ion milling based on the self-assembled dot templates to create 40-nm diameter magnetic dots.
Produced circumferential magnetic patterned media featuring uniform dots of 40-nm diameter.
Observed increases in coercive forces and squareness ratios compared to continuous media, likely driven by a reduction in the demagnetizing field.
Confirmed single magnetic domains displaying near-perpendicular orientation within individual magnetic dots.

Cite This Study

Naito et al. (2002) studied this question.

synapsesocial.com/papers/6a92c840eba2c67b4da600b3 https://doi.org/10.1109/tmag.2002.802847

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Implication

Experimental study demonstrates nanofabrication of 40-nm magnetic dots on disk substrates, indicating improved coercive force for high-density storage.

5-inch disk patterned media prepared by an artificially assisted self-assembling method

Discussion

Member takes

Implication

Key Points

Cite This Study

5-inch disk patterned media prepared by an artificially assisted self-assembling method

Discussion

Member takes

Implication

Key Points

Cite This Study

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