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Localized Magnetic Fields in Arbitrary Directions Using Patterned Nanomagnets
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DOI：10.1021/nl902949v.png)
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Abstract
En 中文
Control of the local magnetic fields desirable for spintronics and quantum information technology is not well developed. Existing methods produce either moderately small local fields or one held orientation. We present designs of patterned magnetic elements that produce remanent fields of 50 mT (potentially 200 Rif) confined to chosen, submicrometer regions in directions perpendicular to an external initializing field. A wide variety of magnetic-field profiles on nanorneter scales can be produced with the option of applying electric fields, for example, to move a quantum clot between regions where the magnetic-field direction or strength is different. We have confirmed our modeling by measuring the fields in one design using electron holography.
Keywords:
Magnetic field
nanomagnet
permalloy
electron holography
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