dorsal/arxiv
View SchemaPlanar Atom Trap and Magnetic Resonance 'Lens' Designs
| Authors | M. Barbic, C. P. Barrett, T. H. Emery, A. Scherer |
|---|---|
| Categories | |
| ArXiv ID | physics/0702154 |
| URL | https://arxiv.org/abs/physics/0702154 |
Abstract
We present various planar magnetic designs that create points above the plane where the magnitude of the static magnetic field is a local minimum. Structures with these properties are of interest in the disciplines of neutral atom confinement, magnetic levitation, and magnetic resonance imaging. Each planar permanent magnet design is accompanied by the equivalent planar single non-crossing conductor design. Presented designs fall into three categories producing: a) zero value magnetic field magnitude point minima, b) non-zero magnetic field magnitude point minima requiring external bias magnetic field, and c) self-biased non-zero magnetic field magnitude point minima. We also introduce the Principle of Amperean Current Doubling in planar perpendicularly magnetized thin films that can be used to improve the performance of each permanent magnet design we present. Single conductor current-carrying designs are suitable for single layer lithographic fabrication, as we experimentally demonstrate. Finally, we present the case that nanometer scale recording of perpendicular anisotropy thin magnetic films using presently available data storage technology can provide the ultimate miniaturization of the presented designs.
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"abstract": "We present various planar magnetic designs that create points above the plane\nwhere the magnitude of the static magnetic field is a local minimum. Structures\nwith these properties are of interest in the disciplines of neutral atom\nconfinement, magnetic levitation, and magnetic resonance imaging. Each planar\npermanent magnet design is accompanied by the equivalent planar single\nnon-crossing conductor design. Presented designs fall into three categories\nproducing: a) zero value magnetic field magnitude point minima, b) non-zero\nmagnetic field magnitude point minima requiring external bias magnetic field,\nand c) self-biased non-zero magnetic field magnitude point minima. We also\nintroduce the Principle of Amperean Current Doubling in planar perpendicularly\nmagnetized thin films that can be used to improve the performance of each\npermanent magnet design we present. Single conductor current-carrying designs\nare suitable for single layer lithographic fabrication, as we experimentally\ndemonstrate. Finally, we present the case that nanometer scale recording of\nperpendicular anisotropy thin magnetic films using presently available data\nstorage technology can provide the ultimate miniaturization of the presented\ndesigns.",
"arxiv_id": "physics/0702154",
"authors": [
"M. Barbic",
"C. P. Barrett",
"T. H. Emery",
"A. Scherer"
],
"categories": [
"physics.atom-ph",
"physics.med-ph"
],
"title": "Planar Atom Trap and Magnetic Resonance \u0027Lens\u0027 Designs",
"url": "https://arxiv.org/abs/physics/0702154"
},
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