| Quantitative current measurements using scanning magnetoresistance microscopy. | |
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MedLine Citation:
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PMID: 18599218 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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We have demonstrated the capability of scanning magnetoresistance microscope (SMRM) to be used for quantitative current measurements. The SMRM is a magnetic microscope that is based on an atomic force microscope (AFM) and simultaneously measures the localized surface magnetic field distribution and surface topography. The proposed SMRM employs an in-house built AFM cantilever equipped with a miniaturized magnetoresistive (MR) sensor as a magnetic field sensor. In this study, a spin-valve type MR sensor with a width of 1 microm was used to measure the magnetic field distribution induced by a current carrying wire with a width of 5 microm and a spacing of 1.6 microm at room temperature and under ambient conditions. Simultaneous imaging of the magnetic field distribution and the topography was successfully performed in the DC current ranging from 500 microA to 8 mA. The characterized SV sensor, which has a linear response to magnetic fields, offers the quantitative analysis of a magnetic field and current. The measured magnetic field strength was in good agreement with the result simulated using Biot-Savart's law. |
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Authors:
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Taiichi Takezaki; Kazuhisa Sueoka |
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Publication Detail:
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Type: Journal Article Date: 2008-04-08 |
Journal Detail:
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Title: Ultramicroscopy Volume: 108 ISSN: 0304-3991 ISO Abbreviation: Ultramicroscopy Publication Date: 2008 Aug |
Date Detail:
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Created Date: 2008-08-04 Completed Date: 2008-10-09 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7513702 Medline TA: Ultramicroscopy Country: Netherlands |
Other Details:
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Languages: eng Pagination: 970-4 Citation Subset: - |
Affiliation:
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Graduate School of Information Science and Technology, Hokkaido University, Kita-14, Nishi-9, Kita-ku, Sapporo 060-0814, Japan. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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