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Title: Method for the detection of a magnetic field utilizing a magnetic vortex

Abstract

The determination of the strength of an in-plane magnetic field utilizing one or more magnetically-soft, ferromagnetic member, having a shape, size and material whereas a single magnetic vortex is formed at remanence in each ferromagnetic member. The preferred shape is a thin circle, or dot. Multiple ferromagnetic members can also be stacked on-top of each other and separated by a non-magnetic spacer. The resulting sensor is hysteresis free. The sensor's sensitivity, and magnetic saturation characteristics may be easily tuned by simply altering the material, size, shape, or a combination thereof to match the desired sensitivity and saturation characteristics. The sensor is self-resetting at remanence and therefore does not require any pinning techniques.

Inventors:
 [1];  [2]
  1. Chicago, IL
  2. Batavia, IL
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL
Sponsoring Org.:
USDOE
OSTI Identifier:
978681
Patent Number(s):
7,697,243
Application Number:
11/530,148
Assignee:
The United States of America as represented by the United States Department of Energy (Washington, DC) CHO
DOE Contract Number:  
W-31-109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Novosad, Valentyn, and Buchanan, Kristen. Method for the detection of a magnetic field utilizing a magnetic vortex. United States: N. p., 2010. Web.
Novosad, Valentyn, & Buchanan, Kristen. Method for the detection of a magnetic field utilizing a magnetic vortex. United States.
Novosad, Valentyn, and Buchanan, Kristen. Tue . "Method for the detection of a magnetic field utilizing a magnetic vortex". United States. https://www.osti.gov/servlets/purl/978681.
@article{osti_978681,
title = {Method for the detection of a magnetic field utilizing a magnetic vortex},
author = {Novosad, Valentyn and Buchanan, Kristen},
abstractNote = {The determination of the strength of an in-plane magnetic field utilizing one or more magnetically-soft, ferromagnetic member, having a shape, size and material whereas a single magnetic vortex is formed at remanence in each ferromagnetic member. The preferred shape is a thin circle, or dot. Multiple ferromagnetic members can also be stacked on-top of each other and separated by a non-magnetic spacer. The resulting sensor is hysteresis free. The sensor's sensitivity, and magnetic saturation characteristics may be easily tuned by simply altering the material, size, shape, or a combination thereof to match the desired sensitivity and saturation characteristics. The sensor is self-resetting at remanence and therefore does not require any pinning techniques.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Apr 13 00:00:00 EDT 2010},
month = {Tue Apr 13 00:00:00 EDT 2010}
}

Patent:

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