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:
-
- Chicago, IL
- Batavia, IL
- Issue Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 978681
- Patent Number(s):
- 7697243
- Application Number:
- 11/530,148
- Assignee:
- The United States of America as represented by the United States Department of Energy (Washington, DC)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES
- 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}
}