Title:
MAGNETIC JOINT BODY, TMR ELEMENT, TMR ELEMENT ARRAY, MAGNETIC SENSOR, MAGNETIC SENSOR FOR LINEAR ENCODER, AND MAGNETIC ROTARY ENCODER
Document Type and Number:
WIPO Patent Application WO/2024/034206
Kind Code:
A1
Abstract:
This magnetic joint body comprises a first free layer (11), a tunnel barrier layer (12), and a second free layer (13). The tunnel barrier layer (12) is sandwiched between the first free layer (11) and the second free layer (13). The first and second free layers (11, 13) each contain a ferromagnetic metal. A detection target magnetic field is configured to have a component that is to be applied in the hard magnetization axis direction of the first and second free layers (11, 13). Magnetization of the first and second free layers (11, 13) becomes stabilized in an array in which the layers are antiparallel to each other under a non-magnetic field, and becomes stabilized in an array in which magnetization of the first and second free layers (11, 13) are parallel to each other in a state where the intensity of an external magnetic field applied in the hard magnetization axis direction of the first and second free layers (11, 13) reaches a saturation magnetic field.
Inventors:
NAKATANI TOMOYA (JP)
IWASAKI HITOSHI (JP)
IWASAKI HITOSHI (JP)
Application Number:
PCT/JP2023/017513
Publication Date:
February 15, 2024
Filing Date:
May 10, 2023
Export Citation:
Assignee:
NAT INST MATERIALS SCIENCE (JP)
International Classes:
G01R33/02; G01D5/245; G01R33/09; H10N50/10
Foreign References:
| JP2012049213A | 2012-03-08 | |||
| JP2009289390A | 2009-12-10 | |||
| JP2013070054A | 2013-04-18 | |||
| JP2010092579A | 2010-04-22 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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