Magnetic sensor, sensor unit, magnetic detection device, and magnetic measurement device
US10830840B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 28, 2016 |
| Grant date | Nov 10, 2020 |
| Priority date | — |
| Expiry date | Apr 4, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/0223
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
There are provided: an element array 10a including a plurality of tunnel magnetoresistive elements 20 respectively having a fixed magnetic layer 21, a free magnetic layer 22, and an insulation layer 23 provided between the fixed magnetic layer 21 and the free magnetic layer 22, the elements respectively for varying the tunnel resistance of the insulation layer 23 by influence of an external magnetic field; and an electric circuit 30 that applies a voltage to a plurality of the tunnel magnetoresistive elements 20 forming the element array 10a, with the voltage to be applied to each tunnel magnetoresistive element being equal to or higher than 0.1 mV and equal to or lower than 50 mV.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.