Method for testing local magnetomechanical coupling coefficient of a magnetic material
US10209322B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 2015 |
| Grant date | Feb 19, 2019 |
| Priority date | — |
| Expiry date | May 18, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/72
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for testing a local magnetomechanical coupling coefficient of a magnetic material includes defining a square of a local magnetomechanical coupling coefficient kIT as a the ratio of a magnetic energy stored in a magnetic material to an input reversible mechanical work, and characterizing the local magnetomechanical coupling coefficient of the magnetic material by measuring nano-indentation load-depth curves of the magnetic material under both situations of a saturated magnetic field and an unsaturated magnetic field. The method is simple in operation and has the advantages in local performance test of composite materials and other heterogeneous materials and also in small-scale performance test of nano-films.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.