US 12,464,952 B2
Magnetostrictive member and method for manufacturing magnetostrictive member
Kazuhiko Okubo, Ome (JP); Kazutaka Osako, Ome (JP); and Kiyoshi Izumi, Ome (JP)
Assigned to SUMITOMO METAL MINING CO., LTD., Tokyo (JP)
Appl. No. 18/276,174
Filed by SUMITOMO METAL MINING CO., LTD., Tokyo (JP)
PCT Filed Feb. 4, 2022, PCT No. PCT/JP2022/004487
§ 371(c)(1), (2) Date Aug. 7, 2023,
PCT Pub. No. WO2022/172876, PCT Pub. Date Aug. 18, 2022.
Claims priority of application No. 2021-019133 (JP), filed on Feb. 9, 2021.
Prior Publication US 2024/0099146 A1, Mar. 21, 2024
Int. Cl. H10N 35/85 (2023.01); C30B 29/52 (2006.01); H01F 1/147 (2006.01); H01F 1/16 (2006.01); H01F 41/02 (2006.01); H10N 35/01 (2023.01)
CPC H10N 35/85 (2023.02) [C30B 29/52 (2013.01); H01F 1/147 (2013.01); H01F 1/16 (2013.01); H01F 41/02 (2013.01); H10N 35/01 (2023.02)] 6 Claims
OG exemplary drawing
 
1. A magnetostrictive member
formed of a single crystal of an iron-based alloy having magnetostrictive characteristics,
being a plate body having a long-side direction and a short-side direction, and
having a lattice constant of a <100> orientation in the long-side direction not larger than a lattice constant average calculated from lattice constants of <100> orientations in three directions, or the long-side direction, the short-side direction, and a direction orthogonal to the long-side direction and the short-side direction, wherein
the iron-based alloy is an Fe—Ga alloy, and
the magnetostrictive member has the lattice constant of the <100> orientation in the long-side direction of 2.9034 Å or less and has one of lattice constants of <100> orientations other than the long-side direction larger than the lattice constant of the <100> orientation in the long-side direction by 0.0006 Å or more.