US 11,917,917 B2
Thermoelectric conversion element
Akihiro Kirihara, Tokyo (JP); Yasutomo Omori, Tokyo (JP); Ryohto Sawada, Tokyo (JP); Masahiko Ishida, Tokyo (JP); Koichi Terashima, Tokyo (JP); Yuma Iwasaki, Tokyo (JP); and Hiroko Someya, Tokyo (JP)
Assigned to NEC CORPORATION, Tokyo (JP)
Appl. No. 17/297,243
Filed by NEC Corporation, Tokyo (JP)
PCT Filed Dec. 13, 2019, PCT No. PCT/JP2019/048895
§ 371(c)(1), (2) Date May 26, 2021,
PCT Pub. No. WO2020/129835, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 2018-238642 (JP), filed on Dec. 20, 2018; and application No. 2019-099484 (JP), filed on May 28, 2019.
Prior Publication US 2022/0052247 A1, Feb. 17, 2022
Int. Cl. C22C 38/06 (2006.01); C22C 38/18 (2006.01); H10N 15/20 (2023.01)
CPC H10N 15/20 (2023.02) [C22C 38/06 (2013.01); C22C 38/18 (2013.01); C22C 2202/02 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A thermoelectric conversion element comprising:
a power generation layer comprising an iron-aluminum alloy exhibiting an anomalous Nernst effect and containing equal to or more than 70 weight percent of iron and aluminum in total, wherein
the power generation layer is magnetized in an in-plane direction parallel to a main surface of the power generation layer, and generates an electromotive force, due to an anomalous Nernst effect that develops in the magnetic alloy material in response to a temperature gradient applied to the power generation layer, in a direction intersecting both a magnetization direction of the magnetic alloy material and a direction of the applied temperature gradient,
a thickness of the power generation layer is greater than 10 micrometers in an out-of-plane direction perpendicular to the main surface of the power generation layer, and
the magnetic alloy material contains chromium of equal to or more than 10 weight percent and equal to or less than 25 weight percent.