公开(公告)号：US11917917B2

公开(公告)日：2024-02-27

申请号：US17297243

申请日：2019-12-13

Applicant: NEC Corporation

Inventor： Akihiro Kirihara ,  Yasutomo Omori ,  Ryohto Sawada ,  Masahiko Ishida ,  Koichi Terashima ,  Yuma Iwasaki ,  Hiroko Someya

IPC: C22C38/06 ,  C22C38/18 ,  H10N15/20

CPC classification number: H10N15/20 ,  C22C38/06 ,  C22C38/18 ,  C22C2202/02

Abstract: A thermoelectric conversion element that has a power generation layer containing an iron-aluminum based magnetic alloy material containing equal to or more than 70 weight percent of iron and aluminum in total. The power generation layer generates an electromotive force, due to an anomalous Nernst effect that develops in the magnetic alloy material in response to a temperature gradient applied thereto, in a direction intersecting both the magnetization direction of the magnetic alloy material and the direction of the applied temperature gradient.

公开(公告)号：US20230270009A1

公开(公告)日：2023-08-24

申请号：US18105546

申请日：2023-02-03

Applicant: NEC Corporation

Inventor： Masahiko ISHIDA ,  Yasutomo Omori ,  Akihiro Kirihara ,  Hiroko Someya

IPC: H10N15/20 ,  C22C19/07 ,  C22C19/00 ,  C22C28/00

CPC classification number: H10N15/20 ,  C22C19/07 ,  C22C19/007 ,  C22C28/00 ,  C22C2202/02

Abstract: Provided is a thermoelectric conversion element having a high Anomalous Nernst Effect at a lower cost. A thermoelectric conversion element (1) includes a magnetic alloy material containing aluminum, cobalt, and samarium, and a power generation layer (10), in which in the power generation layer (10), a content of aluminum in the magnetic alloy material is in a range of 1 atomic percent to 40 atomic percent, a content of samarium in the magnetic alloy material is in a range of 12 atomic percent to 40 atomic percent, and a content of cobalt in the magnetic alloy material is in a range of 57 atomic percent to 82 atomic percent.

公开(公告)号：US12000790B2

公开(公告)日：2024-06-04

申请号：US17265657

申请日：2019-08-05

Applicant: NEC Corporation

Inventor： Masahiko Ishida ,  Ryohto Sawada ,  Yuma Iwasaki ,  Akihiro Kirihara ,  Hiroko Someya

IPC: G01N25/48 ,  H10N15/20

CPC classification number: G01N25/482 ,  H10N15/20

Abstract: This invention prevents measurement error from becoming large in thermoelectric conversion coefficient evaluation and enhances evaluation efficiency. This invention is a physical property evaluation device for evaluating the physical properties of a plurality of solid materials formed on a substrate. The physical property evaluation device comprises an electromotive force measurement means that forms closed circuits including the individual solid materials and measures the electromotive forces occurring at the two ends of each of the solid materials, a means for producing heat flow within the individual solid materials, an external magnetic field generation means for generating a uniform magnetic field having a given intensity and direction in the vicinity of the individual solid materials, and an automation means for evaluating the physical properties of the individual solid materials using the electromotive force measurement means, heat flow production means, and external magnetic field generation means.