公开(公告)号：US11963449B2

公开(公告)日：2024-04-16

申请号：US17639754

申请日：2020-10-05

Applicant: TDK Corporation

Inventor： Youhei Noda ,  Shota Suzuki

IPC: H10N10/17

CPC classification number: H10N10/17

Abstract: To increase thermoelectromotive voltage of a thermoelectric conversion element with a magnetization direction, a temperature gradient direction, and an electromotive force direction orthogonal to each other. A thermoelectric conversion element 1 is formed by annularly winding a thermoelectric material which is radially magnetized and circumferentially generates an electromotive force in accordance with a temperature gradient in the axial direction thereof. Thus, the thermoelectric material is wound not linearly but annularly, so that a connection line for connecting a plurality of thermoelectric materials is not necessary. In particular, when the thermoelectric material is wound in a plurality of turns, the length per unit area of the thermoelectric material in the direction of the electromotive force can be significantly increased, making it possible to significantly increase thermoelectromotive voltage while suppressing increase in the size of the element.

公开(公告)号：US11508494B2

公开(公告)日：2022-11-22

申请号：US16818413

申请日：2020-03-13

Applicant: TDK Corporation

Inventor： Shota Suzuki ,  Nobuyuki Okuzawa

IPC: H01B3/10 ,  H01P7/10

Abstract: A dielectric composition contains a complex oxide represented by a composition formula of BixZnyNbzO1.75+δ. x+y+z=1.00. x

公开(公告)号：US11380482B2

公开(公告)日：2022-07-05

申请号：US17042523

申请日：2019-03-15

Applicant: TDK CORPORATION

Inventor： Shota Suzuki ,  Nobuyuki Okuzawa ,  Daisuke Hirose ,  Shirou Ootsuki ,  Wakiko Sato

IPC: H01G4/12 ,  C04B35/453 ,  C04B35/495 ,  H01B3/12 ,  H01G4/30 ,  H01G4/33

Abstract: A dielectric composition including a complex oxide containing bismuth, zinc, and niobium, includes a crystal phase formed of the complex oxide and having a pyrochlore type crystal structure, and an amorphous phase. When the complex oxide is represented by a composition formula BixZnyNbzO1.75+δ, in which x, y, and z satisfy relations of x+y+z=1.00, 0.20≤y≤0.50, and 2/3≤x/z≤3/2.