The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 08, 2023
Filed:
Aug. 24, 2020
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
The University of Tokyo, Tokyo, JP;
Kazuya Yokota, Sunto-gun, JP;
Tetsuya Syoji, Susono, JP;
Noritsugu Sakuma, Mishima, JP;
Takashi Miyake, Tsukuba, JP;
Yosuke Harashima, Tsukuba, JP;
Hisazumi Akai, Tokyo, JP;
Naoki Kawashima, Tokyo, JP;
Keiichi Tamai, Tokyo, JP;
Munehisa Matsumoto, Tokyo, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
THE UNIVERSITY OF TOKYO, Tokyo, JP;
Abstract
A rare earth magnet including a magnetic phase having the composition represented by (NdLaCe)(FeCo)B. When the saturation magnetization at absolute zero and the Curie temperature calculated by Kuzmin's formula based on the measured values at finite temperature and the saturation magnetization at absolute zero and the Curie temperature calculated by first principles calculation are respectively subjected to data assimilation. The saturation magnetization M(x, y, z, T=0) at absolute zero and the Curie temperature obtained by machine learning using the assimilated data group are applied again to Kuzmin's formula and the saturation magnetization at finite temperature is represented by a function M(x, y, z, T), x, y, and z of the formula in an atomic ratio are in a range of satisfying M(x, y, z, T)>M(x, y, z=0, T) and 400≤T≤453.