Ihi Corporation

Hidekazu Tomono

Haruki Eguchi

Natsuki Yoneyama

Isao Nakanowatari

Hiroo Takahashi

Keisuke Nagao

A rare earth permanent magnet includes a main phase containing: a rare earth element R of one or more types including Nd; an element L of one or more types selected from a group consisting of Co, Be, Li, Al, and Si; B; and Fe, wherein crystals which form the main phase belong to P4/mnm; some of B atoms occupying a 4f site of the crystals are substituted with atoms of the element L; each distribution of Nd atoms and the atoms of the element L appears along a C-axis direction of the crystals in a plurality of cycles; and the rare earth permanent magnet includes an area where a cycle of the atoms of the element L matches a cycle of the Nd atoms.

Rare earth permanent magnet and rare earth permanent magnet manufacturing method

A magnetic property of a rare earth permanent magnet containing neodymium, iron, and boron is enhanced. The present disclosure is a rare earth permanent magnet with a compound represented by a following expression as a main phase: NdFeBM. In the expression, M represents an element selected from any one of cobalt, beryllium, lithium, aluminum, and silicon and x satisfies 0.01&#x2264;x&#x2264;0.25. The main phase has an Nd&#x2014;Fe&#x2014;B layer and an Fe layer periodically and part of boron is substituted with any one or more types of elements selected from a group consisting of cobalt, beryllium, lithium, aluminum, and silicon.

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Tokyo, Japan

Hidekazu Tomono