RARE EARTH PERMANENT MAGNET

To provide a rare earth permanent magnet with excellent magnetic properties.SOLUTION: A rare earth permanent magnet includes R and T. R requires Sm, two or more rare earth elements that require Pr or Nd. T is Fe alone or Fe and Co. The rare earth permanent magnet has a major phase and a minor phase....

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Bibliographic Details
Main Authors FUKUCHI EIICHIRO, ITO MASASHI, WATANABE TAKASHI, TOMITA MASAKI
Format Patent
LanguageEnglish
Japanese
Published 30.01.2020
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
INDUCTANCES
MAGNETS
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
TRANSFORMERS
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Summary:To provide a rare earth permanent magnet with excellent magnetic properties.SOLUTION: A rare earth permanent magnet includes R and T. R requires Sm, two or more rare earth elements that require Pr or Nd. T is Fe alone or Fe and Co. The rare earth permanent magnet has a major phase and a minor phase. The major phase has a ThMntype crystal structure. The minor phase includes a first minor phase having a NdFetype crystal structure. The major phase includes Sm. The first minor phase includes Sm and further includes Pr and/or Nd.SELECTED DRAWING: None 【課題】磁気特性が優れた希土類永久磁石を提供する。【解決手段】希土類永久磁石はＲおよびＴを含む。ＲはＳｍを必須とし、ＰｒまたはＮｄを必須とする２種以上の希土類元素である。ＴはＦｅ単独またはＦｅおよびＣｏである。希土類永久磁石は、主相および副相を有する。主相はＴｈＭｎ１２型結晶構造を有する。副相はＮｄ５Ｆｅ１７型結晶構造を有する第１の副相を含む。主相はＳｍを含む。第１の副相はＳｍを含み、さらに、Ｐｒおよび／またはＮｄを含む。【選択図】なし
Bibliography:Application Number: JP20180137923