Permanent magnet material containing ca, pb and la oxides

Abstract

Abstract PURPOSE:To obtain the titled material comparable or superior to a known magnet contg. Ba or Sr in magnetic characteristics and capable of being easily provided with directional properties by a mechanical method by substituting PbO for part of CaO in a permanent magnet material contg. Ca and La oxides. CONSTITUTION:This permanent magnet material contg. Ca, Pb and La oxides has a chemical composition represented by a formula (CaO1-xPbOx.6Fe2O3)100-y (La2O3)y (where 0.2<=x<0.8 and 2<=y<=5). The magnet material is obtd, by substituting PbO for part of CaO in a Ca-La ferrite magnet made of a compound represented by a formula (CaO.6Fe2O3)97(La2O3)3, and it is comparable or superior to a conventional known Ba or Sr ferrite magnet in magnetic characteristics and is easily provided with directional properties by a mechanical method.

Inventors

• 👤 Mitsuru Nagakura
• 👤 永倉充
• 👤 Hiroshi Yamamoto
• 👤 山元洋

Bibliographic Details