noun
alnico magnet
A permanent magnet made from an alloy of aluminum, nickel, and cobalt. Used in technical and industrial contexts.
アルニコ磁石は高温でも磁力を保ちやすい。
Alnico magnets tend to retain their magnetism even at high temperatures.
古いスピーカーにはアルニコ磁石が使われて
Old speakers sometimes use alnico magnets.