Published online by Cambridge University Press: 15 September 2014
IN 1903 Heusler made the important discovery that alloys of copper, manganese, and aluminium are strongly magnetic. It was shown in the paper published by Heusler that by properly adjusting the amounts of the component metals present an alloy is obtained the permeability of which is comparable with that of cast iron. Heusler also demonstrated the fact that the properties of this alloy are profoundly modified by thermal treatment.
page 403 note * Proceedings of the Boyal Philosophical Society of Glasgow, session 1906–07.
page 403 note † Proceedings of the Royal Society of Edinburgh, vol. xxvii, part ii.
page 408 note * Hopkinson, Proceedings of the Royal Society., December 12, 1889; January 23, 1890; May 1, 1890.