ferromagnetismn.

1851 W. Gregory Lett. Animal Magn. Pref. 16 I understand by Ferro-magnetism almost the same as Dr. Faraday does by Para-magnetism; and I use the term in contradistinction to Vital or Animal Magnetism.

1868 Spiritual Mag. June 248 That the physical effects are in Mr. Home's case produced without aid from electricity, ferro-magnetism, or apparatus of any kind I am well satisfied.

1881 J. C. Maxwell Treat. Electr. & Magnetism (ed. 2) II. xxii. 429 (heading) Ferromagnetism and diamagnetism explained by molecular currents.

1898 Electr. Jrnl. 8 Apr. 795/2 Light has been thrown by recent research upon the connection between ferromagnetism, paramagnetism, and diamagnetism.

1930 E. C. Stoner Magnetism iv. 74 Ferromagnetism is to be attributed to the spin moments of the electrons in the atoms and ions, and not to the spin moments of free electrons, which normally should give rise only to a small paramagnetism.

1957 Encycl. Brit. IX. 186/1 Ferromagnetism is the kind of magnetism associated with iron, cobalt and nickel and some alloys.

1966 McGraw-Hill Encycl. Sci. & Technol. (rev. ed.) V. 229/1 Some materials exhibit a special form of ferromagnetism below the Curie temperature called ferrimagnetism.

2013 J. W. Moore et al. Princ. Chem. vii. 254 Many alloys, such as alnico (an alloy of aluminium, nickel, and cobalt), exhibit greater ferromagnetism than do the pure metals themselves.