ferrimagnetismn.
/ˌfɛrɪˈmaɡnᵻtɪz(ə)m/, U.S. /ˌfɛrɪˈmæɡnəˌtɪzəm/ Physics.
A type of magnetism which is macroscopically similar to ordinary ferromagnetism (although typically weaker), but differs from it on the atomic scale. Cf. ferromagnetism n.Ferrimagnetism arises from the antiparallel alignment of neighbouring magnetic dipoles, with unequal quantities or magnitudes of individual dipoles in each direction. Overall, this gives rise to a finite resultant magnetic moment. Ferrimagnetism is related to antiferromagnetism, but in the latter case antiparallel dipoles cancel out and there is no resultant magnetic moment.
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the world > matter > physics > quantum theory > electron spin > magnetism attributed to electron spin > [noun]
paramagnetism1845
diamagnetism1850
ferromagnetism1930
ferrimagnetism1948
speromagnetism1973
the world > matter > physics > electromagnetic radiation > magnetism > types of magnetism > [noun] > ferrimagnetism
ferrimagnetism1948
1948 Physics Abstr. 51 336/1 In some cases (ferrimagnetism) the substance behaves at a low temperature like a ferromagnetic, but..the saturation magnetization at 0° k is much less than that corresponding to complete parallelism of all the spins.
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.
2000 Guardian (Nexis) 22 Nov. 24 Louis Neel..shared the 1970 Nobel Prize in physics for his discoveries concerning antiferromagnetism and ferrimagnetism.
2012 Physics Lett. A. 376 2352/1 Ferrimagnetism is..possible even in nanometer-thick magnetite.
This entry has been updated (OED Third Edition, June 2014; most recently modified version published online March 2022).
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n.1948