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Explain Ferrimagnetism?

Explain Ferrimagnetism?
 

Grade:12

3 Answers

SHANMUKESHWAR
461 Points
8 years ago
Ferrimagnetism. In physics, a ferrimagnetic material is one that has populations of atoms with opposing magnetic moments, as in antiferromagnetism; however, in ferrimagnetic materials, the opposing moments are unequal and a spontaneous magnetization remains.
KUNCHAM SAMPATH
402 Points
8 years ago
Ferrimagnetism: The substances in which the magnetic moments of the domains
are aligned in parallel and anti-parallel directions, in unequal numbers, are said to have
ferrimagnetism. Examples include Fe3O4 (magnetite), ferrites such as MgFe2O4 and
ZnFe2O4.
Ferrimagnetic substances are weakly attracted by a magnetic field as compared to
ferromagnetic substances. On heating, these substances become paramagnetic.
 
santhosh
67 Points
8 years ago

In physics, a ferrimagnetic material is one that has populations of atoms with opposing magnetic moments, as in antiferromagnetism; however, in ferrimagnetic materials, the opposing moments are unequal and a spontaneous magnetization remains.[1] This happens when the populations consist of different materials or ions (such as Fe2+ and Fe3+).

Ferrimagnetism is exhibited by ferrites and magnetic garnets. The oldest known magnetic substance, magnetite (iron(II,III) oxide; Fe3O4), is a ferrimagnet; it was originally classified as a ferromagnet before Néel's discovery of ferrimagnetism and antiferromagnetism in 1948.[2]

Some ferrimagnetic materials are YIG (yttrium iron garnet), cubic ferrites composed of iron oxides and other elements such as aluminum, cobalt, nickel, manganese and zinc, hexagonal ferrites such as PbFe12O19 and BaFe12O19, and pyrrhotite, Fe1-xS.[3]

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