Tucker, Monte Carlo study of a mixed spin-1 and spin-3/2 Ising ferromagnet
, IEEE Transactions on Magnetics: 38, 2406-2408 (2002).
Experiments showed that the ferromagnet
, which was observed at room-temperature through thin cobalt-tinted films of titanium dioxide, is colorless, transparent, and one-millionth of a millimeter thick.
Privorotskii, Theory of Domain Structure of Uniaxial Ferromagnets
, Soviet Physics JETP 32 (5), 964-970 (1971).
At temperatures below 5 kelvins, all the spins are in line, and the compound behaves like a ferromagnet
In such samples, we discovered the presence of a hybrid domain wall consisting of coincident ferromagnet
and antiferromagnet sections.
Surprisingly, it is found that the spiral invades the hard ferromagnet
even at extremely low fields, in contradiction to current theory.
For any isotropic ferromagnet
the nature of the low temperature excitations at long wavelengths is well established; in this hydrodynamic or continuum limit the small wave vector excitations are the familiar spin waves or magnons, and the theory works well over a surprisingly wide range of temperatures.
The first step in showing that this may be possible comes from the theory of ferromagnets
Previously, iron, cobalt and nickel were the only elements to be room-temperature ferromagnets
, materials that retain magnetism after exposure to a magnetic field.
This is an edited collection of 10 peer-reviewed papers having to do with studies of physical characteristics of ferromagnets
, ferroelectrics and ferroelastics over a narrow temperature range.
23]) as well as the modeling of conducting ferromagnets
(via [sigma] [not equal to] 0 in (2.
With properties similar to those of magnets on a refrigerator, ferromagnets
use a magnetic interaction between its constituent atoms that align all their spins - the origin of the atoms' magnetism - in a single direction.