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Paramagnetism
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Paramagnetism is a form of magnetism whereby some materials are weakly attracted by an externally applied magnetic field, and form internal, induced magnetic fields in the direction of the applied mag
Liquid oxygen (blue) can be suspended between the poles of a strong magnet as a result of its paramagnetism.
Liquid oxygen (blue) can be suspended between the poles of a strong magnet as a result of its paramagnetism.
In a metal, the application of an external magnetic field increases the density of electrons with spins antiparallel with the field and lowers the den
In a metal, the application of an external magnetic field increases the density of electrons with spins antiparallel with the field and lowers the density of the electrons with opposite spin. Note: The arrows in this picture indicate magnetic moment direction, not electron spin direction. The direction of the magnetic moment is opposite of that of the spin since electrons carry a negative charge.
Idealized Curie–Weiss behavior; N.B. TC=θ, but TN is not θ. Paramagnetic regimes are denoted by solid lines. Close to TN or TC the behavior usually de
Idealized Curie–Weiss behavior; N.B. TC=θ, but TN is not θ. Paramagnetic regimes are denoted by solid lines. Close to TN or TC the behavior usually deviates from ideal.
Ferromagnetism
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Ferromagnetism is a property of certain materials that results in a significant, observable magnetic permeability, and in many cases, a significant magnetic coercivity, allowing the material to form a
Paramagnetism
…particle are paired, then the substance made of this particle is diamagnetic; if it has unpaired electrons, then the substance is paramagnetic. Unlike ferromagnets, paramagnets do not retain any magnetization in the absence of an externally applied magnetic field because thermal motion randomizes the spin orientations…
A magnet made of alnico, a ferromagnetic iron alloy, with its keeper
A magnet made of alnico, a ferromagnetic iron alloy, with its keeper