Finite-temperature anisotropy of magnetic alloys

Finite-temperature anisotropy of magnetic alloys

Title of Thesis : MAGNETIC ANISOTROPY OF Fe 1 - xGax ALLOYS

Thin circular {110} disks with all <100>, <110> and <111> in the plane of the disk were used to measure K 1 and K 2. K 1 was also measured with {100} circular disks. K 1 for 5 at% Ga content has been found to be larger than that of pure Fe. K 1 and K 2 both drops gradually till 18 % Ga substitution. Then there is a sharp drop in the magnitude of both the constants. <110> and <111> directions we...

Origin of magnetic anisotropy in doped Ce2Co17 alloys

Magnetic Screening at Finite Temperature

It is shown that at finite temperature and in the presence of magnetic sources magnetic fields are screened. This is proven within the framework of classical transport theory both for the Abelian and non-Abelian plasmas. Magnetic screening arises in this formalism as a consequence of polarization effects occurring in the plasmas, and it is non-perturbative in the gauge coupling constant. It is ...

Magnetoviscosity in suspensions of grains with finite magnetic anisotropy.

Coupling between magnetic and mechanical rotational degrees of freedom of fine ferromagnetic grains is provided by the energy of their magnetic anisotropy. In the limiting case of strong anisotropy, an applied stationary magnetic field induces the greatest obstacles to the "rigid dipole" spin in a vortex ferrofluid flow, while in the opposite ideal case, the "soft dipoles" twist freely with the...