Analysis in MagnetoCrystalline Anisotropy Energy and Intrinsic Coercivity for Body-Centered Cubic Crystal Lattices

Magnetic diploe moment can be modeled in a similar manner to a loop of wire carrying current i. Energy stored in that dipole moment can be obtained by integrating the torque produced by that current carrying current loop. The summation of magnetic dipole moment over the volume Av yields a new property of material called magnetization. The property of aligning domains within a permanent magnet itself with its internal field and in absence of external field is called spontaneous magnetization. In other words, a permanent magnet should sustain flux by virtue of its own internal field that requires spontaneous alignment of the magnetic dipole moments, or spontaneous magnetization. Magnetic materials are made in such a way that they have properties in one preferred axis that is easily possible using anisotropic materials because of their lattice structure. MagnetoCrystalline anisotropy energy refers as the change in energy required to rotate the magnetic dipole μ_mby an angle φ that is required to rotate μ_mfrom a preferred axis (φ=0). Body centered cubic crystal lattice structure with six preferred direction of magnetization is depicted in this paper.