Question

Draw the magnetic field change curve (hysteresis curve) of the magnetization of a ferromagnetic material. Demonstrate permanent magnetization (MR), saturation magnetization (MS) and coercive field values (HC) on the curve. Briefly explain what these terms mean.
a) Briefly describe the Pauli exclusion principle?
b) Find the lattice vectors of conventional and primitive unit cells and the angles between the lattice vectors for surface centered cubic (FCC) lattice. Find the volume of the unit cells to obtain the ratio of the volume of the conventional cell to the volume of the primitive cell.

Answer 1

Retentid mce im ce opposite e. rection-Bmax の Paul --taclusion principle-states the electrons can have the same four electromic quantum mumbers . As an only tuo electrons, ie two electon s must have opposite spins b Fom Face Centrred CubiG =A(かナ2) We Kmou, the volume of a conventiomal Unit cellisa w Volume tive cell n ACc ut + 02 ете

2. 冷- A.A.ー プは 3ぐ a 13 91 3 4 t-fcc-prim ihne-cell ,'。 Volume o is Ratio of olume of the conrentional Cell to the volume of the. pmit