Types of magnetic materials and their characterization. Hysteresis:
Spontaneous and saturation magnetization. Permeability, susceptibility
and coercive force. Demangnetization effects. Magnetic anisotropy.
Domains : size, shape and motion. Bloch wall.
Magnetization processes. Exchange interactions. Magnetism in elements,
alloys and compounds.
Measurement of magnetic moment, permeability and Curie temperature.
Faraday balance. Vibrating sample magnetomerter. Rotating sample
magnetomerter. Torque magnetometer.
Soft and hard magnetic materials. Materials for application in
transformers, permanent magnets and motors: composition and
preparation techniques. Eddy currents and loss mechanisms. Ferrites
and their application.
Magnetostriction : principles and materials for transducer application.
Propagation of electromagnetic waves in a magnetic medium. Magnetic
storage techniques. Magneto-optics. Bubble memories and curie point
writing.
Amorphous magnetic materials. Production of ultrahigh magnetic fields.
- Teacher: veeturi Veeturi Srinivas