Syllabus

[8-hours]
Basic electromagnetism, atomic origin of magnetism, Magnetic materials: Langevin theory of Diamagnetism and paramagnetism, Quantum theory of paramagnetism. Ferromagnetism: Weiss theory, Mean field approximation, exchange interaction and nature of exchange integral, Magnetic domains and domain walls, Hysteresis. Antiferromagnetism: molecular field theory, spin-flopping. Ferrimagnetism, indirect exchange interaction.

[8-hours]
Hard and soft magnetic materials, Non-conventional magnetism: super-paramagnetism and spin glass, Magnetism in Metals and alloys, Spin waves, Magnetic phase transition, Altermagnetism. Magnetometry: Vibrating sample magnetometer and SQUID, Neutron diffraction, Mossbauer spectroscopy and microscopic magnetic imaging.

[6-hours]
Technological application of magnetic materials & multilayer in memory device, spin electronics, magnetic sensors, magnetic information storage: magnetic bubbles.

[8-hours]
Dielectric material: Classical & Quantum, theory of electronic polarizability and ionic polarizability, Clausius–Mosotti relation, spontaneous polarization, Hysteresis, Frequency dependent polarization, Dielectric breakdown, Piezoelectricity.

[6-hours]
An introduction to relaxor ferroelectricity. Perovskite crystal structure, Ferroelectric phases and domains, Curie Weiss behavior, Diffuse phase transition, Physics of Relaxor ferroelectricity, Application of ferroelectricity and Ferroelectric devices.

To introduce the concept of different types of polarization phenomena in dielectric materials.

To provide the theory of the ferroelectric phase transition phenomena in different types of ferroelectric systems.

To introduce the different types of magnetism along with the types of magnetic interactions through theoretical models.

To explain various magnetometry and possible modern day applications of magnetic materials.

The knowledge about the principles of different types of types of magnetic interactions, their properties and applications.

Knowledge on the different type of magnetometer and few other spectroscopic method to determine the magnetism

The idea of Magnetic materials usefulness for device fabrications will also be developed

The basic knowledge on different types of dielectrics and related theory for the electrical processes.

The principles of different types of polarization mechanism and phase transitions phenomena in ferroelectric systems along with its device applications will also be covered.

S. Blundell,, Magnetism in condensed matter, Oxford University Press. , 2nd Edition

K. Uchino, Ferroelectric Devices, CRC Press. , 2nd Edition

David Jiles, Magnetism and Magnetic materials,, CRC Press. , 3rd Edition

M. E. Lines and A. M. Glass, Principle and Applications of Ferroelectrics and Related Materials, Clarndon Press, Oxford , 1st Edition