Course Details
Subject {L-T-P / C} : PH6341 : Dielectric and Magnetic Properties of Materials { 3-0-0 / 3}
Subject Nature : Theory
Coordinator : Prof. Dillip Kumar Pradhan
Syllabus
PH6341: Dielectric & Magnetic Properties of Materials (3-0-0)
Review of crystallography: Point symmetry operations, Classification of Crystal Systems based on Symmetry operations, Introduction to point group and Space group.
Magnetic Properties and magnetic materials: Diamagnetism, Van Vleck paramagnetism Quantum theory of paramagnetism and Ferromagnetism. Temperature dependence spontaneous magnetization, magnetic domain, hysteresis, Exchange interaction. Molecular field theory( Weiss law). Technological application of magnetic materials & multilayer in memory device, sensors, magnetic bubbles Phenomenological theories of magnetic order- Interaction of atomic spins at large distance, molecular field theory, Spin waves, Ising model, Magnetic phase transition
Dielectric material: Classical & Quantum, theory of electronic polarizability and ionic polarizability, spontaneous polarization, Hysteresis, Frequency dependent polarization, Piezoelectricity 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.
Course Objectives
- To introduce the different types of magnetism along with the types of magnetic interactions.
- To explain the theoretical models for the interpretation of the magnetic properties of materials.
- 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.
Course Outcomes
Students will gain knowledge about the principles of different types of types of magnetic interactions, physics behind them, their properties and applications. The principles of different types of polarization mechanism and phase transitions phenomena in ferroelectric systems will also be developed.
Essential Reading
- N. A. Spaldin, Magnetic materials Fundamentals and device applications, Cambridge University Press , NA
- K. Uchino, Ferroelectric Devices, Marcel, Dekker, Inc. , NA
Supplementary Reading
- S. Blundell, Magnetism in condensed matter, Oxford University Press , NA
- M. E. Lines and A. M. Glass, Principle and Applications of Ferroelectrics and Related Materials, Clarndon Press, Oxford , NA
Journal and Conferences
- NA
- NA