Course Details
Subject {L-T-P / C} : PH6344 : Physics of Ferroelectric and Multiferroic Materials { 3-0-0 / 3}
Subject Nature : Theory
Coordinator : Prof. Dillip Kumar Pradhan
Syllabus
Fundamentals of dielectrics, Clausius-Mossotti relation, Dielectric dispersion and loss, Dielectric polarization and relaxation, Linear and non-linear dielectric, piezo-, pyro- and ferroelectric crystals Classification and properties of selected ferroelectrics, Structural, dielectric, electrical, spectroscopic and optical properties of ferroelectrics order-disorder and displacive type of phase transition, Phenomenological theory of Ferroelectrics: Dipole theory of phase transition, and thermodynamical theory of ferroelectrics: 1st order and 2nd order (Landau theory) phase transitions, critical phenomena, Lattice dynamics of Displacive phase transition, Quantum Ferroelectrics. Ferroelectric devices: pyroelectric detectors, transducers, computer memory and display devices, non-volatile memory devices.
Magnetic terms and definitions, Classification, theory and properties of magnetic materials. Magnetization processes, Domain walls and contribution to the free energy, Fundamentals of Multiferroic and Magnetoelectric materials, Origin of polarizations and magnetization and the property of mutual exclusiveness, Types of multiferroics and mechanism, Experimental techniques for measurements. Some recent advances, possible future applications of Multiferroic materials.
Course Objectives
- To Introduce the concept of different types of polarization phenomena in dielectric and magnetic materials.
- To provide the theory of the phase transition phenomena in different ferroelectric systems.
- To introduce the mechanism of existence of different ferroic order parameters and their coupling in multiferroic systems.
- To develop the principles behind the different ferroelectric and multiferroic devices.
Course Outcomes
Students will gain knowledge about the principles of different types of polarization and structural phase transitions phenomena in ferroelectric systems. The mechanism for combination of different ferroic order parameters for multiferroic device applications will also be developed.
Essential Reading
- K. Uchino,, Ferroelectric Devices,, Marcel, Dekker, Inc. New York, 2000.
- N. A. Spaldin,, Magnetic materials Fundamentals and device applications,, Cambridge University Press, 2003.
Supplementary Reading
- M. E. Lines and A. M. Glass, Principle and Applications of Ferroelectrics and Related Materials,, Clarndon Press, Oxford, 1977.
- S. Blundell, Magnetism in condensed matter, Oxford University Press, 2003