Subject Code: ML4L002 | Name: Elements of electroceramics | L-T-P: 3-0-0 | Credit: 3 |
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Pre-Requisites: Introduction to Materials Science and Engineering; Thermodynamics of Materials; Physical Metallurgy. | |||
Introduction: Brief review crystal structure of materials. Review of selected topics of introductory solid state physics. Structure of crystalline ceramics: Structure rules with special emphasis on radius ratio concept; Oxide structures, Silicate structures; Derivative structures and polymorphism. Synthesis methods of ceramic materials:Bulk preparation routes; Thin film preparation methods; Defect chemistry and defect equilibria: Point defects; Kröger–Vink notation; Defect reactions; Defect equilibria; Defect equilibrium diagram. Conduction in ceramics: Diffusion; Mobility and diffusivity;Ionic Conductors and applications. Linear dielectric ceramics: Theory of polarization, Frequency dependence; Dielectric relaxation;Equivalent circuit representation and impedance analysis; Dielectric breakdown. Non-linear dielectric ceramics: Classifications; Piezoelectrics:Direct and converse piezoelectric effects, Pyroelectrics;Ferroelectrics: Curie-Weiss law, domains;Applications. Magnetic Materials: Magnetism- classical and quantum approaches: diamagnetism, paramagnetism, ferromagnetism, antiferromagnetism and ferrimagnetism; Structures of magnetic ceramics;Applications. Multiferroic and magnetoelectric ceramics:Theory;Magnetoelectriccoupling; Type I and Type IImultiferroics; Applications. Superconducting ceramics: Meissner effect; Type I and II Superconductors;High temperature superconductivity in ceramics; Applications. |
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