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Electroceramics

Electroceramics. Instructor: Prof. Ashish Garg, Department of Materials Science and Engineering, IIT Kanpur. This course is an advanced level course for UG students and early PG students of Materials Science and Metallurgy. Various aspects of electronic ceramics are covered in this course which start with emphasis on how structures form in such materials. Then, defects chemistry and defect equilibria in such materials are discussed while elucidating the effect of defect chemistry on ceramic properties. This will be followed by a treatment of defect diffusion and ionic conductivity in electronic ceramics. Once this framework is established, students will then be exposed to fundamentals and specific cases of linear dielectric as well as ferroics such ferroelectrics and ferromagnetic ceramics. Students will also be familiarized with rather novel phenomenon of Multiferroics briefly. Finally, the course will finish with emphasis on important bulk and thin films processing methods. (from nptel.ac.in)

Lecture 34 - Diamagnetism, Paramagnetism


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Ceramic Structures
Lecture 01 - Introduction, Review of Fundamentals of Structure and Bonding in Materials
Lecture 02 - Interstices, Ceramic Structures
Lecture 03 - Zinc Blende Structure, Spinel Structure, Primitive Cubic Structures
Lecture 04 - Perovskite Based Structures: YBCO, LSCO, Wurtzite, Corundum, Lithium Niobate
Defect Chemistry and Defect Equilibrium
Lecture 05 - Defects, Kroger-Vink Notations, Defect Reactions
Lecture 06 - Metal Deficient Oxides, Concentration of Intrinsic Defects
Lecture 07 - Intrinsic and Extrinsic Defects, Defect Equilibria
Lecture 08 - Defect Equilibria (cont.)
Lecture 09 - Limiting Conditions; Equilibrium Diagram
Lecture 10 - Defect Equilibria (cont.)
Defects Diffusion and Conduction
Lecture 11 - Diffusion: Diffusion Kinematics, Diffusivity, Diffusion Mechanisms
Lecture 12 - Diffusion in Lightly Doped NaCl, Diffusion Properties: Mobility
Lecture 13 - Ionic Conduction, Ionic Conductivity, Total Conductivity
Lecture 14 - Effect of Doping on Conductivity, Fast Ionic Conductors
Lecture 15 - Electrochemical Potential, Applications of Ionic Conductors
Dielectric Ceramics
Lecture 16 - Key Concepts of Dielectric Materials: Dipole Moment, Polarization, Capacitance
Lecture 17 - Mechanisms of Polarization: Electronic, Ionic, Dipolar, Interface
Lecture 18 - Determination of Polarizability: Electronic and Ionic Polarizability
Lecture 19 - Dipolar Polarizability
Lecture 20 - Effect of AC Field on Dielectric Behaviour
Lecture 21 - Frequency Response of Electronic and Ionic Polarization
Lecture 22 - Frequency Response of Dipolar Polarization
Lecture 23 - Frequency Response: Relaxation
Lecture 24 - Frequency Dependence of Dielectric Constants
Nonlinear Dielectrics
Lecture 25 - Nonlinear Dielectrics
Lecture 26 - Ferroelectric Ceramics
Lecture 27 - Thermodynamic Point of View of Ferroelectric Phase Transition
Lecture 28 - Thermodynamic Point of View of Ferroelectric Phase Transition (cont.)
Lecture 29 - Ferroelectric Domains
Lecture 30 - Piezoelectric Ceramics
Lecture 31 - Common Piezoelectric Materials
Lecture 32 - Pyroelectric Materials
Magnetic Ceramics
Lecture 33 - Basics of Magnetism
Lecture 34 - Diamagnetism, Paramagnetism
Lecture 35 - Ferromagnetism
Lecture 36 - Antiferromagnetism, Ferrimagnetism
Lecture 37 - Magnetic Ferrites: Spinel and Hexagonal Ferrites, Yttrium Iron Garnets
Lecture 38 - More on Magnetic Ferrites
Special Electroceramics
Lecture 39 - High Temperature Superconducting Ceramics
Lecture 40 - Multiferroic and Magnetoelectric Materials
Lecture 41 - Synthesis Methods for Electroceramics