Electroceramics (Prof. Ashish Garg, IIT Kanpur) | Materials Science

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 01 - Introduction

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

References

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.