Magnetic Materials

Video Lessons & Revision Notes

Magnetic Materials - Basic Concepts
Magnetic Materials - Basic Concepts
1. Magnetic Materials - Basic Concepts
In this 37 mins Video Lesson
Basic Concepts, Magnetic Dipole Moment and Bohr Magneton, Orbital and Spin Magnetic Moment, Magnetization, Magnetic Susceptibility, Flux Density, Relative Permeability, Classification based on Relative Permeability, Diamagnetic Materials, Paramagnetic Materials, and other topics.
Langevin`s Theory of Diamagnetism and Paramagnetism
Langevin`s Theory of Diamagnetism and Paramagnetism
2. Langevin`s Theory of Diamagnetism and Paramagnetism
In this 54 mins Video Lesson
Langevin's Theory of Diamagnetism, Langevin's Theory of Paramagnetism, Langevin's Function, Saturation value of Magnetization, Curie's Law, and other topics.
Ferro magnetic and Hard & Soft Magnetic Materials
Ferro magnetic and Hard & Soft Magnetic Materials
3. Ferro magnetic and Hard & Soft Magnetic Materials
In this 46 mins Video Lesson
Basic Concepts, Retentivity and Coercivity, Weiss Theory of Ferromagnetism, Ferromagnetic Domains, Explanation of Hysteresis Loop using Domains, Hysteresis Loss, Hard and Soft Magnetic Materials, Applications of Hard and Soft Magnetic Materials, and other topics.
Magnetic Circuits
Magnetic Circuits
4. Magnetic Circuits
In this 29 mins Video Lesson
Magnetomotive Force, Magnitude of mmf, Reluctance and Permeance, Laws of Magnetic Circuit, Numericals on Magnetic Circuit, and other topics.

Revision Notes

Origin of magnetization using Atomic Theory; classification of magnetic materials based on Susceptibility value; Qualitative treatment of Langevin’s and Weiss equation for Dia, Para and Ferro magnetic materials (no derivation); Microstructure of ferromagnetic solids- Domains and Hysteresis loss;

Soft & hard magnetic materials and their uses; Magnetic circuits and microscopic Ohm’s Law.

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