Material Science Full Premium Lecture Notes. Useful for Engineering Students, Specially for Candidates preparing for GATE Exams.
Content :
- Basics
- Bonds in material
- 1. Primary bond
- 2. Secondary bond
- Primary bond
- 1. Ionic bond
- 2. Covalent bond
- Secondary bonds
- 3. Metallic bond
- 4. Vender wall bond
- Structure of materials
- 1. Cubic cell
- 2. Tetragonal cell
- 3. Orthorhombic cell
- 4. Monoclinic cell
- 5. Hexagonal cell
- Miller indices
- Structure of monoclinic solids and defects
- Shottky defects
- Interstitical effect
- Frankel defect
- Substitutional defect
- Classification of material in material science point of view
- 1. Metals and alloy
- 2. Ceramics
- 1. Magnetite
- 2. Cu2o
- 3. Sic
- Application
- 1. Thermistor
- 2. Rectifier
- 3. Variable resistor and rectifier
- Organic polymer
- Composite material
- Classification of material in electrical engg point of view
- 1. Conductors
- 2. Dielectrical material
- 3. Magnetic material
- 4. Semi-conductors
- Property of material
- 1. Mechanical property
- 2. Thermal property
- 3. Electric property
- 4. Magnetic property
- 5. Physical property
- 6. Chemical property
- 7. Optical property
- 8. Aconstical property
- Static field
- a. Microscopic
- b. Macroscopic
- Coulombs force law
- Electric dipole
- Dielectric material
- Isotropic medium
- Non-isotropic medium
- Mechanism of polarization or types of polarization
- 1. Electronic or induced polarization
- 2. Ionic polarization
- 3. Oriental polarization
- 4. Interfacial or space-charge polarization
- Static dielectric constant of solids and liquid
- 1. Elemental solid dielectrics
- 2. Ionic non-polar solid dielectrics
- 3. Polar solid dielectric
- Electrostriction
- Inverse effect
- Application
- 1. Gramophone
- 2. Air transducers
- 3. Accelerometers
- 4. Ultrasonic flow detector
- 5. Under water (sonar transducers)
- 6. Filter, resonators etc
- Pyroelectric effect
- Ferro electric materials
- Antiferro electricity
- Capacitors of high frequency
- Electronic polarization at high frequency
- Clausius mosotti equation for non-polar solids at high frequency
- Orientational polarization at high frequency
- MAGNETIC MATERIALS
- 1. Biot savart law
- Magnetic dipole moment
- Magnetic material and magnetization
- Classification of magnetic materials
- 1. Diamagnetic material
- 2. Paramagnetic materials
- 3. Ferro magnetic materials
- Magnetic anisotropic
- Magnetostriction
- Villari effect
- 4. Anti-ferromagnetic materials
- 5. Ferromagnetic materials
- General electric and magnetic properties of ferrites
- Application of ferrites
- Hard magnetic materials
- 1. High permeability
- 2. High coercive force
- 3. The remanant flux density must be high
- 4. High curie temperature to minimize the easy demagnetization
- 5. Low cost
- De Broglie
- Joules law
- Factors affecting resistivity of conducting materials
- Change of resistivity with different parameters
- 1. Change of row due to temperature
- 2. Change of row to alloying
- 3. Change of row to cold work
- a. Hard drawn
- b. Annealing
- c. Super conductivity
- d. Affect of magnetic field on superconductivity
- Flux exclusion
- Soft super conductors
- Hard super conductors
- Effect of different parameters on super conducting materials
- 1. Frequency effect
- 2. Isotope effect