with Solved Example Problems | Crystallography
Subject and UNIT: Physics for Electronics Engineering: Unit I: Crystallography
Linear Density (L.D.): It is defined as number of atoms per unit length whose centres on the direction vector for specific crystallographic direction.
Crystallography
Subject and UNIT: Physics for Electronics Engineering: Unit I: Crystallography
Zinc sulphide structure is also known as the Zinc blende structure. This structure is identical to diamond structure except that two interpenetrating FCC sub- lattices are of different atoms one composed entirely of zinc atoms and the other entirely of sulphur atoms.
Crystallography
Subject and UNIT: Physics for Electronics Engineering: Unit I: Crystallography
Ionic solids are made up of cation (+ ion) and anions (- ion). Generally, the cations (+ ve) are smaller in size to anions. Sodium chloride and many other ionic crystals crystallize in rock salt structure which is also known as sodium chloride structure.
Subject and UNIT: Physics for Electronics Engineering: Unit I: Crystallography
The diamond cubic structure is a very important crystal structure. Besides diamond, the elemental semiconductors silicon and germanium also have this structure.
Subject and UNIT: Physics for Electronics Engineering: Unit I: Crystallography
In this type of crystal structure, the unit cell has one atom at each corner of the cube and one atom at the centre of each face.
Subject and UNIT: Physics for Electronics Engineering: Unit I: Crystallography
In this crystal structure, the unit cell has one atom at each corner of the cube and one atom at the body centre of the cube
Subject and UNIT: Physics for Electronics Engineering: Unit I: Crystallography
It is noted that a large number of metallic crystal structures have hcp, fcc and bcc structures. Simple Cubic (SC) structure is very rare in metals.
Crystallography
Subject and UNIT: Physics for Electronics Engineering: Unit I: Crystallography
Bravais showed that there are only 14 possible ways of arranging points in space such that the environment looks same from each point.
7 types with Example
Subject and UNIT: Physics for Electronics Engineering: Unit I: Crystallography
There are '7' types of crystal systems. They are 1. Cubic, 2. Tetragonal, 3. Orthorhombic, 4. Monoclinic, 5. Triclinic, 6. Rhombohedral, 7. Hexagonal
Crystallography
Subject and UNIT: Physics for Electronics Engineering: Unit I: Crystallography
The unit cell is constructed if the distance between two neighbouring lattice points along three directions and angles between them are known.
Definition, Figure | Crystallography
Subject and UNIT: Physics for Electronics Engineering: Unit I: Crystallography
The unit cell is defined as the smallest geometric figure which is repeated in three dimension to derive the actual crystal structure.
Subject and UNIT: Physics for Electronics Engineering: Unit I: Crystallography
The crystal structure is obtained by adding a unit assembly of atoms to each lattice point. This unit assembly is called basis.