Definition, Types | Crystal Defects or Imperfections | Crystal Physics
Subject and UNIT: Engineering Materials and Metallurgy: Unit 0: Review of Crystal Physics
The defects which take place due to imperfect packing of atoms during crystallisation are known as point defects.
Crystal Physics
Subject and UNIT: Engineering Materials and Metallurgy: Unit 0: Review of Crystal Physics
Crystalline imperfections can be classified on the basis of their geometry as follows:
Introduction | Crystal Physics
Subject and UNIT: Engineering Materials and Metallurgy: Unit 0: Review of Crystal Physics
Upto now, we have described only ideal crystals. An ideal crystal is one that contains no lattice defects.
Subject and UNIT: Engineering Materials and Metallurgy: Unit 0: Review of Crystal Physics
Consider a cube having two planes ABCD and EFCD inclined at an angle 'θ' with each other as shown in Fig.0.25.
Subject and UNIT: Engineering Materials and Metallurgy: Unit 0: Review of Crystal Physics
A direction, in general, may be represented in terms of three axes with reference to the origin.
Subject and UNIT: Engineering Materials and Metallurgy: Unit 0: Review of Crystal Physics
Consider a cube and a plane ABC as shown in Fig.0.24. Let the Miller indices of the plane be h, k and l.
Definition, Example | Crystal Physics
Subject and UNIT: Engineering Materials and Metallurgy: Unit 0: Review of Crystal Physics
If sets of equivalent lattice planes are related by the symmetry of the crystal system, then they are called planes of a family or form.
Definition, Calculation Procedure, Illustration, Features, Representation | Crystal Physics
Subject and UNIT: Engineering Materials and Metallurgy: Unit 0: Review of Crystal Physics
The orientation of a plane in a lattice is defined by the index of the plane.
Crystal Physics
Subject and UNIT: Engineering Materials and Metallurgy: Unit 0: Review of Crystal Physics
The crystal lattice may be regarded as made up of an aggregate of a set of parallel equidistant planes passing through the lattice points which are known as lattice planes.
Crystal Physics
Subject and UNIT: Engineering Materials and Metallurgy: Unit 0: Review of Crystal Physics
The Table 0.3 summarises the various characteristics of the unit cells.
Crystal Physics
Subject and UNIT: Engineering Materials and Metallurgy: Unit 0: Review of Crystal Physics
In M gram of material, there are N molecules i.e., mass of N molecules is M gram.
Definition, Formula, Calculation | Crystal Physics
Subject and UNIT: Engineering Materials and Metallurgy: Unit 0: Review of Crystal Physics
The void space in the unit cell is the vacant space left unutilized in the cell.