GENERAL GEOLOGY

Detailed explanation-1: -BCC stands for Body Centred Cubic. It is a type of atomic arrangement and is a relatively “loosely” packed structure (atomic packing factor = 0.68). BCC can be formally termed a cubic lattice with the centre position fully equivalent to each of the eight corners.

Detailed explanation-2: -As the name itself suggests, the body centred cubic structure has a cube-shaped unit cell. The length of each edge is given by the lattice parameter ‘a’. There is an atom at each corner of the cube, similar to the simple cubic structure. However, there is also another atom at the centre of the cube.

Detailed explanation-3: -BCC – Body Centred Cubic – and FCC – Face Centred Cubic – are descriptions of the arrangement of atoms in crystal structures.

Detailed explanation-4: -In the body-centred cubic (bcc) arrangement, there is an additional iron atom in the centre of each cube. In the face-centred cubic (fcc) arrangement, there is one additional iron atom at the centre of each of the six faces of the unit cube.

Detailed explanation-5: -2. Body-centred Cubic Unit Cell (BCC) A BCC unit cell has atoms at each corner of the cube and an atom at the centre of the structure. The diagram shown below is an open structure. According to this structure, the atom at the body centre wholly belongs to the unit cell in which it is present.