Question

write short note on Schottky defect

Answer 1

A Schottky defect is a type of point defect in a crystal lattice named after Walter H. Schottky. In non-ionic crystals it means a lattice vacancy defect. In ionic crystals, the defect forms when oppositely charged ions leave their lattice sites, creating vacancies.

Answer 2

Answer:

Write short note on Schottky defect.

Explanation:

• What is Schottky defect? Schottky defect is an excitation of the site occupations in a crystal lattice leading to point defects named after German physicist Walter H. Schottky. He was awarded the Royal Society's Hughes medal in year 1936 for the discovery of this defect.
• Schottky defect is small shot effect. This vacancies are further created  to maintain a neutral charge in the crystal.
• Schottky defect is different from Frenkel defect.
• Some characteristic of Schottky defect are- There is small size difference between cation and anion.
• Atoms move permanently out of the crystal.
• Mainly two vacancies can be formed.
• Schottky defect mostly occur in highly ionic compounds or highly coordinated compounds.

Hence, this is Schottky defect.

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