Question

List some dielectric properties of solid

Answer 1

Answer:

HELLO guy!

Explanation:

i) They may arrange themselves in a systematic manner so that they have a net dipole moment.

ii) They can also arrange themselves in a way such that the net dipole moment becomes zero.

iii) Sometimes there is no dipole in the crystal and only ions are present

Answer 2

Answer:

piezoelectricity

pyroelectricity

ferroelectricity

anti ferroelectricity

Explanation:

piezoelectricity- Substances in which the dipole aligns itself in an ordered manner to produce a net dipole moment, exhibit piezoelectricity and are known as piezoelectric substances.

pyroelectricity- When some of the polar crystals are heated they produce a small electric potential. The electric potential thus produced is known as pyroelectricity. This phenomenon is termed as pyroelectric effect.

ferroelectricity- Some of the piezoelectric crystals have permanent dipoles and are called as ferroelectric crystals. Even in the absence of electric field they retain the arrangement of dipoles. By applying an external electric field the direction of polarisation of dipoles in these kinds of crystals can be reversed. Ferroelectricity is analogous to ferromagnetism.

Example: Rochelle’s salt.

anti ferroelectricity- The effect under which the net dipole moment of a piezoelectric crystal is zero is referred to as anti-ferroelectricity.