Electrical and Magnetic Properties of Solids

Which of the following elements which, when used as a dopant in Silicon would convent it into an $n$-type semiconductor?

When silicon is doped with aluminium

The electronic band of a solid is partially filled. This solid is

What is effect of Pyroelectric coefficient with Temperature?

What are applications of pyroeletricity?

Pyroelectricity is an application of dielectric properties of solid.

What is Pyroelectricity or Pyroelectric Material?

Which of the following is a dielectric property of solids?

Assertion : Semiconductors are solids with conductivities in the intermediate range from ${10}^{-6}-{10}^4 {\mathrm{ohm}}^{-1} {\mathrm{m}}^{-1}.$

Reason : Intermediate conductivity in semiconductor is due to partially filled valence band.

Match the following:

Which one of the following is NOT ferromagnetic?

Pure silicon doped with phosphorus is

To get an n-type semiconductor from silicon, it should be doped with a substance with valency:

Which substance shows anti-ferromagnetism?

Which of the following substance is ferrimagnetic?

Paramagnetic substances are those in which the individual atoms, ions or molecules possess a permanent magnetic dipole moment. In the absence of an external magnetic field, the atomic dipoles of paramagnetic substance are as below:-

The one that is extensively used as a piezoelectric material is:
 

Which of the following is true about the charge acquired by $\mathrm{p}$-type semiconductors?

Pure germanium is an example of-

Which kind of defects are introduced by doping?