Technology 

What are the types of magnetic materials?

Joe Ford

What are the types of magnetic materials?

Types of Magnetic Materials

  • Paramagnetic materials. The materials which are not strongly attracted to a magnet are known as paramagnetic material.
  • Diamagnetic materials. The materials which are repelled by a magnet such as zinc.
  • Ferromagnetic materials.
  • Ferrites.

What is diamagnetic paramagnetic and ferromagnetic?

Diamagnetic materials are repelled by a magnetic field; an applied magnetic field creates an induced magnetic field in them in the opposite direction, causing a repulsive force. In contrast, paramagnetic and ferromagnetic materials are attracted by a magnetic field.

Are paramagnetic materials magnetic?

Paramagnetic materials include most chemical elements and some compounds; they have a relative magnetic permeability slightly greater than 1 (i.e., a small positive magnetic susceptibility) and hence are attracted to magnetic fields.

What are the characteristics of ferromagnetism?

Ferromagnetic materials have a large, positive susceptibility to an external magnetic field. They exhibit a strong attraction to magnetic fields and are able to retain their magnetic properties after the external field has been removed.

When ferromagnetic substances are heated strongly its magnetic moment?

Hence it is strongly attracted. When a ferromagnetic substance is heated above the Curie point, its domain gets disturbed a little bit, and hence the direction of the domains no longer remains aligned towards the magnetic field resulting in decreased attraction.

Which of the following substances when heated loses Ferrimagnetism and becomes paramagnetic?

Substances like Fe3O4 and MgFe2O4 lose ferrimagnetism on heating and become paramagnetic.

Is znfe2o4 Ferrimagnetic?

X-ray diffraction pattern of the ZnFe2O4 nanotubes annealed at 600°C. Below the blocking temperature, the ZFC and FC curves significantly diverge and the ZnFe2O4 nanotubes are in the ferrimagnetic state.

Why is ZnFe2O4 normal spinel?

Considering that Zn2+ is d10, Fe3+ is d5, and O2− is a weak field ligand, the CFSE values of both the normal and inverse spinel structures should be 0.

Is Fe3O4 ferromagnetic?

The magnetic interaction among iron ions at octahedral and tetrahedral sites is antiferromagnetic and that among octahedral ions is ferromagnetic; overall a ferrimagnetic arrangement of Fe3O4. Therefore, the net magnetic moment in Fe3O4 is due to Fe2+ ions (4 μB).

What do you mean by antiferromagnetic ordering?

In materials that exhibit antiferromagnetism, the magnetic moments of atoms or molecules, usually related to the spins of electrons, align in a regular pattern with neighboring spins (on different sublattices) pointing in opposite directions.