Question

Write three properties of ferromagnetic materials.

Answer 1

To write the three properties of ferromagnetic materials, we primarily need to get us briefed up about the ferromagnetic materials.
The ferromagnetic materials are those substances which exhibit strong magnetism in the same direction of field, when an external magnetic field is applied to it. A domain is a tiny area in ferromagnetic materials with a specific overall spin orientation due to quantum mechanical effect which is an exchange reaction and when we consider some unpaired electrons, they will interact with each other between two atoms lining up themselves in the tiny region with the direction of magnetic field. This magnetism of ferromagnetic materials is called ferromagnetism.

Complete step by step answer:
Few of the main properties of ferromagnetic materials are given as follows:
1. When a rod made up of ferromagnetic material is placed in a magnetic field, it rapidly aligns itself in the track of the field and gets strongly attracted by the magnet.
2. The Ferromagnetic mechanism is not present in liquids and gases.
3. Magnetic susceptibility$\left( {{\chi }_{m}} \right)$ is large and positive, and decreases with the rise in temperature according to Curie-Weiss law.

Note: One is advised to refer and remember that Magnetic susceptibility$\left( {{\chi }_{m}} \right)$is a measure of how much a material will become magnetized in an applied external magnetic field. It is the ratio of intensity of Magnetization$\left( M \right)$ to Applied peripheral magnetic field strength$\left( H \right)$i.e. ${{\chi }_{m}}=\dfrac{M}{H}$.