Cold Rolled Grain Oriented (CRGO) Silicon Steel | Properties Applications

The addition of silicon(Si) in iron(Fe) in right proportions with the help of certain manufacturing process significantly improves the magnetic and electrical properties of iron. By the end of 19th century, it was discovered that the addition of silicon to iron significantly improves the resistivity of iron and so silicon steel or what we know … Read more

Ferroelectric Materials

The first discovered ferroelectric material is Rochelle salt by Valasek in 1921. These materials can produce spontaneous polarization. By inverting the direction of applied electrical field, the direction of polarization of these materials can be inverted or changed (figure 1). This is called switching. It can also maintain the polarisation even once the field is … Read more

Soft Magnetic Materials

First of all we need to keep certain points in mind before defining the soft magnetic materials. Remanent Induction: It is actually the value of induction which residue, once the material is magnetized and then the magnetizing field is decreased to zero. It is denoted by Br. Coercive Force: It is the amount of negative … Read more

Hard Magnetic Materials

For understanding the hard magnetic materials, we have to know certain terms. They are as follows: Coercivity: The capability of a ferromagnetic material to hold up (resist) a peripheral magnetic field without getting demagnetized. Retentivity (Br): It is the amount of magnetism that a ferromagnetic material can maintain even after the magnetic field is decreased … Read more

Ferromagnetic Materials

The ferromagnetic materials are those substances which exhibit strong magnetism in the same direction of the field, when a magnetic field is applied to it. First, we have to know what a domain is. It is actually a tiny area in ferromagnetic materials with a specific overall spin orientation due to quantum mechanical effect. This … Read more