Engineering applications Based on their properties, they have the following applications. Since there is no loss in power (zero resistivity) super conductors can be used for the transmission of power over very large...
Category - Physics
Based on the value of superconducting transition temperature, superconductors are divided into two categories: (i) Low temperature superconductors (ii) High temperature superconductors S.No Low Temperature superconductor High...
Impurities : When the impurities are added to superconducting material, the properties can be changed abruptly. In particular the magnetic properties can be changed. Size : If the size is reduced below 100μm the superconducting...
In 1911, Kammerlingh onnes while studying the electrical behaviour of metals at low temperatures, he observed that the resistivity of impure metals decreased with temperature and had a finite valve at 0K. But for mercury the...
Based on permanent magnetic dipoles, materials are further classified into Antiferromagnetic materials Ferrimagnetic materials Antiferromagnetic materials Definition: When the magnitudes of all the antiparallel aligned magnetic...
Based on the area of the hysteresis loop, the magnetic materials are classified into soft and hard magnetic materials. Generally the magnetic materials are classified into two types. They are Soft Magnetic materials Hard...
The word hysteresis literally means lagging behind. “Hysteresis is the phenomenon of lagging of magnetic induction (B) behind the magnetising field (H) of a ferromagnetic material when the specimen is at critical...
Weiss put forward a second hypothesis, namely domain hypothesis. He postulated that the atomic dipole of an atom strongly interacts to the neighbouring atom by a quantum mechanical interaction called exchange interaction. He...
S.No Diamagnetic Material Paramagnetic Material Ferromagnetic Material 1. It is a material in which there is no permanent dipole moment (or) magnetic moment in each atom. The external magnetic field decrease the magnetic...
Definition : If the interaction among permanent dipoles is strong such that all the dipoles line up in parallel, the material is Ferromagnetic. or The substances which when placed in a magnetic field are strongly magnetised in...
