Magnetic susceptibility and ferromagnetic substances, Mechanical Engineering

Magnetic Susceptibility and Ferromagnetic Substances:

Magnetic Susceptibility: The magnetic susceptibility (c) of a substance is defined  as the ratio of the intensity of magnetisation (I) and the intensity of the applied magnetic field (H). It has no units 

Magnetic retentivity: Retentivity of  a magnetic material is a property by virtue of which it retains certain amount of intensity of magnetisation even after the removal of applied magnetic field.

Diamagnetic Substances: Diamagnetic Substances are those in which the resultant magnetic moment of individual atoms is zero. Ex: Copper, Bismuth, Air, Water, Gold, Alcohol, Mercury, Hydrogen.

Para magnetic Substances (Mar 99): Paramagnetic Substances are those in which the resultant magnetic moment of individual atoms is not zero.

Ferromagnetic Substances: Ferromagnetic substances are those in which the resultant magnetic moments of individual atoms align themselves in parallel because of a special effect present in  them giving rise to spontaneous magnetisation. Ex: Iron, Cobalt, Nickel, Gadolinium, Dysprosium

Domain: Domain in a ferro magnetic specimen is a small local region in which all the magnetic dipoles align parallel to each other giving to certain magnetisation with in the domain.

 

 

Posted Date: 10/16/2012 2:57:51 AM | Location : United States







Related Discussions:- Magnetic susceptibility and ferromagnetic substances, Assignment Help, Ask Question on Magnetic susceptibility and ferromagnetic substances, Get Answer, Expert's Help, Magnetic susceptibility and ferromagnetic substances Discussions

Write discussion on Magnetic susceptibility and ferromagnetic substances
Your posts are moderated
Related Questions
You are required, as part of a small team, to design a remote controlled buggy that can be made to move forwards, backwards and from side to side. The basic buggy and motors are pr

The function of the impellers is to: (i) reduce bubble size thereby increasing the surface area for oxygen transfer, and (ii) maintain a uniform environment, nutrient supply and he

Q. Mechanical Data for Line Designation Tables? Line Designation Tables (LDT's) are initially generated by the Piping designers. Design conditions are inputed by the Process di

Q. What is Slush moulding? Slush moulding is an excellent method for producing open-end objects. It is an inverse process of dipping, in which the inside of the mould is coated

Helium Helium (He) is an inert, very light monoatomic gas, of atomic weight of 4. It is obtained by separation from natural gas. Helium is refined to a purity of min.  99.99

write a notes of system of forces and classified it a/c to orintenssion of forces

Q. Explain Double Bolting? Where low strength bolts must be used, initial bolting with higher strength low temperature bolts may be necessary to minimize accumulative strain an

Forces in the members of the truss: Find out the forces in the members AB , BC , AC of the truss shown in the figure drawn adjacent. Sol.: First determin

#wHAT WILL BE THE PULLEY CRITERIA TO DECIDE THE RPM

Calculate Additional force required to maintain equilibrium: Fo r the system shown in figure find the additional single force required to maintain equilibrium. Sol.: L