Distinguish between ferromagnetic and paramagnetic materials, Electrical Engineering

Assignment Help:

Distinguish between ferromagnetic and paramagnetic materials, mentioning at least one example of each.

Ferromagnetic Materials: These are materials wherein magnetic dipoles interact in a manner which they aim to line up in parallel. Ferromagnetic substances have a number of domains or regions that are spontaneously magnetized. This direction of magnetization varies by domain to domain. And the resultant magnetization is zero or may nearly zero. The relative permeability is extremely high. Presence of external magnetic field, the ferromagnetic materials find strongly magnetised and exhibit hysterisis loop. The susceptibility of these is specified by

 χ = C / T - TC , here C is curie constant, TC is the curie temperature above that the ferromagnetic material exhibits paramagnetic behaviour. The ferromagnetic materials are broadly used in industries. Examples are: Iron, nickel and cobalt.

Paramagnetic Materials: The atoms of these materials have permanent magnetic dipoles. Individual dipoles are oriented in random fashion therefore resultant magnetic field is negligible or zero. For these materials relative permeability is slightly greater than unity and this is independent of magnetizing force. In presence of external magnetic field, paramagnetic materials find weakly magnetised into the field direction and the susceptibility is specified by

 χ = C /T , here C is a curie constant and T is the temperature. Examples are: Chromium chloride, manganese sulphate, chromium oxide and air.


Related Discussions:- Distinguish between ferromagnetic and paramagnetic materials

Obtain an expression for the closed-loop transfer function, Q. A noninverti...

Q. A noninverting op-amp circuit and its closed-loop representation are given in Figure. Obtain an expression for the closed-loop transfer function H(ω) = Y (ω)/X(ω) and comment on

Spread time - power semiconductor devices , Spread Time (t s ) During  ...

Spread Time (t s ) During  spread time anode  voltage  falls from 10% I a  to the  on state  voltage  drop  and anode  current  rises  from 90% I a   to final  value  of anode

Draw the circuit of battery having of three cells in series, One battery ha...

One battery having of three cells in series. External resistance is 5 Ω E.m.f each cell is 1.5V and internal resistance is 0.2?. Measure the current flow and draw the circuit.

Find the largest current out, Q. Consider a BJT switch connected to the nex...

Q. Consider a BJT switch connected to the next stage, as shown in Figure, in which iout is likely to be negative when v out is high. Assume V CC = 5 V, R C = 1k, and the high r

What is meant by cross-compiler, Ans) A program runs on one machine and imp...

Ans) A program runs on one machine and implements on another is known as cross-compiler Programs which compile on One Machine and implements on another machine is known cross

Customer indexing, Customer Indexing: Customer indexing (CI) is a meth...

Customer Indexing: Customer indexing (CI) is a method for enumerating the total number of consumers in a utility and tagging them to their respective poles, transformers and f

Write a control word for counter 1 of 8253 / 8254, Write a control word for...

Write a control word for counter 1 of 8253 / 8254 that selects the following options:  load least significant byte only, mode 5 of operation and binary counting.  Then write an ins

Explain the or gates - microprocessor, Explain the OR Gates - microprocesso...

Explain the OR Gates - microprocessor? The OR GATE has high or logic 1 output if any of the inputs are high. The output Q is true if input A OR input B is true (or both of t

Limitations, Limitations: 1. Silicon transistors do not function at vo...

Limitations: 1. Silicon transistors do not function at voltages much higher than about 1,000 volts (SiC devices can be worked as high as 3,000 volts). In difference, electron

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd