Classes of magnetic materials: diamagnetism, Physics

Assignment Help:

Diamagnetism is a basic property of all matter, though it is generally very weak. It is due to the no cooperative behaviour of oepenrbiting electrons when exposed to an applied magnetic field. Diamagnetic substances consist of atoms which have no net magnetic moments. (Each and every orbital shell is filled and there are no unpaired electrons). When a diamagnetic substance such as a silicon crystal is placed in a magnetic field, the magnetization vector M in the materials in the opposite direction to the applied field. Hence the resulting field B within the material is less than μ0H. Therefore the susceptibility is negative. The negative susceptibility can be interpreted as the diamagnetic substance trying to expel the applied field from the material. When a diamagnetic specimen in placed in a no uniform magnetic field, the magnetization M of the material is in opposite direction to B and the specimen experiences a net force toward smaller fields, as dedicated. Put a note that when the field is zero then the magnetization is zero. The other characteristic behaviour of diamagnetic materials is that the susceptibility is temperature independent some well known diamagnetic substances are quartz calcite, water, copper, silver, gold, etc.

 


Related Discussions:- Classes of magnetic materials: diamagnetism

Galilean relativity, Galilean Relativity Galilean invariance or Galilea...

Galilean Relativity Galilean invariance or Galilean associatively states which the laws of motion are the similar within all inertial frames. Galileo Galilei first define this

Pn junction is represented as a diode, Pn junction is represented as a diod...

Pn junction is represented as a diode Pn junction is represented as a diode D in the emitter as represented in figure. If a voltage VBB is applied between bases with emitter op

What is synchronous condenser, Synchronous motor can work at any power fac...

Synchronous motor can work at any power factor i.e. lagging, unity or at leading power factor. Synchronous motor when used to better the power factor only is known as " Synchronou

Explain internal or external forces, Explain internal or external forces ...

Explain internal or external forces Forces can be internal or external. For instance the mutual attraction of atoms within a block of wood are known as internal forces. Somethi

Thomson''s effect, In Thomson's effect we pact with only metallic rod and n...

In Thomson's effect we pact with only metallic rod and not with thermocouple as in Peltiers effect and Seebeck's effect. (That's why sometimes it is called as homogeneous thermo el

Calculate the magnitude of the axial force, The symmetrical scissors truss ...

The symmetrical scissors truss shown below is supported at point A and D. The support at D is a rocker bearing and does not produce a horizontal reaction.  A, B, C, D, E & F are pi

Determine the magnitude of the force in direct current, The weightless trus...

The weightless truss shown below supports loads at point A & B and is fastened to the supports at C & E.  The value of F1 in kN is given in P13 and the value of F2 in kN is given i

Can you explain normal mode oscillation, Can you explain normal mode oscill...

Can you explain normal mode oscillation? Compare between Q 1 and Q 2 mode oscillation

What is interference of light, Explain interference of light? Write two ess...

Explain interference of light? Write two essential conditions for sustained interference pattern to be produced on the screen. Illustrate a graph showing the variation of intens

What are the objectives of annealing, What are the objectives of annealing?...

What are the objectives of annealing? Slow cooling rate from the eutectoid temperature yields course pearlite - a mixture of relatively coarse crystals of ferrite and cementite

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