1.

How arematerialsclassifiedbasedon theirmagneticproperties?

Answer»

Solution :On the basisof magneticpropertiesmateriescan bebroadlyclassified as
(a)Paramagneticmaterials
( b)diamagneticmaterials besides these there arefeeromagneticandantiferromagneticmaterials.
(i) Materials with noelementarlymagneticdipolesare diamagneticin other r words aspeceswithall pairedelectrons exhibitsdiamagnetism.
(ii) Thiskind of materials are repelledby the magneticfieldbacuaseteh PRESENCEOF externalmagneticfileda MAGNETICINDUCTION is introducedto the materialwhichgeneratesweakmagneticfieldthatopposethe appliesfield .
(III) Paramagneticsolidshavingunpairedelectronspossesmagneticdipoleswhichare isolatedfrom one another .
(iv ) In theabsenceof externalmagneticfieldthedipoles are arranged at random andhence the solidshowsno netmagnetism .
(V ) BUTIN the presenceof magneticfield the dipolesar alignedparallelto thedirectionof the appliedfieldadn therfore they areattracted byan externalmagnetic field.
(v i)Ferromagneticmaterials havedomainstructureand ineach domainthe magneticdiples are arranged.


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