Welcome to electrical and electronics engineering Q&A site...

Welcome to electrical and electronics engineering discussion website, Please login or register to continue.

Join our WhatsApp group

Subscribe To Our YouTube Channel

Classify magnetic materials and explain in brief.

Amazon Shopping

Please log in or register to answer this question.

1 Answer

0 votes

Classification of magnetic materials: 1)Paramagnetic materials 2)Diamagnetic materials 3)Ferromagnetic materials 

a. Paramagnetic materials: The relative permeability of such materials is very less but positive (slightly greater than 1) so these materials cannot be magnetized and not suitable to carry the flux from one place to the other. In their case, the individual atomic di-poles are oriented in a random fashion. Following are the paramagnetic materials: magnesium, molybdenum, lithium, Aluminium, Titanium, Platinum. 

b. Diamagnetic materials: These materials have relative permeability slightly less than one. Such materials are magnetized opposite to the direction of the external field and due to this they are pushed out of regions of the highest field intensity. So diamagnetic materials are not useful in magnetic applications. Most elements in periodic table, including Copper, Silver and Gold fall in this category. 

c. Ferromagnetic materials: Relative permeability of ferromagnetic material is very large. These materials are very easily magnetized and used as conductors of magnetic flux from one place to other. These materials are characterized by the presence of parallel alignment of permanent magnetic dipole moments in a single direction. In the ferromagnetic materials the magnetization arises spontaneously i.e. in the absence of external magnetic field. Following are the ferromagnetic materials: Iron, Cobalt, Nickel.

Amazon Shopping

Welcome to Q&A site for electrical and electronics engineering discussion for diploma, B.E./B.Tech, M.E./M.Tech, & PhD study.
If you have a new question please ask in English.
If you want to help this community answer these questions.


Most popular tags

power motor dc circuit transformer voltage current used system phase factor resistance load synchronous energy ac induction generator electric series frequency capacitor use speed between meter electrical line type mosfet control transmission difference magnetic plant high single instrument bjt source advantages function diode machine unit winding torque amplifier define supply thyristor motors arduino field shunt maximum relay armature problem electricity time parallel on transformers types coil diagram state flow value material three starting and direction theorem method emf operating digital microprocessor test instruments efficiency ratio loss measure operation connected low applications wave effect single-phase working losses different network wattmeter temperature measuring constant signal controlled breaker device full compare drive wire resistivity logic materials machines inductance switch flux disadvantages converter transistor gain protection scr angle force core measurement number free principle rc generators law negative bridge friction open pole conductor conservation steam iron loop resistors hysteresis short computer using lines secondary station battery rectifier inverter linear relays nuclear regulation circuits design analog work rotor electronics gate forces diesel damping rlc connection factors capacitors minimum insulation basic moving running reactance systems air fault range direct main stability quality starter igbt eddy ideal ammeter rl 3-phase plants arc induced thermal error fuzzy biasing dielectric pressure balanced superposition errors rotation characteristics feedback measured electronic start alternator off back curve over solar three-phase tariff locomotive peak bias zener capacitance commutator surge rating universal potentiometer permanent mechanical copper self transducer capacity electrons memory adc excitation inductive transfer explain fuse pure harmonics application internal pmmc average reaction welding resonance traction breakers designed electromagnetic si generation brushes density switching shaded rate impedance distribution methods star oscillator reluctance semiconductor inductor simplification algebra 8085 boolean weston dynamometer insulating strength installation permeability definition fuel heating earth units neutral rms rated engineering conductors coefficient controller usually reverse excited analysis change body components