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Magnetic Dipole Moment & Magnetic susceptibility
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Magnetic dipole Magnetic dipole moment A magnetic dipole consists of two unlikely poles of equal strength and separated by small a distance 2l=magnetic length Magnetic dipole moment It is a product of strength of either pole and the magnetic length (2l) of the magnet. Note : Magnetic pole strength depends on nature of material and cross section area of the material Magnetic pole strength ∝ cross sectional area. 2l Magnetic length
Magnetic dipole Motion of electrons in atoms gives rise to the phenomenon called magnetism. Basically two types of motions are associated with the electrons: • Motion of electrons in an orbit within the nucleus. • Spin of electrons around its axis The spin and orbital moments imparts magnetic moment on each electron, forcing them to behave as tiny magnets.
Add your title The rotational force experienced by a magnet when placed in a magnetic field perpendicular to its magnetic axis is defined as the MagneticMoment of a Magnet.
Magnetic Dipole moment Nature of magnetic material
Diamagnets Quantum behaviour diamagnets? bital, their spin quantum numbers have to be different. In other words, one of the electrons has to be “spin-up,” with ms=+1/2, while the other electron is “spin-down,” with ms=-1/2. Whenever two electrons are paired together in an orbital, or their total spin is 0, they are called diamagnetic electrons.
Diamagnets What happens when magnetic field is applied to diamagnets? They tend to repel magnets they do that my inducing very tiny magnetic moments in the opposite direction.As a result there is a very tiny magnetic field induced inside wood in the opposite direction as a result the total field inside the diamagnets become slightly less than the field outside. We have seen in magnetic field lines if the field lines value is less we like to draw the lines further away from each other
Paramagnets Quantum behaviour paramagnets? Electrons that are alone in an orbital are called paramagnetic electrons. Remember that if an electron is alone in an orbital, the orbital has a net spin, because the spin of the lone electron does not get canceled out. If even one orbital has a net spin, the entire atom will have a net spin. Therefore, an atom is considered to be paramagnetic when it contains at least one paramagnetic electron. In other words, an atom could have 10 paired (diamagnetic) electrons, but as long as it also has one unpaired (paramagnetic) electron, it is still considered a paramagnetic atom.
Paramagnets What happens when magnetic field is applied to paramagent? Paramagnets have tiny permanent magnets inside of them but they are all in random directions but when you put them in a magnetic field they get aligned in the same direction as a result of that there is a tiny magnetic field produced inside the para magnets in the same direction as the applied magnetic field. Which means that total inside becomes slightly higher then the field outside which means the magnetic field lines inside the paramagnet are slightly closer to each other as compared to the magnetic field line outside the material
Ferromagnets What happens when magnetic field is applied toFerromagnets ? We have seen that ferromagnets have magnetic domains inside of them and when we apply an external magnetic field on them all the domains align themselves in the same direction as a result very strong magnetic field is produced in the same direction as the applied magnetic field. As a result the magnetic field lines are very strong inside the ferromagnet as compared to outside of the side of the ferromagnetic material. So we represent the field lines as they are very closely attached to each other.
Magnetic Susceptibility Paramagnets (Aluminum) The induced field inside these material depends upon two things one external magnetic field and the property of the material called magnetic susceptibility it is represented by χm B(induced)=B(External magnetic field)χm(susceptibility) χm==B(in)/B(out)
