Paramagnetic Substance: Attraction to Magnetic Field

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Paramagnetic substances exhibit attraction to magnetic fields when placed near the poles of a bar magnet due to their ability to become magnetized in an external magnetic field. This magnetization results from the alignment of unpaired electron spins within the substance, which creates a net magnetic dipole moment. The thermal averaging of these spins leads to a resultant force that draws the paramagnetic material toward the stronger magnetic field. The phenomenon highlights the interaction between thermal energy and magnetic properties at the atomic level. Understanding this behavior is crucial for applications in magnetic materials and technologies.
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When a para magnetic substance is brought near a north pole or a south pole of a bar magnet it
experiences attraction. How?Hint : when you put the para magnetic substance in external magnetic field it magnetize. So it experiences the resultant force towards the stronger magnetic field.
 
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Paramagnets in external magnetic fields acquire a net average magnetic dipole moment due to the thermal averaging over the unpaired spins of the atoms in the magnet coupled to the external field.
 

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