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  • A proton has spin and magnetic moment just like an electron. Why then its effect is neglected in magnetism of materials.

A proton has spin and magnetic moment just like an electron. Why then its effect is neglected in magnetism of materials.

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Magnetic moment of electron and proton are:
M_e=\frac{eh}{4\pi m_e}     &.    M_p=\frac{eh}{4\pi m_p}
As m_p >> m_e, the Magnetic moment of proton is negligible compared to electron. 

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