question_answer 23)

A sample of paramagnetic salt contains atomic dipoles each of dipole moment . The sample is placed under a homogeneous magnetic field of 0.64 T, and cooled to a temperature of 4.2 K. The degree of magnetic saturation achieved is equal to 15%. What is the total dipole moment of the sample for a magnetic field of 0.98 T and a temperature of 2.8 K? (Assume Curie's law).  

Answer:

Magnetic dipole moment of sample,                                                 Dipole moment at 4.2 K,                                 Using Curie?s law,                                 or