Which of the following statements is true about single domain particles? Choose

Question

Which of the following statements is true about single domain particles? Choose all that apply.

A.In the presence of external magnetic field, the dipole moments are aligned in a direction opposite the magnetic field.

B.In the absence of external magnetic field, the dipole moments in the particles are aligned.

C.The phenomenon of hysteresis plays in a role in the heating mechanism of the particles in the presence of an alternating magnetic field.

D.Single domain particles exhibit zero remanence, meaning that after removal of the magnetic field, the internal moment in the particles reduces to zero.

Explanation / Answer

Ans: D

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