Can Spin Waves Explain Magnetization?

[curious_mind]

Homework Statement

There is a question on effect of magnons on magnetization M of a ferromagnet material

How magnons affect magnetization in a ferromagnet -
(A) increase magnetization
(B) decrease magnetization
(C) Stabilize the magnetization
(D) Cause critical magnetic fluctuation

Relevant Equations

Magnons in ferromagnets are spin waves.

As per my understanding, magnetization is magnetic dipole moment per unit volume and spin magnetic moment contributes to magnetization of the ferromagnetic material under consideration.

Magnons, aka Spin Waves, according to this understanding will fluctuate the total magnetization of the materialz is it correct ?

More generally speaking, I would be very thankful if someone can point out/suggest detailed topic or resource recommendation for study of magnetization during magnons.

Thank you.

 

[TonyStewart]

Some good resources to begin with include:

1. "Introduction to Magnetism and Magnetic Materials" by David Jiles
2. "Spin Waves: Theory and Applications" by Helmut Schultheiss and Burkard Hillebrands
3. "Spin Dynamics: Basics of Nuclear Magnetic Resonance" by Malcolm Levitt