Transverse susceptibilities of ferromagnetic spin wave interacting with phonon reservoir, II: Temperature dependence of line shapes

► It is shown that as the temperature increases, the half-widths of the line shapes increase and the peak heights decrease in the resonance region. ► It is shown that as the wave number increases, the half-widths of the line shapes decrease and the peak heights increase in the resonance region. ► It is shown that as the uniaxial anisotropy energy of the z direction increases, the half-widths of the line shapes decrease and the peak heights increase in the resonance region. ► It is shown that as the exchange interaction between the z components of spins increases, the half-widths of the line shapes decrease and the peak heights increase in the resonance region. ► It is shown that as the characteristic frequency of the phonon increases, the line shapes show 'motional broadening' at low temperatures and show 'motional narrowing' at high temperatures.