Yl. Raikher et Vi. Stepanov, MAGNETIC RESONANCES IN FERROFLUIDS - TEMPERATURE EFFECTS, Journal of magnetism and magnetic materials, 149(1-2), 1995, pp. 34-37
The joint influence of superparamagnetic and powder-pattern effects on
the formation of FMR absorption lines in ferrofluids is discussed. Co
nsistent consideration of these mechanisms yields specific contours of
the absorption lines and affects substantially the temperature depend
ence of the linewidth.