Ferromagnetic resonance studies on Ho<inf>0.85</inf>Tb <inf>0.15</inf>Fe<inf>2</inf>H<inf>x</inf> and Dy<inf>0.73</inf>Tb <inf>0.27</inf>Fe<inf>2</inf>H<inf>x</inf> systems

The ferromagnetic resonance studies were carried out at room temperature on fine powders of Ho0.85Tb0.15Fe2Hx (x=0-3.1) and Dy0.73Tb0.27Fe2Hx (x=0-3.3) at X and Q bands. The g values were found to decrease with increasing hydrogen concentration in both the systems. This data along with the earlier magnetization and Mössbauer data have been used to explain the observance of Tcomp in the hydrogenated samples of Ho0.85Tb 0.15Fe2.