High pressure gas-solid interstitial modification of Nd(Fe,M)/sub 12/ (M=Ti,V,Mo) with H and N atoms

Since the discovery of the improvement of magnetic properties in interstitially modified rare earth (R)transition metal (T) compounds [I], many studies have been performed to investigate the nitrogenation behavior of R-T compounds with ThMn12-type structure [2, 31. However, the mechanisms involved are not yet completely understood and different nitrogen absorption behaviors and stability ranges have been observed for different substitutions [4].