Structural and magnetic transformations in the GdMn2Hx hydrides

Powder samples of GdMn2Hx hydrides, with 0≤x≤4.3, have been characterized by X-ray analysis and SQUID magnetometry for temperatures ranging between 4 and 375 K. The observed phase transformations as a function of temperature and hydrogen concentration are discussed and explained. The correlated changes of magnetization and susceptibility have been analyzed and the temperature dependent development of magnetic ordering of Mn and Gd atoms as a function of temperature and hydrogen content has been discussed. The structural and magnetic phase diagrams have been proposed