Spinodal Decomposition of Magnetic Ions in Eu-Codoped Ge/1-x/Cr/x/Te
  We present the experimental evidence for the presence of spinodal decomposition of the magnetic ions in the Ge/1-x-y/Cr/x/Eu/y/Te samples with chemical composition varying in the range of 0.015 < x < 0.057 and 0.003 < y < 0.042. The ferromagnetic transition at temperatures 50 < T < 57 K was observed, independent of the chemical composition. The long-range carrier mediated itinerant magnetic interactions seem to be responsible for the observed ferromagnetic order. The magnetic irreversibility with coercive field H/C/ = 5?63 mT and the saturation magnetization M/S/ <? 2?6 emu/g are found to strongly depend on the chemical composition of the alloy. 
A. Podg\'orni, L. Kilanski, W. Dobrowolski, M. G\'orska, A. Reszka, V.   Domukhovski, B. J. Kowalski, B. Brodowska, J. R. An...
cond-mat.mtrl-sci