Ferromagnetism of decagonal AlCuGeMn quasicrystals

Abstract The ferromagnetic behavior of decagonal quasicrystalline and disordered crystalline Ai 40 Cu 10 Ge 25 Mn 25 was investigated to demonstrate whether or not the existence of the quasicrystalline state yields a change of the magnetic properties. We therefore studied the magnetic phase transition, the hysteresis behavior, and the law of approach to ferromagnetic saturation. A comparison of the results shows no significant deviations in the magnetic behavior of either state, except for the hysteresis behavior which is characterized by two magnetic phases for the quasicrystalline state