Static and dynamic critical behaviour of the freezing transition in the random-exchange Ho_5Co_(50)Al_(45) alloy

摘要

Random-exchange metallic spin glass H_o5Co_(50)Al_(45) is investigated by static and dynamic magnetization measurements. The specimen is initially characterized as spin-glass-like below the freezing point T_f to approximately 14 K. The freezing phenomenon at T_f is examined by static and dynamic scaling analysis. The results support the existence of a paramagnetic-spin-glass phase transition at T_g approximately equals 14.2 K, with critical exponents of the transition as δ = 6.4, φ = 3.3 and zν = 11.8.