Influence of spin-glass-like phase on magnetic and electrical transport properties of reactive sputtered Al1−xFexN films

► Nano-scale Al1−xFexN grains form in the reactive sputtered films. ► A large amount of spin-glass-like moments exist in the films. ► The coercivity increases below 50 K due to the frozen spin-glass-like moments. ► The low-temperature transport mechanism turns from tunneling to hopping as x increases. ► MR follows the relation of logMR=a+bT−1, and the spin polarization satisfies the relation of P(T)=P0e−βTα.