Temperature dependence and magnetic field dependence of magnetization. a Temperature dependence of the remnant magnetization Mr for samples A-D. Mr remains over zero even when the temperature reaches 340 and 350 K for samples B and D, respectively. b The magnetic field dependence of magnetization for MnAs grown on GaAs (110) and GaAs (001) at 300 K, under a magnetic field applied along the easy axis of magnetization.
Xu et al. Nanoscale Research Letters 2011 6:125 doi:10.1186/1556-276X-6-125