Single crystal growth and characterization of MnAs

A simple method to grow MnAs single crystals is described, using careful temperature control. Crystal characterization was determined by powder X-ray diffraction, back-reflection Laue diffraction and vibrating sample magnetometry. The results show good magnetic properties with first-order transition sharper than in polycrystalline samples and with the transition occurring at slightly lower temperatures (TC=315.5 K) than in the case of polycrystalline samples. The second-order transition in single crystal decreases with applied field at 391 K.

► First synthesis of large single crystals of MnAs is reported. ► A simple method to grow crystals is described. ► Powder X-ray diffraction, back-reflection Laue diffraction, and vibrating sample magnetometry characterization. ► Good magnetic properties with sharp first-order transition.