(In, Mn)As nanowires with ultrahigh Mn concentration: Growth, morphology and magnetic anisotropy

► We demonstrate the growth of (In, Mn)As nanowires on GaAs(001) by MBE. ► Critical growth condition is with high Mn concentration and high growth temperature. ► The nanowires align along [−110]GaAs and show uniaxial magnetic anisotropy.