Convenience method to initialize Magmom from a given global
        magnetic moment, i.e. magnetic moment with saxis=(0,0,1), and
        provided saxis.
        
        Method is useful if you do not know the components of your
        magnetic moment in frame of your desired saxis.
        
        :param global_moment: 
        :param saxis: desired saxis
        :return:

def from_global_moment_and_saxis(cls, global_moment, saxis):
        """
        Convenience method to initialize Magmom from a given global
        magnetic moment, i.e. magnetic moment with saxis=(0,0,1), and
        provided saxis.
        
        Method is useful if you do not know the components of your
        magnetic moment in frame of your desired saxis.
        
        :param global_moment: 
        :param saxis: desired saxis
        :return: 
        """
        magmom = Magmom(global_moment)
        return cls(magmom.get_moment(saxis=saxis), saxis=saxis)