Returns a Structure with only magnetic atoms present.
        :return: Structure

def get_structure_with_only_magnetic_atoms(self, make_primitive=True):
        """
        Returns a Structure with only magnetic atoms present.
        :return: Structure
        """

        sites = [site for site in self.structure if abs(site.properties["magmom"]) > 0]

        structure = Structure.from_sites(sites)

        if make_primitive:
            structure = structure.get_primitive_structure(use_site_props=True)

        return structure