Greatly enhanced permeability for planar anisotropy Ce2Fe17N3−δ compound with rotational orientation in various external magnetic fields

A new planar anisotropy Ce2Fe17N3−δ compound as an electromagnetic absorption material was prepared by the arc melting method. The influence of rotational orientation in various magnetic fields on the complex permeability and orientation degrees of the compound/paraffin composites was systematically studied. It is found that the orientation plays an important role in complex permeability and orientation degrees. For the composite with rotational orientation in 1.6 T, the real permeability reaches a large value of 4.8 at 2 GHz and the imaginary part reaches 2.6 at 5.5 GHz; on the other hand, the orientation degree reaches 62.4%. It is evident that the oriented Ce2Fe17N3−δ composite with planar anisotropy may have potential applications as microwave absorption materials.

► A new ternary rare earth iron nitride Ce2Fe17N3−δ compound with planar anisotropy was prepared. ► Compound/paraffin composites are used as electromagnetic absorption materials. ► Composite was oriented in various magnetic fields. ► Orientational degrees of the composite were characterized by XRD method. ► Influence of orientation on the complex permeability of the composite was investigated.