Fe alloying based microwave absorber.

Materials	Method	Thickness/mm	/dB	Frequency/GHz	Ref.
Fe3O4 coated Fe0.65Co0.35 flakes	Solvothermal	5.89	−41.4	2.02	118
Ni–Fe–P/PET	Electrodeposition	—	69.2–80.3*	1.5	119
FeCo/EPDM	Electroless plating process	—	30*	12.5	117
Fe–Si–Al/PP	Two roller mixer	—	−9.3	0.8	120
Ni–Fe–P/TS	Electroless plating process	—	60*	1.5	121
FeCo/ZnO	Hydrothermal	1.5	−31	5.5	122
FeNi/CFs	Two-step electrodeposition	2	42*	0.03–0.1	111
FeNi@C	Hydrothermal	2	−47.6	3.17	116
FeNi3@C@RGO	Three step reaction	2.6	−47.6	10.2	114
FeCo@SiO2@MWCNT	Two step reaction	3	−35	18	123
FeCo@SnO2@graphene@PANI	Three step reaction	3	−39.8	6.4	124
Co3Fe7@C yolk–shell	Hydrothermal, heat treatment	2	−35.3	9.1	125
FeCoNi-EG	Electroless plating process	3	−28.8	13.5	126
FeCo@SiO2@MWCNTs	Multi step processes	3	−35*	18	127
Carbon–FeCu@CNBs	Sol–gel, reduction	7.5	−21.02	12.21	128
FeCo13@C	Three steps	1.5	−6.7	11.1	129
FeCo/graphite nanoflakes	Jet milling, acid treatment	2	−30.6	7.4	130
FexNi1−x@PVDF@MWCNT	Acid treatment, melt mixing	2.5	−58*	8–12	115
CI/Fe91Si9	Blending technique	3	−45	5.2	131