Magnetic and Microwave Absorbing Properties of Electrospun Ba(1−x)LaxFe12O19 Nanofibers

► La-doped BaFe12O19 nanofibers were synthesized by electrospinning technique. ► Compared to bulk, all samples exhibited a higher saturation magnetization and coercive force. ► The substitution of La3+ ions can tune the magnetic properties and electromagnetic parameters. ► The bandwidth (below −10 dB) of Ba0.95La0.05Fe12O19 nanofibers composite is obviously broadened. ► The maximum reflection loss of Ba0.95La0.05Fe12O19 nanofibers composite is −23.02 dB.