Electrical transport mechanism of aluminum substituted barium hexaferrite magnetic semiconductor

The polycrystalline M-type barium hexaferrite (BaFe 12− x Al x O 19 ) with x  = 0.0, 1.0, 2.0, and 3.0 have been prepared by the sol–gel Method. The crystal structure of all the samples is found to be in hexagonal symmetry with P6 3 /mmc space group. The impedance was studied over a range of frequen...

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