Persisting correlation between electrical transport and magnetic\n dynamics in M-type hexaferrites

2021/04/14 by Željko Rapljenović, Rapljenović, Željko, Nikolina Novosel +19
Energy · Materials Science · #FOS: Physical sciences #Iron oxide chemistry and applications #Magnetic Properties and Applications #Magnetic Properties and Synthesis of Ferrites #Strongly Correlated Electrons (cond-mat.str-el)

paper · pdf · doi:10.48550/arxiv.2104.06964

openalex publication_date 2021/04/14 · openalex created_date 2022/07/25 · openalex updated_date 2026/07/28

Abstract

In this work we present frequency-dependent magnetic susceptibility and dc\nelectric transport properties of three different compositions of hexaferrite\nBa_1-xPb_xFe_12-yAl_yO₁₉. We find a correlation between\nactivation energies of dc electric transport and ac magnetic susceptibility\nwhich persists in the whole researched range of aluminium substitution x=0 to\n3.3. This result is discussed in the context of charged magnetic domain\nwalls, the pinning of which is determined by charge carriers activated over the\ntransport gap. Our work points toward a general relaxational mechanism in\nferrimagnetic semiconductors which directly affects dynamic magnetic properties\nvia electric transport.\n

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