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arXiv · 2104.06964

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

Željko Rapljenović·Nikolina Novosel·Damir Dominko·Virna Kisiček·David Rivas Góngora·Đuro Drobac·Mladen Prester·Denis Vinnik·Liudmila N. Alyabyeva·Boris P. Gorshunov·Tomislav Ivek
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Abstract

In this work we present frequency-dependent magnetic susceptibility and dc electric transport properties of three different compositions of hexaferrite Ba$_{1-x}$Pb$_{x}$Fe$_{12-y}$Al$_{y}$O$_{19}$. We find a correlation between activation energies of dc electric transport and ac magnetic susceptibility which persists in the whole researched range of aluminium substitution $x=0$ to $3.3$. This result is discussed in the context of charged magnetic domain walls, the pinning of which is determined by charge carriers activated over the transport gap. Our work points toward a general relaxational mechanism in ferrimagnetic semiconductors which directly affects dynamic magnetic properties via electric transport.

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Željko Rapljenović, Nikolina Novosel, Damir Dominko, Virna Kisiček, David Rivas Góngora, Đuro Drobac, Mladen Prester, Denis Vinnik, Liudmila N. Alyabyeva, Boris P. Gorshunov, Tomislav Ivek. 2021-05-03. Persisting correlation between electrical transport and magnetic dynamics in M-type hexaferrites. https://arxiv.org/abs/2104.06964

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