Persisting correlation between electrical transport and magnetic dynamics in M-type hexaferrites
- Resource Type
- Working Paper
- Authors
- Rapljenović, Željko; Novosel, Nikolina; Dominko, Damir; Kisiček, Virna; Góngora, David Rivas; Drobac, Đuro; Prester, Mladen; Vinnik, Denis; Alyabyeva, Liudmila N.; Gorshunov, Boris P.; Ivek, Tomislav
- Source
- Subject
- Condensed Matter - Strongly Correlated Electrons
- Language
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.