This article is cited in 9 papers

Ferroelectricity

Dielectric relaxation and magnetic characteristics of the Bi$_{0.5}$La$_{0.5}$MnO$_3$ ceramics

A. V. Pavlenko^ab, A. V. Turik^a, L. A. Reznichenko^a, Yu. S. Koshkid’ko<sup>cd

a</sup> Research Institute of Physics, Southern Federal University, Rostov-on-Don
^b Southern Research Center of the Russian Academy of Sciences, Rostov-on-Don
^c VŠB – Technical University of Ostrava
^d International Laboratory of High Magnetic Fields and Low Temperatures, Wroclaw, 53-421, Poland

Abstract: The complex permittivity $\varepsilon^*$ of ceramics of bismuth-lanthanum manganite Bi$_{0.5}$La$_{0.5}$MnO$_3$ has been measured in ranges of temperatures $T$ = 10–200 K and frequencies $f$ = 10$^2$–10$^6$ Hz. Clearly pronounced regions of the non-Debye dielectric relaxation have been revealed at low temperatures ($T <$ 90 K). To describe them, the possible mechanisms have been proposed and discussed. The temperature dependences of magnetization, the anomalous behavior of which can be associated with the phase transition from the paramagnetic phase into the ferromagnetic phase occurring at $T\sim$ 40–80 K, have been measured in the temperature range $T$ = 10–120K.

Received: 28.11.2013

 English version: Physics of the Solid State, 2014, 56:6, 1137–1143

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