Impedance spectroscopy and conduction mechanism of a BiFe0.95Mn0.05O3 thin film - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Thin Solid Films Année : 2021

Impedance spectroscopy and conduction mechanism of a BiFe0.95Mn0.05O3 thin film

(1) , (2) , (2)
1
2

Résumé

Dielectric response and conduction mechanism were investigated for a multiferroic BiFe0.95Mn0.05O3 epitaxial thin film. A contribution from a thermally activated interface (0.37 eV) and the bulk of the film on the dielectric response were observed through the comparison between experimental results and equivalent circuit model. The low frequency interface relaxation signatures strongly suggest a Maxwell-Wagner space charge origin. The alternative current conductivity deduced from the model follows a power law frequency dependence suggesting a polaronic hopping mechanism while the low frequency limit is in perfect agreement with the direct current conduction mechanism. The current-voltage characteristics were indeed correlated with Schottky-Simmons interface limited transport with activation energy of 0.36 eV, close to the one extracted from the impedance analysis. Such analysis of the electrostatic landscape and dielectric behaviour may help to further understanding the anomalous photo-induced properties in the BiFeO3 system.

Dates et versions

hal-03627235 , version 1 (01-04-2022)

Identifiants

Citer

S. Yousfi, M. El Marssi, H. Bouyanfif. Impedance spectroscopy and conduction mechanism of a BiFe0.95Mn0.05O3 thin film. Thin Solid Films, 2021, 724, ⟨10.1016/j.tsf.2021.138616⟩. ⟨hal-03627235⟩
9 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook Twitter LinkedIn More