Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Impedance spectroscopy and conduction mechanism of a
  BiFe$_{0.95}$Mn$_{0.05}$O$_3$ thin film   Dielectric response and conduction mechanism were investigated for a
multiferroic BiFe$_{0.95}$Mn$_{0.05}$O$_3$ 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 BiFeO$_3$ system.

7
The categories of this paper are: hep-th
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
30
The categories of this paper are: q-alg
29
The categories of this paper are: funct-an
17
The categories of this paper are: q-fin
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
19
The categories of this paper are: eess
15
The categories of this paper are: nucl-ex
21
The categories of this paper are: adap-org