Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Temperature Dependence of Piezoelectric and Electrostrictive Properties
  in a PBN:65 Morphotropic Phase Boundary Thin Film   We used an optical reflection method to measure the temperature-dependence of
the piezoelectricity, electrostriction and time constant of a morphotropic
phase boundary (MPB) thin film. We obtained the piezoelectric constant and the
electrostrictive constant as a function of temperature by curve fitting the
experimental data. We also obtained the time constant as a function of
temperature and applied voltage. An abnormal behavior of the strain that was
larger at 275 K than at 285 K was observed. This observation was also
consistent with the minimal hysteresis behavior of the time constant at 275 K.
We provided a possible explanation for this observation.

30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
9
The categories of this paper are: nlin
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
14
The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
3
The categories of this paper are: physics
34
The categories of this paper are: chem-ph