Article,
Study of the piezoelectricity in iron-doped collagen films
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 13 (3): 157-165 (2002)
DOI: 10.1023/A:1014333417212
Abstract
In this paper a study was carried out of collagen membranes prepared
with iron as an impurity. In this study the function of the iron in the
collagen structure was examined with the aim of increasing the value of
the piezoelectric strain tensor element d(14). We prepared different
samples with different iron doping levels. Doped samples by immersion in
solutions of FeCl2 (0.1 M and 0.2 M), FeCl3 (0.1 M) and FeNH4SO4 (0.1 M)
and iron doped directly in solution with Fe2O3 at 5% and 15% were
examined. Mossbauer spectroscopy, the piezoelectric strain tensor
element d(14) the elastic constant s(55), and the dielectric function
epsilon(11) of the samples were examined. The loss factor Q(-1) of the
samples was also measured using the admittance resonance method. The
role played by the iron in the different situations and the consequences
for the transport properties are discussed. (C) 2002 Kluwer Academic
Publishers.
