Polar Structure Formation in Solid Solution of Strontium-Substituted Fluorapatite-Gelatin Composites: From Structural and Morphogenetic Aspects to Pyroelectric Properties
Knaus J, Sommer M, Duchstein P, Gumeniuk R, Akselrud L, Sturm S, Auffermann G, Hennig C, Zahn D, Hulliger J, Sturm EV (2020)
Publication Type: Journal article
Publication year: 2020
Journal
Book Volume: 32
Pages Range: 8619-8632
Journal Issue: 19
DOI: 10.1021/acs.chemmater.0c02993
Abstract
Strontium-substituted apatite-(CaF)-gelatin composites have been synthesized within a gelatin gel using the double-diffusion technique. All experimental parameters were kept constant while systematically varying the strontium/calcium molar ratio in solution. The effect of the presence of strontium ions in the growth solution on composition, morphogenesis, and morphology as well as pyroelectric properties of synthetic aggregates was systemically analyzed. It was shown that strontium ions significantly inhibit the growth process of composite aggregates and increase growth anisotropy along [0001], which were also confirmed and explained using molecular dynamic simulations. Furthermore, the promotion of the crystal branching processes and spherulite formation were observed. Pyroelectric microscopy (SPEM) measurements on mixed substituted apatite-(CaSrF)-gelatin composite aggregates showed an increase in polar properties, suggesting a lowering of the crystal symmetry. This was verified by Rietveld refinement of synchrotron powder X-ray diffraction, which revealed the noncentrosymmetric P63 apatite crystal structure. These data could shed new light on understanding piezoelectric and pyroelectric properties of apatite-based biological hard tissues.
Authors with CRIS profile
Involved external institutions
Universität Konstanz
Germany (DE)
Universität Bern
Switzerland (CH)
Technische Universität Bergakademie Freiberg
Germany (DE)
Ivan Franko National University of Lviv / Львівський національний університет імені Івана Франка
Ukraine (UA)
Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden e.V. (IFW) / Leibniz Institute for Solid State and Materials Research Dresden
Germany (DE)
Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids
Germany (DE)
European Synchrotron Radiation Facility (ESRF)
France (FR)
Germany (DE)
Universität Bern
Switzerland (CH)
Technische Universität Bergakademie Freiberg
Germany (DE)
Ivan Franko National University of Lviv / Львівський національний університет імені Івана Франка
Ukraine (UA)
Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden e.V. (IFW) / Leibniz Institute for Solid State and Materials Research Dresden
Germany (DE)
Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids
Germany (DE)
European Synchrotron Radiation Facility (ESRF)
France (FR)
How to cite
APA:
Knaus, J., Sommer, M., Duchstein, P., Gumeniuk, R., Akselrud, L., Sturm, S.,... Sturm, E.V. (2020). Polar Structure Formation in Solid Solution of Strontium-Substituted Fluorapatite-Gelatin Composites: From Structural and Morphogenetic Aspects to Pyroelectric Properties. Chemistry of Materials, 32(19), 8619-8632. https://dx.doi.org/10.1021/acs.chemmater.0c02993
MLA:
Knaus, Jennifer, et al. "Polar Structure Formation in Solid Solution of Strontium-Substituted Fluorapatite-Gelatin Composites: From Structural and Morphogenetic Aspects to Pyroelectric Properties." Chemistry of Materials 32.19 (2020): 8619-8632.
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