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The effect of zinc and titanium on the structure of calcium-sodium phosphate based glass

Moss, R.M., Abou Neel, E.A., Pickup, D.M., Twyman, H.L., Martin, R.A., Henson, M.D., Barney, E.R., Hannon, A.C., Knowles, J.C., Newport, Robert J. and others. (2010) The effect of zinc and titanium on the structure of calcium-sodium phosphate based glass. Journal of Non-Crystalline Solids, 356 (25-27). pp. 1319-1324. ISSN 0022-3093. (doi:10.1016/j.jnoncrysol.2010.03.006) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.1016/j.jnoncrysol.2010.03.006

Abstract

An array of different structural probes has been used to define the effect of adding Zn and Ti to a sodium- calcium phosphate glass. X-ray absorption spectroscopy at the Zn K-edge suggests that the Zn atoms occupy mixed (4- and 6-fold) sites within the glass matrix. X-ray diffraction reveals a feature at 2.03 � that develops with the addition of Zn and Ti and is consistent with Zn-O and Ti-O near-neighbour distances. Neutron diffraction is used to resolve two distinct P-O distances and highlights the decrease in P·· ·P coordination number from 2.0 to 1.7 as the Ti metal concentration rises, which is attributed to the O/P fraction moving away from the metaphosphate value of 3.0 to 3.1 with the addition of Ti. Other correlations, such as those associated with CaOx and NaOx polyhedra, remain largely unaffected. These results suggest that the network forming P·· ·P correlation is most disrupted, with the disorder parameter rising from 0.07 to 0.10 � with the additional modifiers. Zn appears to be introduced into the network as a direct replacement for Ca and causes no structural variation over the composition range studied.

Item Type: Article
DOI/Identification number: 10.1016/j.jnoncrysol.2010.03.006
Additional information: Unmapped bibliographic data: LA - English [Field not mapped to EPrints] J2 - J Non Cryst Solids [Field not mapped to EPrints] AD - School of Physical Sciences, University of Kent, United Kingdom [Field not mapped to EPrints] AD - Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, London, WC1X 8LD, United Kingdom [Field not mapped to EPrints] AD - ISIS Facility, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Didcot, OX11 0QX, United Kingdom [Field not mapped to EPrints] AD - WCU Research Centre of Nanobiomedical Science, Dankook University, San#29, Anseo-dong, Dongnam-gu, Cheonan-si, Chungnam, 330-714, South Korea [Field not mapped to EPrints] DB - Scopus [Field not mapped to EPrints]
Uncontrolled keywords: Glass structure G188, Neutron diffraction N130, X-ray absorption X120, X-ray diffraction X130, Calcium phosphate glass, Composition ranges, Coordination number, Disorder parameters, Effect of zincs, Glass matrices, Glass structure, Metal concentrations, Sodium phosphate, Structural probes, Structural variations, Zn atoms, Absorption, Atomic spectroscopy, Calcium, Calcium phosphate, Glass, Neutron diffraction, Neutrons, Phosphates, Sodium, Sodium compounds, Titanium, X ray absorption, X ray diffraction, X rays, Zinc, Absorption spectroscopy
Subjects: Q Science > QC Physics > QC173.45 Condensed Matter
Q Science > QD Chemistry > QD478 Solid State Chemistry
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Giles Tarver
Date Deposited: 11 Feb 2015 13:45 UTC
Last Modified: 18 Jun 2019 08:31 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/46966 (The current URI for this page, for reference purposes)
Newport, Robert J.: https://orcid.org/0000-0002-2365-992X
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