Local structure of lead halide melts analysed by pulsed neutron diffraction

• Published in: The Journal of physics and chemistry of solids Vol. 66; no. 2; pp. 433 - 438
• Main Authors: Iwadate, Y., Seki, Y., Fukushima, K., Misawa, M., Fukunaga, T., Itoh, K., Nakazawa, T., Okamoto, Y., Matsuura, H., Kajinami, A., Ohtori, N., Umesaki, N.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Oxford Elsevier Ltd 01.02.2005; Elsevier
• Subjects: A. Inorganic compounds; C. Neutron scattering; Condensed matter: structure, mechanical and thermal properties; Exact sciences and technology; Physics; Structure of associated liquids: electrolytes, molten salts, etc; Structure of liquids; Structure of solids and liquids; crystallography; 61.12.Ld Neutron diffraction; C. Neutron scattering; A. Inorganic compounds; 61.20.Qg Molten salts; Coordination number; Inorganic compounds; Neutron diffraction; Molten salts; Experimental study; Correlation functions; Local structure; Radial distribution function; Short-range order; 61.20.Qg Molten salts A. Inorganic compounds; Liquid structure; Melts; Lead chlorides
• ISSN: 0022-3697; 1879-2553
• DOI: 10.1016/j.jpcs.2004.06.056

According to the radial distribution analysis of PbCl 2 melt through pulsed neutron diffraction (PND), the Cl-coordination numbers around Pb were found to be about 4, corresponding to the peak at r=2.84 Å in the correlation function G( r), and to be about 2 at r=3.40 Å, respectively. These two peaks were thought to form the first coordination shell. On the contrary, the Br-coordination number around Pb was estimated at about 4. Although PbCl 2 and PbBr 2 have the same crystal structure, the short-range structure of the melts was quite different from each other.