Extended X-Ray-Absorbtion Fine-Structure Studies of Local Ordering in Highly Concentrated Aqueous Solutions of Cu<span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">Br</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></math></span>

A. Fontaine; P. Lagarde; D. Raoux; M. P. Fontana; G. Maisano; P. Migliardo; F. Wanderlingh

doi:10.1103/PhysRevLett.41.504

Extended X-Ray-Absorbtion Fine-Structure Studies of Local Ordering in Highly Concentrated Aqueous Solutions of Cu ${Br}_{2}$

A. Fontaine, P. Lagarde, D. Raoux, M. P. Fontana, G. Maisano, P. Migliardo, and F. Wanderlingh

Phys. Rev. Lett. 41, 504 – Published 14 August 1978

Abstract

EXAFS (extended x-ray-absorption fine structure) spectra of Cu ${Br}_{2}$ aqueous solutions at various concentrations have been analyzed both for Br and Cu $K$ edges. They show a local ordering of the Cu and Br ions in planar structure which spreads as the concentration is increased up to saturation. Our data give a direct confirmation of the local-ordering model proposed recently on the basis of Raman and viscosity measurements.

Received 24 October 1977

DOI:https://doi.org/10.1103/PhysRevLett.41.504

Authors & Affiliations

A. Fontaine, P. Lagarde, and D. Raoux

Laboratoire de Physique des Solides associé au Centre National de la Recherche Scientifique, et Laboratoire pour l'Utilisation du Rayonnement Electromagnétique, Laboratoire du Centre National de la Recherche Scientifique, associé à l'Université de Paris-Sud, Faculté des Sciences d'Orsay, Université de Paris, 91405 Orsay, France

M. P. Fontana^*, G. Maisano, P. Migliardo, and F. Wanderlingh