Anisotropic effects of bromine substitution in betaine calcium chloride dihydrate

• Tipo: Artigo em Revista Científica Internacional
• Data: 2004

Autores

Vieira, LG (Autor) Outra; Ribeiro, JL (Autor) Outra; Chaves, MR (Autor) Outra; Almeida, A (Autor) FCUP; Hernandez, O (Autor) Outra; Quilichini, M (Autor) Outra; Klopperpieper, A (Autor) Outra

Revista

Título: Ferroelectrics

Vol. 302

Páginas: 397-399

ISSN: 0015-0193

Editora: Taylor & Francis

Indexação

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Outras Informações

ID Authenticus: P-000-CQQ

DOI: 10.1080/00150190490453360

Abstract (EN): The effects of partial substitution of chlorine by bromine in incommensurate betaine calcium chloride di-hydrate (BCCD) have been investigated by FTIR reflectivity and elastic neutron scattering. Bromine distorts the H-bonds linking the Ca complexes and induces local symmetry breaking. The temperature dependence of b and c lattice parameters of the 4% and 8% brominated compounds reveals that this distortion has effects that are markedly anisotropic. This anisotropy may help to clarify why bromine progressively destabilizes the low temperature phases of BCCD.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 3