On the T-s anomaly in betaine calcium chloride dihydrate (BCCD)

• Tipo: Artigo em Revista Científica Internacional
• Data: 2002

Autores

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

Revista

Título: Ferroelectrics

Vol. 270

Páginas: 1531-1536

ISSN: 0015-0193

Editora: Taylor & Francis

Indexação

ISI Web of Knowledge - 1 Citação

Scopus - 0 Citações

Outras Informações

ID Authenticus: P-000-R5J

DOI: 10.1080/00150190211208

Abstract (EN): In this work we study the structure of the fourfold phase in a 2% brominated BCCD sample, above and below the so-called "strange anomaly" at T-s approximate to 93 K, in order to confirm the structural modification predicted by Neubert et al . on the basis of the Double Ising Spin model. The "internal transition" predicted by this model would correspond to a first order, symmetry conserving phase transition, that preserves the wavenumber of the commensurate phase and is characterized by a discontinuous increase of the symmetrized components of the structural modulation. The experimental results reported herein do not corroborate the quantitative predictions of the model.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6