On the nature of the (de)coupling of the magnetostructural transition in Er5Si4

• Tipo: Artigo em Revista Científica Internacional
• Data: 2017

Autores

Costa, RM (Autor) Outra; Belo, JH (Autor) Outra; Barbosa, MB (Autor) Outra; Algarabel, PA (Autor) Outra; Magen, C (Autor) Outra; Morellon, L (Autor) Outra; Ibarra, MR (Autor) Outra; Goncalves, JN (Autor) Outra; Fortunato, NM (Autor) Outra; Amaral, JS (Autor) Outra; araujo, j. p. (Autor) FCUP; pereira, a. m. (Autor) FCUP

Revista

Título: Physica Status Solidi (B): Basic Research

Vol. 254

Página Final: 1700143

ISSN: 0370-1972

Editora: Wiley-Blackwell

Indexação

ISI Web of Knowledge - 1 Citação

Scopus - 1 Citação

Outras Informações

ID Authenticus: P-00N-4MS

DOI: 10.1002/pssb.201700143

Abstract (EN): In this report, a successful thermodynamical model was employed to understand the structural transition in Er5Si4, able to explain the decoupling of the magnetic and structural transition. This was achieved by DFT calculations, which were used to determine the energy differences at 0K, using a LSDA+U approximation. It was found that the M structure is the stable phase at low temperatures, as verified experimentally with a value of Delta F-0=-0.262eV. Finally, a variation of Seebeck coefficient (similar to 6 mu V) was determined at the structural transition, which allows to conclude that the electronic entropy variation is negligible in the transition. (C) 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6