Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/13984
Título: | On the magnetically driven ferroelectric phase in GdMnO3 |
Autor(es): | Ribeiro, J. L. |
Palavras-chave: | Symmetry Magnetoelectric properties Magnetoelectric materials rare-earth manganites modulated phases |
Data: | 2008 |
Editora: | Taylor and Francis |
Revista: | Ferroelectrics |
Resumo(s): | At room temperature, GdMnO3 is a paraelectric and paramagnetic with a distorted perovskite structure of orthorhombic symmetry (space group Pnma). On cooling, it undergoes a phase transition sequence to a magnetic incommensurate phase ( k = δ(T ) a∗; Tc1 = 42 K) and a A-type antiferromagnetic phase (Tc2 = 27 K). At low temperatures (T ≤ 12K), a magnetic field applied along the a-axis destabilizes the antiferromagnetic phase and induces a first order transition to a magnetic commensurate modulated phase ( k = 14 a∗) that is also ferroelectric ( P// c ). This work analyses this field induced phase transition from the point of view of the symmetry and Landau theory. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/13984 |
DOI: | 10.1080/00150190802368073 |
ISSN: | 0015-0193 |
Versão da editora: | http://dx.doi.org/10.1080/00150190802368073 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | CDF - FCD - Artigos/Papers (with refereeing) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Ferroelectrics_368_114(2008).pdf Acesso restrito! | 1 MB | Adobe PDF | Ver/Abrir |