Ferroelectricity in antiferromagnetic phases of Eu1−xY xMnO3

Autor:	J. Agostinho Moreira, J.B. Oliveira, M.A. Sá, J.M. Machado da Silva, Sérgio M. F. Vilela, Pedro B. Tavares, M. R. Chaves, W. S. Ferreira, A. Almeida
Rok vydání:	2011
Předmět:	Materials science Early results Condensed matter physics Materials Chemistry Antiferromagnetism Orthorhombic crystal system General Chemistry Condensed Matter Physics Polarization (waves) Ferroelectricity Phase diagram
Zdroj:	Solid State Communications. 151:368-371
ISSN:	0038-1098
DOI:	10.1016/j.ssc.2010.12.018
Popis:	This work reports an experimental investigation of the ferroelectric character of magnetic phases of the orthorhombic Eu1−xY xMnO3 system at low temperatures. The temperature dependence of the polarization curves clearly reveals the existence of a re-entrant improper ferroelectric phase for x = 0.2 , 0.3 and 0.5. A ferroelectric phase is also stable for x = 0.4 , and we have no experimental evidence for its vanishing down to 7 K. From these and early results obtained using other experimental techniques, the corresponding ( x , T ) phase diagram was traced, yielding significant differences with regard to the ones previously reported.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0b28580e8d7cbe40ccfd120865a62b13 https://doi.org/10.1016/j.ssc.2010.12.018 Zobrazit plný text záznamu Full Text from ScienceDirect