Ferroelectricity in antiferromagnetic phases of Eu1-xYxMnO3

• Type: Article in International Scientific Journal
• Date: 2011

Authors

Agostinho Moreira, JA (Author) FCUP; Almeida, A (Author) FCUP; Ferreira, WS (Author) Other; Chaves, MR (Author) Other; Oliveira, JB (Author) FCUP; Machado da Silva, JMM (Author) Other; Sa, MA (Author) Other; Vilela, SMF (Author) Other; Tavares, PB (Author) Other

Journal

Title: Solid State Communications

Vol. 151

Pages: 368-371

ISSN: 0038-1098

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 14 Citations

Scopus - 14 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-002-TT9

DOI: 10.1016/j.ssc.2010.12.018

Abstract (EN): This work reports an experimental investigation of the ferroelectric character of magnetic phases of the orthorhombic Eu1-xYxMnO3 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4