Structure and physical properties of Eu0.8Y0.2MnO3 ceramics

• Type: Article in International Scientific Journal
• Date: 2010

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) FCUP; Sa, MA (Author) Other; Vilela, SMF (Author) Other; Tavares, PB (Author) Other

Journal

Title: Journal of Electroceramics

Vol. 25 No. 2-4

Pages: 203-211

ISSN: 1385-3449

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 14 Citations

ISI Web of Science

Scopus - 18 Citations

Scientific classification

FOS: Engineering and technology > Materials engineering

Other information

Authenticus ID: P-003-2G4

DOI: 10.1007/s10832-010-9616-5

Abstract (EN): This work is addressed to study the crystal structure and morphology, as well as the thermodynamic, dielectric and magnetic properties of Eu0.8Y0.2MnO3 ceramics, synthesized by urea sol-gel combustion method. The experimental results were systematically compared with data available for the corresponding single crystals. Though the effect of the anisotropy on both dielectric and magnetic properties is missing, they enabled us to investigate the main physical mechanisms associated with their magnetoelectric properties, in particular the one which drives the ferroelectric phase. The phase sequence and critical temperatures are in good agreement with the corresponding values reported for single crystals. Similarly, structural results evidence strong distortions of the crystal lattice, enhancing the ferromagnetic interactions over the antiferomagnetic ones. A significant contribution of the magnetic fluctuations above T-N was also evidenced from the magnetization studies.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9