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Ferroelectrics Volume 368, 2008 - Issue 1
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SECTION F: MULTIFERROICS

Dielectric and Magnetic Properties of ReMnO3 (Re = Eu, Gd) Ceramics

W. S. Ferreira IFIMUP. Departamento de Física. Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, 687, 4169-007, Porto, Portugal
,
J. Agostinho Moreira IFIMUP. Departamento de Física. Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, 687, 4169-007, Porto, Portugal
,
A. Almeida IFIMUP. Departamento de Física. Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, 687, 4169-007, Porto, Portugal
,
J. P. Araújo IFIMUP. Departamento de Física. Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, 687, 4169-007, Porto, Portugal
,
P. B. Tavares CQ-VR, Departamento de Química, Universidade de Trás-os-Montes e Alto Douro, Apartado 1013, 5001-801, Vila Real, Portugal
,
T. M. Mendonça CQ-VR, Departamento de Química, Universidade de Trás-os-Montes e Alto Douro, Apartado 1013, 5001-801, Vila Real, Portugal
,
P. Simeão Carvalho IFIMUP. Departamento de Física. Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, 687, 4169-007, Porto, Portugal
&
S. Mendonça INESC. Departamento de Física. Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, 687, 4169-007, Porto, Portugal
 show all
Pages 107-113 | Received 02 Sep 2007, Accepted 04 Mar 2008, Published online: 20 Sep 2010
 
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Abstract

EuMnO 3 and GdMnO 3 ceramics have been synthesised by urea sol-gel combustion method. The dielectric and magnetic properties of high quality ceramics of both compounds were performed in the 5 K–300 K temperature range. The magnetic phase transitions in both compounds are marked by anomalies in the temperature behaviour of both dielectric constant and induced magnetization. The experimental results are discussed and compared with those ones obtained in single crystals.

Acknowledgments

Welberth Santos Ferreira thanks Programme Alban, the European Union Programme of High Level Scholarships for Latin America, for the grant no. E06D100894BR.

This work was financially supported by Fundação para a Ciência e Tecnologia (Project PTCM/67575/2006).

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