Evidence of magnetodielectric coupling in multiferroic Pb ( Fe 0.5 Nb 0.5 ) O 3 ceramics from ferroelectric measurements and electron paramagnetic resonance

Magnetodielectric coupling effects of single phase multiferroic Pb ( Fe 0.5 Nb 0.5 ) O 3 ceramics have been studied using standard ferroelectric measurements and electron paramagnetic resonance (EPR). Changes in the electrical polarization behavior were observed in the paramagnetic to weakly magneti...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Applied physics letters 2008-10, Vol.93 (17), p.172902-172902-3
Hauptverfasser: Font, Reynaldo, Alvarez, Guillermo, Raymond, Oscar, Portelles, Jorge, Siqueiros, Jesús M.
Format: Artikel
Sprache:eng
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Magnetodielectric coupling effects of single phase multiferroic Pb ( Fe 0.5 Nb 0.5 ) O 3 ceramics have been studied using standard ferroelectric measurements and electron paramagnetic resonance (EPR). Changes in the electrical polarization behavior were observed in the paramagnetic to weakly magnetized antiferromagnetic transition near 103 K associated with a rhombohedral to monoclinic symmetry reduction. The analysis of changes in the EPR spectral parameters confirms the transition from paramagnetic to weakly magnetized antiferromagnetic and reveals noticeable anomalies in the high temperature region near the ferroelectric-paraelectric transition (383 K), which are correlated with the tetragonal-to-cubic symmetry change and the characteristic diffuse phase transition of this material.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.3006433