Nature of the magnetoelectric coupling in multiferroic Pb(Fe1/2Nb1/2)O-3 ceramics

Lente  MH; Guerra  JDS; de Souza  GKSFraygola  BMRaigoza  CFVGarcia  DEiras  JA

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Nature of the magnetoelectric coupling in multiferroic Pb(Fe1/2Nb1/2)O-3 ceramics

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In this work, electrical permittivity measurements in lead iron niobate (PFN) ceramics were performed in the frequency and temperature ranges from 10 kHz to 1.2 GHz and from 15 to 450 K, respectively. The microwave dielectric results characterized unambiguously the magnetoelectric effect in PFN and demonstrated that the nature of such coupling arises indirectly via ferroelastic contribution rather than a direct coupling between electrical and magnetic order parameters. Moreover, it was also verified that such coupling can be enhanced or suppressed depending on the relative orientation between the probing electric field and the macroscopic ferroelectric polarization.

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《Physical review, B. Condensed matter and materials physics》 |2008年第5期|054109-1-054109-6-0|共6页
作者
Lente MH; Guerra JDS; de Souza GKSFraygola BMRaigoza CFVGarcia DEiras JA;
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Univ Fed Sao Carlos, Dept Fis, Grp Ceram Ferroeletricas, BR-13565970 Sao Carlos, SP, Brazil;

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正文语种英语
中图分类固体物理学;
关键词
LEAD IRON NIOBATE; DIELECTRIC-PROPERTIES; SECONDARY FERROICS; PHASE-TRANSITIONS; LOW-TEMPERATURE; FERROELECTRICS; PBFE0.5NB0.5O3; DIFFRACTION; ANOMALIES; DOMAINS;

Nature of the magnetoelectric coupling in multiferroic Pb(Fe1/2Nb1/2)O-3 ceramics

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