Studies of Phase Transitions and Magnetoelectric Coupling in PFN-CZFO Multiferroic Composites

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• 作者：Dhiren K. Pradhan ; Venkata S. Puli ; Shalini Kumari ; Satyaprakash Sahoo ; Proloy T. Das ; Kallol Pradhan ; Dillip K. Pradhan ; J. F. Scott ; Ram S. Katiyar
• 刊名：Journal of Physical Chemistry C
• 出版年：2016
• 出版时间：January 28, 2016
• 年：2016
• 卷：120
• 期：3
• 页码：1936-1944
• 全文大小：658K
• ISSN：1932-7455

文摘

We report studies of the ferroelectric and magnetic phase transitions of (1 – x)Pb(Fe_0.5Nb_0.5)O₃ – xCo_0.65Zn_0.35Fe₂O₄ (x = 0.2) composite with emphasis upon the nature of magnetoelectric coupling at room temperature. The presence of all cationic elements with their required stoichiometry have been confirmed by SEM and XPS studies. The composite shows well-saturated ferroelectric and ferromagnetic (multiferroic) behavior at room temperature. A ferroelectric-paraelectric phase transition has been confirmed from the temperature dependent dielectric spectra along with DSC and Raman spectroscopic studies. Antiferromagnetic, ferromagnetic, and relaxor paramagnetic states have been observed in this composite. This composite shows strong bulk biquadratic magnetoelectric coupling at room temperature, which can be useful for potential multifunctional device applications.