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Issue 38, 2019
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Enhanced electromagnon excitations in Nd-doped BiFeO3 nanoparticles near morphotropic phase boundaries

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Abstract

In multiferroics, electromagnons have been recognized as a noticeable topic due to their indispensable role in magnetoelectric, magnetodielectric, and magnetocapacitance effects. Here, the electromagnons of Bi1−xNdxFeO3 (x = 0–0.2) nanoparticles are studied via terahertz time-domain spectroscopy, and the impacts of doping concentrations on electromagnons have been discussed. We found that the electromagnons in Bi1−xNdxFeO3 nanoparticles are associated with their phase transition. The total coupling weight of electromagnons is gradually increased in polar R3c structures and then reduces in the antipolar Pbam phase, and the weight in the antipolar phase is less than that of the pure R3c phase. Interestingly, a colossal electromagnon is observed at polar–antipolar and antiferromagnetic–ferromagnetic phase boundaries. Our work offers an avenue for designing and choosing materials with better magnetodielectric and magnetocapacitance properties.

Graphical abstract: Enhanced electromagnon excitations in Nd-doped BiFeO3 nanoparticles near morphotropic phase boundaries

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Article information


Submitted
27 Jul 2019
Accepted
04 Sep 2019
First published
16 Sep 2019

Phys. Chem. Chem. Phys., 2019,21, 21381-21388
Article type
Paper

Enhanced electromagnon excitations in Nd-doped BiFeO3 nanoparticles near morphotropic phase boundaries

Y. Zhang, Y. Zhang, Q. Guo, D. Zhang, S. Zheng, M. Feng, X. Zhong, C. Tan, Z. Lu, J. Wang, P. Hou, Y. Zhou and J. Yuan, Phys. Chem. Chem. Phys., 2019, 21, 21381
DOI: 10.1039/C9CP04194J

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