NDLI: Unusual continuous dual absorption peaks in Ca-doped BiFeO<sub>3</sub> nanostructures for broadened microwave absorption

Content Provider	Royal Society of Chemistry (RSC)
Author	Song, Wei-Li Liu, Xing-Da Hou, Zhi-Ling Cao, Wen-Qiang Li, Zhong-Jun Shao, Xiao-Hong Cao, Mao-Sheng
Copyright Year	2016
Abstract	Electromagnetic absorption materials have received increasing attention owing to their wide applications in aerospace, communication and the electronics industry, and multiferroic materials with both polarization and magnetic properties are considered promising ceramics for microwave absorption application. However, the insufficient absorption intensity coupled with the narrow effective absorption bandwidth has limited the development of high-performance multiferroic materials for practical microwave absorption. To address such issues, in the present work, we utilize interfacial engineering in BiFeO3 nanoparticles via Ca doping, with the purpose of tailoring the phase boundary. Upon Ca-substitution, the co-existence of both R3c and P4mm phases has been confirmed to massively enhance both dielectric and magnetic properties via manipulating the phase boundary and the destruction of the spiral spin structure. Unlike the commonly reported magnetic/dielectric hybrid microwave absorption composites, Bi0.95Ca0.05FeO3 has been found to deliver unusual continuous dual absorption peaks at a small thickness (1.56 mm), which has remarkably broadened the effective absorption bandwidth (8.7–12.1 GHz). The fundamental mechanisms based on the phase boundary engineering have been discussed, suggesting a novel platform for designing advanced multiferroic materials with wide applications.
Starting Page	10415
Ending Page	10424
Page Count	10
File Format	HTM / HTML PDF
ISSN	20403364
Volume Number	8
Issue Number	19
Journal	Nanoscale
DOI	10.1039/c6nr00223d
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Microwave Dopant Bismuth ferrite Dielectric Spin structure Dual space
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology

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