Multi-susceptible single-phase BaAlxFe12−xO19 ceramics with both improved magnetic and ferroelectric properties

The structural, electric, and magnetic properties were investigated in multisusceptible BaAlxFe12−xO19 (x = 0, 1, 2, and 3) ceramics. It is found that the magnetic domain structure changes abruptly with the increase in the Al3+ concentration, which is responsible for the abnormal coercivity enhancem...

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Bibliographic Details
Published in:Applied physics letters 2019-06, Vol.114 (24)
Main Authors: Shao, Ye, Huang, Fengzhen, Xu, Xingyu, Yan, Shuo, Yang, Chunbin, Zhou, Min, Lu, Xiaomei, Zhu, Jinsong
Format: Article
Language:English
Subjects:
Applied physics
Barium hexaferrite
Ceramics
Coercivity
Compressive properties
Curie temperature
Electronic devices
Ferroelectric materials
Ferroelectricity
Magnetic domains
Magnetic properties
Magnetism
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Summary:The structural, electric, and magnetic properties were investigated in multisusceptible BaAlxFe12−xO19 (x = 0, 1, 2, and 3) ceramics. It is found that the magnetic domain structure changes abruptly with the increase in the Al3+ concentration, which is responsible for the abnormal coercivity enhancement and the distinct initial magnetization behavior. Smaller Al3+ doping increases the off-center displacement of Fe3+ ions at the trigonal bipyramid by introducing compressive strain, which thus enhances the stability of the ferroelectric phase and improves the ferroelectric Curie temperature of BaFe12O19. Moreover, more stable Al3+ ions can increase the resistance of BaFe12O19. The present results highlight the possible application of Al3+ doped BaFe12O19 ceramics as a multisusceptible single-phase material on multifunctional electronic devices.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.5094069