Title :
Magnetic Augment in the Nitrogen Substituted Bismuth Ferrite
Author :
Longsheng Chen ; Xiaolong Li ; Zhouquan Mao ; Jiang Zhang ; Xi Chen
Author_Institution :
Dept. of Phys., South China Univ. of Technol., Guangzhou, China
Abstract :
The nitrogen substituted bismuth ferrite polycrystal sample BiFeO2.1N0.9 has been successfully synthesized using sol-gel method. Its structural and magnetic properties are investigated. The formation of Fe4+ due to charge compensation is found in BiFeO2.1N0.9 from X-ray photoelectron spectra. The crystal structure of BiFeO3 is barely affected by N doping while the magnetic property is well improved. We propose that it is the coexistence of different superexchanges (Fe-N-Fe and Fe-O-Fe) that breaks the magnetic cancellation effect of the spin spiral, hence increasing the macroscopic magnetization.
Keywords :
X-ray photoelectron spectra; bismuth compounds; charge compensation; crystal structure; doping; ferrites; magnetisation; multiferroics; nitrogen; sol-gel processing; superexchange interactions; BiFeO2.1N0.9; Fe4+ formation; N doping; X-ray photoelectron spectra; charge compensation; crystal structure; macroscopic magnetization; magnetic augment; magnetic cancellation effect; magnetic properties; nitrogen substituted bismuth ferrite polycrystal sample; sol-gel method; spin spiral; structural properties; superexchanges; Bismuth; Crystals; Doping; Magnetic properties; Magnetization; Magnetoelectric effects; Powders; Magnetism; multiferroics; nitrogen; superexchange;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2015.2447546
