Role of Ho Doping in Magnetization Mechanism of BiFeO3 Thin Films
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BiFeO3 (BFO) as one of the considerable interesting multiferroic materials has been widely investigated for its fantastic science and potential application. Herein, effects of Ho doping on the structure, morphology, and magnetic properties of BFO thin films were systematically studied. X-ray diffraction (XRD) indicates a successful substitution of Ho at Bi site and a transition in crystal structure of Bi0.9Ho0.1FeO3 (BHFO) thin film. Raman scattering spectrum is further evidence of XRD analysis results. The Ho-doped BFO thin films possess uniform morphology. X-ray photoelectron spectroscopy (XPS) confirms that the substitution of Bi3+ ions with Ho3+ ions is beneficial. The remanent magnetization of BHFO thin films is about three times than that of the BFO thin films under a maximum magnetic field of 15,000 Oe. And we systematically discussed several possible reasons for the enhancement of magnetization.
KeywordsBiFeO3 Multiferroic Substitution Crystal structure Magnetization
This work is supported by the National Natural Science Foundation of China (Grant No. 51441006), the National Natural Science Foundation of China (Grant No. 51608226), the Thirteenth Five-Year Program for Science and Technology of Education Department of Jilin Province (Item No. JJKH20180769KJ).
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