Abstract
A polycrystalline Bi(Fe0.95Cu0.05)O3 sample has been prepared by sol–gel method. The analysis of X-ray diffraction patterns demonstrates that the sample exhibits a rhombohedral structure. Compared with BiFeO3, the magnetic behavior of Bi(Fe0.95Cu0.05)O3 sample almost does not change. Raman data analysis indicates that the lattice distortion exists in a Bi(Fe0.95Cu0.05)O3 sample. The results of differential scanning calorimetry demonstrate that Cu2+ ion doping affects the magnetic order and decreases the Néel temperature of BiFeO3. The lattice distortion and the counteractive role between the intervening on the spin chains of Fe ions make the magnetic properties of Cu-doped BiFeO3 not increase.
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This work is financially supported by NSFC under contracts Nos. U1232133 and 51172110 and by the research project of Nanjing University of Posts and Telecommunications under contracts No. NY212099 and NY208027. Moreover, the authors would like to thank BSRF for its beamtime.
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Li, Y., Fan, Y., Zhang, H. et al. Structural, Thermal, and Magnetic Properties of Cu-doped BiFeO3 . J Supercond Nov Magn 27, 1239–1243 (2014). https://doi.org/10.1007/s10948-013-2391-1
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DOI: https://doi.org/10.1007/s10948-013-2391-1