Abstract
The structural and magnetic behaviors are studied in the composites (x) BiFe0.95Co0.05O3: (1-x) La0.7Ca0.3MnO3. An influence on the lattice parameters and magnetic states of BiFe0.95Co0.05O3 (BFCO) to the La0.7Ca0.3MnO3 (LCMO) are investigated. Although the variation of the relative X-ray intensity of LCMO to BFCO with composition (x) in XRD patterns and the randomly distributed small nanoparticle of LCMO (~200 nm) mixed in the large nanoparticle of BFCO (~900 nm) given by SEM images indicate an almost immiscibility of BFCO and LCMO in composites obtained by solid solution method, an obvious change of lattice parameters indicates their mutual influence on lattice structure. A detail magnetic investigation of the composites shows that the Griffiths phase is increased with increase of composition x due to the incorporation of ferromagnetism of BFCO to the paramagnetic phase of LCMO. An approximate magnetic phase diagram for the composites is established, which would be helpful for understanding the magnetic singularity of the composites with colossal magnetoresistance and multiferroics.
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Acknowledgements
H.G. Zhang acknowledges the financial support from the National Natural Science Foundation of China (No. 11605092), the Jiangsu Youth Fund of Natural Science (No. BK20130858), and the Science Research Foundation of Nanjing University of Posts and Telecommunications (Nos. NY215091, NY213055, and NY213180). L. Xie acknowledges the support from the Beijing Municipal Education Commission (KM20150009012).
Funding
This study was funded by National Natural Science Foundation of China (grant number 11605092), Beijing Municipal Education Commission (grant number KM20150009012), Jiangsu Youth Fund of Natural Science (grant number BK20130858), and Science Research Foundation of Nanjing University of Posts and Telecommunications (grant numbers NY215091, NY213055, and NY213180).
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Zhang, H., Fu, D., Wang, Y. et al. The structural and magnetic investigation of (x) BiFe0.95Co0.05O3: (1-x) La0.7Ca0.3MnO3 composites. J Nanopart Res 19, 382 (2017). https://doi.org/10.1007/s11051-017-4079-0
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DOI: https://doi.org/10.1007/s11051-017-4079-0