Simultaneously improved magnetization and polarization of flexible film of BiFeO₃-LaY₂Fe₅O₁₂ composites

ABSTRACT

BiFeO₃-LaY₂Fe₅O₁₂ (BFO-LYIG) composites and the corresponding flexible films were prepared via solid-sate reaction and spin coating respectively. The composites were used for structures and magnetic properties characterization, while the flexible films were used for multiferroic properties measurement. The results show that the BFO and LYIG phases can coexist in the composite with no impurity phase for certain mole ratio, but with obvious impurity phases for other mole ratios. Compared to the weak magnetic and ferroelectric property of BFO, the magnetization and polarization of the composites can be simultaneously improved due to the high magnetization and resistivity of LYIG.

KEYWORDS:

• Multiferroic materials
• ferroelectric and ferromagnetic properties
• flexible film

Additional information

Funding

The authors would like to express their gratitude to Ms. X.X. Shi and Ms. X.J. Guan for their help with experiments. This work was supported by the National Key Research and Development Program (2016YFB1100101), the National Natural Science Foundation of China (51471135), Shaanxi Science and Technology Program (2017KW-ZD-07) and Creation for Graduate Students in NWPU (Z2017194).