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Magnetic field induced ferroelectric and dielectric properties in Pb(Zr0.5Ti0.5)O3 films containing Fe3O4 nanoparticles |
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| Authors: | Wei Bai Xiangjian Meng Xia Zhu Weijing Liu Junhao Chu |
| Affiliation: | a National Lab for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Science, 500 Yutian Road, Shanghai 200083, P.R. China b Innovation College, Yan'an University, Xi'an, 710100, P.R. China c Key Lab of Polar Materials and Devices, Ministry of Education, East China Normal University, Shanghai 200062, P.R. China |
| Abstract: | About 1.05 µm-thick Pb(Zr0.5Ti0.5)O3 (PZT) films containing Fe3O4 nanoparticles were deposited on LaNiO3-coated silicon substrates through a sol-gel technique. Fe3O4 nanoparticles were effectively dispersed into PZT solution under the involvement of polyvinylpyrrolidone. X-ray diffraction confirmed the coexistence of PZT and Fe3O4 phases without other impurity phases. Scanning electron microscope revealed that the thick composite films possess well-defined and crack-free microstructure. The composite films exhibit good ferroelectric and ferromagnetic properties at room temperature. An obvious magnetodielectric effect has been demonstrated in the Pb(Zr0.5Ti0.5)O3/Fe3O4 composite films. Magnetic field induced change in ferroelectric polarization loop may support the possible magnetoelectric coupling between PZT and Fe3O4 phases. |
| Keywords: | 78 66 Sq 77 84 -s 75 80 + 0 12 q |
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