Study on multiferroic properties in Ni80Fe 20BaTiO3 bilayer films

Yi Chun Chen, Tsung Hsuan Hong, Zhen Xi Jiang, Qi Rui Lin

研究成果: Article同行評審

8 引文 斯高帕斯(Scopus)

摘要

In this study, we investigated the magnetoelectric coupling effect in Ni80 Fe20 BaTi O3 (NiFe/BTO) bilayer films. Two different samples with interface roughnesses of about 5 and 20 nm were synthesized by controlling the BTO deposition rates. The electrostatic force microscope scanning shows an intrinsic surface potential about 0.2 V existing in both NiFe/BTO bilayer films. This phenomenon is due to the bond charge induced by interface dipole moments as the interface-bonding model predicted. The films show good ferroelectric properties, but the hysteresis shows bias asymmetry due to the interface effect. The magnetic coercive fields of NiFe/BTO system increase with the interface roughness. The large magnetoelectric coupling is observed from an irregular change of magnetization near the ferroelectric Curie temperature. The multiferroic properties were enhanced by the interface geometry.

原文English
文章編號07E305
期刊Journal of Applied Physics
103
發行號7
DOIs
出版狀態Published - 2008

All Science Journal Classification (ASJC) codes

  • 物理與天文學 (全部)

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