Undistorted 180° phase reversal of magnetoelectric coupling in bi-layered multiferroic laminate

• Published in: Journal of magnetism and magnetic materials 2020-01, Vol.494, p.165802, Article 165802
• Main Authors: Zhang, Jitao, Li, Kang, Chen, Dongyu, Filippov, D.A., Zhang, Qingfang, Wu, Jie, Tao, Jiagui, Cao, Lingzhi, Srinivasan, Gopalan
• Format: Article
• Language: English
• Subjects: Communications systems; Phase shifters
• ISSN: 0304-8853; 1873-4766
• DOI: 10.1016/j.jmmm.2019.165802

•Undistorted 180° phase reversal can be achieved by reversing HDC directions.•Dynamic piezomagnetic response accounts for the origins of 180° phase reversal.•Great promising applications in ME phase shifters and inverters are provided. A methodology of rotating the applied static magnetic field on Ni0.8Zn0.2Fe2O4 (NZFO)/PZT-8 magnetoelectric laminate, was introduced to realize 180° phase reversal with constant amplitude, which is invariably required for phase-based communication system, engineering technology and microelectronic devices. Through further decoding the phase information existed in magnetoelectric coefficient, we found that the undistorted 180° phase reversal can be achieved once the applied field was reversed. Moreover, piezomagnetic response can essentially track the magnetoelectric response under optimum bias with the variations of rotation angle, and then the origins can be well explained. Experimental results show that the maximum resonance ME voltage coefficient of +51.72 V/cm Oe and −51.93 V/cm Oe were obtained in angle of θ = 0° and 180°, respectively. These results provide great possibilities for practical applications in ME phase shifters and inverters.