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Enhanced stability of magnetoelectric gyrators under high power conditions
Applied Physics Letters ( IF 4 ) Pub Date : 2017-10-30 , DOI: 10.1063/1.5001287
Chung Ming Leung 1 , Xin Zhuang 1 , Min Gao 1 , Xiao Tang 1 , Junran Xu 1 , Jiefang Li 1 , Jitao Zhang 2 , G. Srinivasan 2 , D. Viehland 1
Affiliation  

In this study, three different coil-based magnetoelectric (ME) gyrators of different geometries, including gyrators with high power output, have been designed and characterized. These included two magnetostrictive/piezoelectric/magnetostrictive (M-P-M) and one piezoelectric/magnetostrictive/piezoelectric (P-M-P) type ME gyrators, which consisted of nickel zinc ferrite (NZFO) and lead zirconate titanate (PZT) ceramic plates. Compared with M-P-M ME gyrators, the P-M-P ones exhibited a higher power efficiency (η) of 85% when operated at resonance under an optimal magnetic bias field (HBias) of 40 Oe at low power conditions. It retained a relatively high efficiency of η = 79% under a high input power density of 2.87 W/cm3. A low reduction in the magnetomechanical coupling and mechanical quality (k33,m and Qm) factors of the NZFO ferrite layer in the ME gyrator explains the resilience of the P-M-P type structure with increasing power drive. The findings open the possibility of using ME gyrators in high power a...

中文翻译:

增强磁电回转器在高功率条件下的稳定性

在这项研究中,设计并表征了三种不同几何形状的基于线圈的磁电 (ME) 回转器,包括具有高功率输出的回转器。其中包括两个磁致伸缩/压电/磁致伸缩 (MPM) 和一个压电/磁致伸缩/压电 (PMP) 型 ME 回转器,由镍锌铁氧体 (NZFO) 和锆钛酸铅 (PZT) 陶瓷板组成。与 MPM ME 回转器相比,PMP 回转器在低功率条件下在 40 Oe 的最佳磁偏置场 (HBias) 下谐振运行时表现出更高的功率效率 (η),为 85%。在 2.87 W/cm3 的高输入功率密度下,它保持了 η = 79% 的相对高效率。磁力耦合和机械质量的降低幅度很小 (k33, ME 回转器中 NZFO 铁氧体层的 m 和 Qm) 因子解释了 PMP 型结构随功率驱动增加的弹性。研究结果开启了在高功率下使用 ME 回转器的可能性……
更新日期:2017-10-30
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