This report is on a model and experiment on the nature of mechanical-strain-mediated converse magnetoelectric (CME) effect in a composite of single-crystal iron borate, a canted antiferromagnet with a weak ferromagnetic moment, and ferroelectric lead zirconate titanate (PZT). The piezoelectric strain generated in PZT by an electric field E manifested as a shift in the quasiferromagnetic resonance (FMR) field in iron borate due to strong magnetoelastic interactions. The CME interaction strength determined from data on field shift in FMR versus E is 46–54 MHz cm/kV at 5.5–6.5 GHz. The strength of the CME is comparable to values reported for composites of ferrimagnetic oxides and PZT. A model that considers the effect of piezoelectric deformation on magnetic order parameters and magnetic resonance in iron borate is proposed for the CMEs in the composite and estimated ME coupling coefficients are in good agreement with data. The E tunability of the high-frequency AFMR mode at about 300 GHz is estimated to be on the order of 1.7 MHz kV/cm and is very small relative to the quasi-FMR mode. Composites of iron borate and ferroelectrics are very attractive for use in dual electric field and magnetic field tunable signal processing devices due to strong CME interactions and the need for a rather small bias magnetic field compared with traditional ferrimagnetic oxide based devices.

中文翻译：

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弱铁磁性硼酸铁与锆钛酸铅铁化合物的强逆磁电效应

这份报告是关于在单晶硼酸铁，弱铁磁矩的倾斜反铁磁体和铁电锆钛酸钛铁（PZT）的复合物中机械应变介导的逆磁电（CME）效应性质的模型和实验的。由于强的磁弹性相互作用，电场E在PZT中产生的压电应变表现为硼酸铁中准铁磁共振（FMR）场的移动。CME相互作用强度由FMR与E的场移数据确定在5.5-6.5 GHz时为46-54 MHz cm / kV。CME的强度可与报道的亚铁磁性氧化物和PZT复合材料的值相媲美。针对复合材料中的CME，提出了一个考虑压电变形对硼酸铁磁序参数和磁共振影响的模型，估计的ME耦合系数与数据吻合良好。该Ë大约300 GHz的高频AFMR模式的可调谐性估计约为1.7 MHz kV / cm，相对于准FMR模式而言很小。硼酸铁和铁电体的复合材料具有很强的CME相互作用，并且与传统的基于铁磁氧化物的设备相比，需要非常小的偏置磁场，因此非常适合用于双电场和磁场可调信号处理设备中。