Self-biased converse magnetoelectric effect

摘要

In this letter, we investigate the direct magnetoelectric (DME) and converse magnetoelectric (CME) effects in three-phase metal-ceramic laminate composites. Longitudinally poled and transversely magnetized (L-T) laminate was fabricated by bonding nickel plates between the two particulate magnetoelectric (ME) composite layers of composition 0.8 (0.948 K_(0.5)Na_(0.5)NbO_3 - 0.052 LiSbO_3) - 0.2 (Ni_(0.8)Zn_(0.2)Fe_2O_4) (KNNLS-NZF). Under off-resonance condition, the laminates exhibited hysteretic DME and CME responses as a function of applied bias field (H_(bias)). Self-biased effect characterized by non-zero ME response at zero H_(bias) was observed. The self-biased DME and CME properties were found to be enhanced under resonance conditions. Without external H_(bias), magnetic induction switching was possible by applying AC voltage. These results provide the possibility of using self-biased CME effect in electrically controlled memory devices and magnetic flux control devices.