Abstract
In this study, 0.5Ba(Zr0·2Ti0.8)O3-0.5Ba0·7Ca0·3TiO3(0.5BZT-0.5BCT) thin films were deposited on Pt/Ti/SiO2/Si substrate, and then small area Fe65Co35(FeCo) films were deposited on 0.5BZT-0.5BCT films. The hysteresis loops and piezoelectric curves of 0.5BZT-0.5BCT films were studied. The results show that the piezoelectric displacement of 0.5BZT-0.5BCT films is 63 Å, the residual polarization intensity is 2.76 μC/cm2 and the coercive field is 110 kV/cm. 0.5BZT-0.5BCT/FeCo composite films exhibit typical magnetic hysteresis loops and stripe-like domains, the in-plane and out-of-plane coercivities are 10 Oe and 94 Oe, respectively, which indicates that the thin films have good soft magnetic properties. The current-voltage (I–V) curves of FeCo films on 0.5BZT-0.5BCT films were studied, the I–V behaviors of the thin films could be modulated by applying bias voltage, resulting in a resistance switching behavior. The maximum resistance change is 94% at 10 V bias voltage and 1 V scan voltage.
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