PZT铁电材料的总剂量辐照效应实验研究

Total dose radiation effect on PZT ferroelectric material

采用传统固相反应法制备PZT铁电材料,并制作成平行平板无源电容器结构,在ELV-8电子直线加速器上进行了总剂量效应辐照实验。结果表明:样片经过不同强度高能高速直流电子束辐照后的电滞回线随着辐照强度的增加,电滞回线所包围的面积逐渐减小,饱和极化强度、剩余极化强度和矫顽场呈线性减小。其中当辐照剂量为1×108rad(Si)时,饱和极化强度、剩余极化强度和矫顽场的衰减幅度分别为14.1%,15.0%和2.7%,样片抗总剂量辐照能力可达1×108rad(Si)。

Lead zirconate titanate（PZT） ferroelectric materials were prepared by the traditional solid phase reaction method, and the passive capacitors of parallel slab were processed. At last the total dose radiation effect on the PZT ferroelectric material capacitors with the ELV-8 electron linear accelerator were tested. The ferroelectric performance parameters of capacitors before and after radiation were tested and compared. The results show that the encircling area of polarization-field hysteresis loop is grad- ually decreased, and that the parameters such as the saturation polarization, the remnant polarization and the coercive field exhibit a linear decrease with the increase of irradiation dose of high energy electron. When the irradiation dose is 1 × 10^8 rad（Si）, the attenuation ranges of those parameters are respectively 14.1%, 15.0 % and 2.7 %. It is obvious that the antl-total dose radiation capability of the sample plates can reach 1 × 10^8 tad （Si）.