The study of the electric and magnetic properties of PbZr0.2Ti0.8O3–BiFeO3 multilayers
The study of the electric and magnetic properties of PbZr0.2Ti0.8O3–BiFeO3 multilayers
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DOI：
10.1016/j.tsf.2011.03.136
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发表时间：
2011-07
期刊：
影响因子：
2.1
通讯作者：
V. Stancu;C. Drăgoi;V. Kuncser;G. Schinteie;L. Trupina;E. Vasile;L. Pintilie
中科院分区：
文献类型：
--
作者：
V. Stancu;C. Drăgoi;V. Kuncser;G. Schinteie;L. Trupina;E. Vasile;L. Pintilie
对Pt/Si晶片上沉积的PbZr{sub 0.2}Ti{sub 0.8}O{sub 3}-BiFeO{sub 3}对称结构在不同层数下的电、磁测量结果进行了比较，以分析界面对宏观性能的影响。研究发现，电容-电压特性的形状和大小，以及铁电和磁滞的形状和参数，取决于预期多层结构中界面的数量。在低外加磁场作用下，BiFeO{sub 3}薄膜在室温下由无序自旋玻璃相逐渐转变为无补偿的反铁磁相。通过增大磁场，可以在低温下获得部分类铁磁序。所观察到的系统的电和磁行为的变化与电偶极子和磁矩的无序程度的增加有关，这是由于层数和结晶处理的增加。
The results of the electric and magnetic measurements performed on PbZr{sub 0.2}Ti{sub 0.8}O{sub 3}-BiFeO{sub 3} symmetric structures, deposited on Pt/Si wafers, were compared for different number of layers in order to analyse the effect of interfaces over the macroscopic properties. It was found that the shape and magnitude of the capacitance-voltage characteristic, as well as the shape and parameters of the ferroelectric and magnetic hysteresis, depend on the number of interfaces in the intended multilayer structure. A temperature induced gradual transition from a magnetically disordered spin glass like phase of low temperature to an uncompensated antiferromagnetic phase at room temperature takes place in the BiFeO{sub 3} films, under low applied magnetic fields. A partial ferromagnetic like order can be obtained at low temperatures by increasing the field. The observed changes in the electric and magnetic behaviour of the systems were related to an increased degree of disorder for electric dipoles and magnetic moments, due to the increased number of layers and crystallization treatments.