当前位置: X-MOL 学术Micro Nanostruct. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Photodielectricity and magnetic field modified photodielectric property of BiAlO3/La0.67Sr0.33MnO3 heterostructure
Micro and Nanostructures ( IF 3.1 ) Pub Date : 2021-03-09 , DOI: 10.1016/j.spmi.2021.106862
Shujin Guo , Bingcheng Luo , Huijuan Dong , Hui Xing , Jianyuan Wang , KeXin Jin , Changle Chen

The investigation on photoferroelectrics regained attention these years as their potential in various applications. In this work, BiAlO3/La0.67Sr0.33MnO3 (BAO/LSMO) heterostructure was deposited on SrTiO3 (STO) substrate with pulse laser deposition method. An abnormal region around 240 K on temperature dependent permittivity is ascribed to phase transition of BAO/LSMO heterostructure. Significant reduction (maximum variation of −32.6%) in dielectric permittivity upon ultraviolet light illumination (intensity of about 0.5 W/cm2) can be attributed to redistribution of built-in electric field in BAO/LSMO interface. The positive magnetodielectricity (maximum variation of 17.2%) stems from negative magnetic resistance and magnetostriction of LSMO. Furthermore, magnetic field significantly modified photodielectricity, exhibiting multifield coupling effect on the BAO/LSMO heterostructure, revealing its potential use for advanced magneto-optoelectronic devices.



中文翻译:

BiAlO 3 / La 0.67 Sr 0.33 MnO 3异质结构的光电介质和磁场修正的光电介质

近年来,由于其在各种应用中的潜力,对光铁电学的研究重新受到关注。在这项工作中,BiAlO 3 / La 0.67 Sr 0.33 MnO 3(BAO / LSMO)异质结构通过脉冲激光沉积法沉积在SrTiO 3(STO)衬底上。BAO / LSMO异质结构的相变归因于与温度相关的介电常数在240 K附近的异常区域。紫外线照射(强度约0.5 W / cm 2)时介电常数显着降低(最大变化为-32.6%))可以归因于BAO / LSMO界面中内置电场的重新分布。LSMO的负磁阻和磁致伸缩是产生正磁电(最大变化17.2%)的原因。此外,磁场显着改变了光电介质,对BAO / LSMO异质结构表现出多场耦合效应,从而揭示了其在先进磁光电子器件中的潜在用途。

更新日期:2021-03-15
down
wechat
bug