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Ultra-high resistive switching current ratio and improved ferroelectricity and dielectric tunability performance in a BaTiO3/La0.7Sr0.3MnO3 heterostructure by inserting a SrCoO2.5 layer.
Zhang, Xi; Chen, Xin; Cao, J P; Wang, H W; Deng, W Y; Yang, L H; Lin, K; Li, Q; Li, Q H; Cao, Y L; Deng, J X; Miao, Jun.
Affiliation
  • Zhang X; School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China. J.miao@ustb.edu.cn.
  • Chen X; Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing 100083, China. chenx@ustb.edu.cn.
  • Cao JP; Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing 100083, China. chenx@ustb.edu.cn.
  • Wang HW; School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China. J.miao@ustb.edu.cn.
  • Deng WY; Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing 100083, China. chenx@ustb.edu.cn.
  • Yang LH; School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China. J.miao@ustb.edu.cn.
  • Lin K; Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing 100083, China. chenx@ustb.edu.cn.
  • Li Q; School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China. J.miao@ustb.edu.cn.
  • Li QH; Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing 100083, China. chenx@ustb.edu.cn.
  • Cao YL; Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
  • Deng JX; Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing 100083, China. chenx@ustb.edu.cn.
  • Miao J; Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing 100083, China. chenx@ustb.edu.cn.
Nanoscale ; 16(6): 3081-3090, 2024 Feb 08.
Article in En | MEDLINE | ID: mdl-38240724
ABSTRACT
A BaTiO3/SrCoO2.5 (BTO/SCO) bilayer and a BTO single film were prepared by radio frequency magnetron sputtering on La0.7Sr0.3MnO3 (LSMO) buffered SrTiO3 (001) substrates. Interestingly, compared with reported BTO-based films, the BTO/SCO/LSMO heterostructure has a maximum ON/OFF current ratio of ∼945. More interestingly, compared with the BTO single layer, a larger Pr (∼18.4 µC cm-2) and larger dielectric tunability (∼71.9%) were achieved in the BTO/SCO bilayer. The improved performance may be attributed to the large tetragonality and improved oxygen vacancy concentrations in the BTO/SCO/LSMO heterostructure. Furthermore, our BTO/SCO/LSMO stacks exhibit potential for flexible electronic informational devices.

Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Nanoscale / Nanoscale (Online) Year: 2024 Document type: Article Affiliation country: China Country of publication: Reino Unido

Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Nanoscale / Nanoscale (Online) Year: 2024 Document type: Article Affiliation country: China Country of publication: Reino Unido