采用聚合物辅助沉积法制备外延双层La0.7Sr0.3MnO3/Ba0.7Sr0.3TiO3薄膜

IF 0.9 4区 材料科学 Q3 MATERIALS SCIENCE, CERAMICS Processing and Application of Ceramics Pub Date : 2023-01-01 DOI:10.2298/pac2302197p
Danica Piper, Jelena Vukmirović, Iva Tokovic, Á. Kukovecz, Imre Szenti, M. Novaković, M. Milanović, V. Srdić
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引用次数: 0

摘要

本文采用溶液沉积技术制备了由铁磁锰矿和铁电钛酸盐层组成的双层结构。制备双层薄膜的第一步是采用水基聚合物辅助沉积法(PAD)沉积锰酸盐(LaMnO3或La0.7Sr0.3MnO3)层。在商业Pt/TiO2/SiO2/Si型衬底上自旋镀膜可获得多晶结构,而在(001)取向的SrTiO3单晶衬底上生长外延膜。采用溶胶-凝胶法制备了第二层铁电钛酸盐(BaTiO3或Ba0.7Sr0.3TiO3)。得到的双层结构厚度在100 nm以下,并且由于两种晶体结构的晶格参数相似,在La0.7Sr0.3MnO3表面获得了Ba0.7Sr0.3TiO3薄膜的外延生长。
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Epitaxial bilayer La0.7Sr0.3MnO3/Ba0.7Sr0.3TiO3 thin films obtained by polymer assisted deposition
In this work bilayer structures, composed of ferromagnetic manganite and ferroelectric titanate layers, were obtained by solution deposition technique. The first step in preparation of the bilayer thin films was deposition of manganite (LaMnO3 or La0.7Sr0.3MnO3) layer by water-based polymer assisted deposition (PAD). Polycrystalline structures were obtained when manganite films were deposited by spin coating on commercial Pt/TiO2/SiO2/Si type substrate, whereas epitaxial films were grown on a single crystal SrTiO3 with (001) orientation substrate. The second ferroelectric titanate (BaTiO3 or Ba0.7Sr0.3TiO3) layer was deposited by spin coating using sol-gel method. The obtained bilayer structures have thickness below 100 nm, and epitaxial growth of the Ba0.7Sr0.3TiO3 film on the La0.7Sr0.3MnO3 surface was obtained, due to the similar lattice parameters between these two crystal structures.
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来源期刊
Processing and Application of Ceramics
Processing and Application of Ceramics MATERIALS SCIENCE, CERAMICS-
CiteScore
1.90
自引率
9.10%
发文量
14
审稿时长
10 weeks
期刊介绍: Information not localized
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