期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 26, 期 42, 页码 9338-9347出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.202000129
关键词
B-site cationic ordering; chemical growth methods; double perovskites; ferromagnetism; polymer-assisted deposition
资金
- Spanish Ministry of Science, Innovation and Universities through Severo Ochoa project - European Regional Development Fund [SEV-2015-04969]
- Spanish Ministry of Science, Innovation and Universities through SUMATE project - European Regional Development Fund [RTI2018-095853-B-C21]
- Spanish Ministry of Science, Innovation and Universities through SPINCURIOX project - European Regional Development Fund [RTI2018-099960-B-I00]
- China Scholarship Council (CSC)
- Universitat Autnoma de Barcelona (UAB)
Double perovskite structure (A(2)BB ' O-6) oxides exhibit a breadth of multifunctional properties with a huge potential range of applications in fields as diverse as spintronics, magneto-optic devices, or catalysis, and most of these applications require the use of thin films and heterostructures. Chemical solution deposition techniques are appearing as a very promising methodology to achieve epitaxial oxide thin films combining high performance with high throughput and low cost. In addition, the physical properties of these materials are strongly dependent on the ordered arrangement of cations in the double perovskite structure. Thus, promoting spontaneous cationic ordering has become a relevant issue. In this work, our recent achievements by using polymer-assisted deposition (PAD) of environmentally friendly, water-based solutions for the growth of epitaxial ferromagnetic insulating double perovskite La2CoMnO6 and La2NiMnO6 thin films on SrTiO3 and LaAlO3 single-crystal substrates are presented. It is shown that the particular crystallization and growth process conditions of PAD (very slow rate, close to thermodynamic equilibrium conditions) promote high crystallinity and quality of the films, as well as favors spontaneous B-site cationic ordering.
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