Structural and magnetic properties of the transition metals (TM Co, Ni) and Nb co-doped SrTiO3 thin films
| Autor: | Pavol Šutta, Aleš Hendrych, Rostislav Medlín, Petr Novák, R. Siddheswaran, Sang-II Kim, Ondſej Životský, Seung-Young Park |
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| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Materials science Mechanical Engineering 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure 01 natural sciences Amorphous solid Monocrystalline silicon Crystallography Mechanics of Materials Sputtering 0103 physical sciences X-ray crystallography General Materials Science Crystallite Thin film Selected area diffraction 0210 nano-technology |
| Zdroj: | Materials Research Bulletin. 83:193-200 |
| ISSN: | 0025-5408 |
| DOI: | 10.1016/j.materresbull.2016.06.012 |
| Popis: | In this article, we report the fabrication of transition metal (TM Co/Ni) and Nb co-doped SrTiO3 (Ni0.06Nb0.05Sr0.12Ti0.16O0.61 and Co0.08Nb0.05Sr0.11Ti0.15O0.61) thin films of thickness around 1.1 μm on monocrystalline Si (100) substrate by RF sputtering at 350 °C. The as-deposited amorphous films were annealed at 800 °C in vacuum to obtain crystalline structure. The X-ray diffraction studies revealed that the annealed polycrystalline films are having a cubic perovskite structure. The surface and cross-sectional morphologies, grain size, elements and structure of the films were studied by atomic force microscope, scanning and transmission electron microscopes. The microstructure and selected area electron diffraction (SAED processed pattern) also confirms the perovskite structure of the SrTiO3. The magnetic behaviour of the films was studied by vibrating sample magnetometry and magneto-optic Kerr measurements. The ferromagnetic responses were observed in both materials at room temperature. |
| Databáze: | OpenAIRE |
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