Effects of annealing atmospheres on the structure and ferromagnetic properties of Fe0.12Cu0.02Zn0.86O thin films
| Autor: | Yee-Shin Chang, Guo-Ju Chen |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Materials science Hydrogen Ferromagnetic material properties Annealing (metallurgy) Process Chemistry and Technology Analytical chemistry chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Crystallinity Crystallography X-ray photoelectron spectroscopy chemistry Sputtering 0103 physical sciences Materials Chemistry Ceramics and Composites Magnetic force microscope Thin film 0210 nano-technology |
| Zdroj: | Ceramics International. 42:18025-18030 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2016.08.063 |
| Popis: | Fe 0.12 Cu 0.02 Zn 0.86 O thin film was deposited on a Si substrate using r. f. sputtering with no heating and an Ar/O 2 ratio of 10%. After deposition, the specimens were annealed at 400 °C for 1 h, in nitrogen and hydrogen atmospheres. The X-ray diffractometry (XRD) analysis results show that the crystallinity of Fe 0.12 Cu 0.02 Zn 0.86 O thin film annealed in a nitrogen atmosphere is better than that of the film annealed in a hydrogen atmosphere. The X-ray photoelectron spectroscope (XPS) results show that there are more oxygen vacancies in the Fe 0.12 Cu 0.02 Zn 0.86 O thin film annealed in a hydrogen atmosphere. The magnetic force microscope (MFM) analysis results also demonstrate that some magnetism particles are precipitated for the Fe 0.12 Cu 0.02 Zn 0.86 O thin film annealed in a hydrogen atmosphere. This results in an improvement in the ferromagnetic properties, and the saturation magnetization is 70.2 emu/cm 3 , which is about 25% larger than that for the as-grown Fe 0.12 Cu 0.02 Zn 0.86 O thin film. |
| Databáze: | OpenAIRE |
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