Stress-coefficient of magnetoelastic anisotropy in flexible Fe, Co and Ni thin films
| Autor: | Xiaohong Xu, Baomin Wang, Yali Xie, Xingcheng Wen, D. Pravarthana, Run-Wei Li, Haigang Liu, Huali Yang, Xiaoyuan Chen, Ping Sheng |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Magnetoresistance 02 engineering and technology Substrate (electronics) 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Polyvinylidene fluoride Thermal expansion Electronic Optical and Magnetic Materials Stress (mechanics) chemistry.chemical_compound Magnetic anisotropy chemistry 0103 physical sciences Thin film Composite material 0210 nano-technology Anisotropy |
| Zdroj: | Journal of Magnetism and Magnetic Materials. 505:166750 |
| ISSN: | 0304-8853 |
| DOI: | 10.1016/j.jmmm.2020.166750 |
| Popis: | Magnetoelastic anisotropy is one of the most essential and fundamental characteristics in the magnetic anisotropy, which holds the core application and broad prospects in advanced flexible magnetic devices. Here, we determined the stress-coefficient of magnetoelastic anisotropy of Fe, Co and Ni thin films deposited on flexible polyvinylidene fluoride (PVDF) substrate. Owing to an anisotropic thermal expansion of PVDF, a uniaxial stress can be effectively generated and transferred to the magnetic films in-situ by changing the temperature. The magnetic anisotropy constants at different compressive stresses were quantitatively investigated with anisotropic magnetoresistance (AMR). Through fitting the AMR curves at different compressive stresses, the stress-coefficient of magnetoelastic anisotropy of Fe, Co and Ni thin films were determined to be ( 6.31 ± 0.19 ) × 10 3 erg cm−3 GPa−1, ( 2.71 ± 0.13 ) × 10 4 erg cm−3 GPa−1 and ( 2.46 ± 0.19 ) × 10 5 erg cm−3 GPa−1, respectively. These values are basic magnetic parameter for magnetic elements, which are helpful for evaluating the performance of magnetic devices under flexible/stretchable conditions. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect