Structural, magnetic and magnetostrictive properties of Fe83Ga17 films with a Ti adhesion layer
| Autor: | Yalong Zhao, Xing Mu, Jiquan Wang, Jiaxing Shi, Cifu Lu, Hui Jiang, Jie Zhu, Mingming Li, Wenlong Hu, Wu Ming |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Magnetic domain Magnetostriction 02 engineering and technology Sputter deposition 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials Magnetic field 0103 physical sciences Texture (crystalline) Composite material Thin film 0210 nano-technology Layer (electronics) Galfenol |
| Zdroj: | Journal of Magnetism and Magnetic Materials. 475:662-667 |
| ISSN: | 0304-8853 |
| Popis: | In this study, Fe83Ga17 thin films are deposited on Si(1 0 0) and Si(1 1 1) substrates with a Ti layer by using DC magnetron sputtering. The addition of Ti layer does not significantly change the magnetic and magnetostrictive properties of the Fe-Ga film, however it can effectively prevent the abscission of film during heat treatment. The Fe83Ga17 films deposited on Si(1 0 0) and Ti/Si(1 0 0) have relatively small coercive forces, low saturation magnetic fields, and the magnetostriction curves are easily saturated in a low field. The magnetostriction of Fe83Ga17 on Ti/Si(1 0 0) can reach 105 ppm. The Fe83Ga17 thin films on Si(1 1 1) and Ti/Si(1 1 1) have large saturation magnetic fields (about 61Oe) and the magnetostriction curve shows linearity, which can be used in magnetic field detection, micro actuators and magnetoelectric (ME) devices. Dendritic domains and stripe domains are observed in these samples due to the influence of different internal stresses. After a vacuum heat treatment, the internal stress was released. At the same time, the structure of both the dendritic domains and stripe domains turns into a dot domain. The EBSD results show that annealed Fe-Ga films sputtered on a Ti layer have a very weak texture. |
| Databáze: | OpenAIRE |
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