Cr additive effects on the nanostructure, magnetic properties, and ordering kinetics of FePtCu thin films
| Autor: | Yung-Hui Shih, Chih-Li Wang, Yi-Jui Chiu, Guo-Ju Chen, Sheng-Rui Jian |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Alloy 02 engineering and technology Surfaces and Interfaces General Chemistry Coercivity engineering.material 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Surfaces Coatings and Films Magnetization Grain growth Differential scanning calorimetry Chemical engineering Sputtering 0103 physical sciences Materials Chemistry engineering Crystallite Thin film 0210 nano-technology |
| Zdroj: | Surface and Coatings Technology. 350:913-917 |
| ISSN: | 0257-8972 |
| DOI: | 10.1016/j.surfcoat.2018.03.070 |
| Popis: | In this study, the (FePt)94–xCu6Crx (x = 0, 6.54, 8.33, 11.11) alloy films were prepared by sputtering and then the effects of Cr content and heat treatment on the nanostructures and magnetic properties of polycrystalline FePtCu films are examined. After adding Cr atoms to FePtCu films, the surrounding Cr layer of the grain limited grain growth of (FePt)94−xCu6Crx (x = 0, 6.54, 8.33, 11.11) alloy films, even when those films had been annealed at temperatures as high as 600 °C. The differential scanning calorimetry traces revealed that the addition of Cr atoms enhanced the activation energy of ordering from 87 kJ mol−1 for the (FePt)94–xCu6 film to 264 kJ mol−1 for the (FePt)94–xCu6Crx film (x = 6.54). The (FePt)94–xCu6Crx (x = 6.54) film displayed a coercive force of 12.8 kOe and a magnetization of 658 emu cc−1. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect