Influence of CaCO3 and SiO2 additives on magnetic properties of M-type Sr ferrites
| Autor: | C. C. Huang, Yung Hsiung Hung, Ming Feng Kuo, Tong Yin Hung, Chun-Hu Cheng, Chun Chung Shaw, Chi Ping Lee, Ai Hua Jiang, Ching Hsuan Liou, Yi Chen Wang |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure 01 natural sciences Electronic Optical and Magnetic Materials Particle alignment Grain growth visual_art 0103 physical sciences visual_art.visual_art_medium Ferrite (magnet) Ceramic Composite material 0210 nano-technology |
| Zdroj: | Journal of Magnetism and Magnetic Materials. 451:288-294 |
| ISSN: | 0304-8853 |
| DOI: | 10.1016/j.jmmm.2017.09.070 |
| Popis: | An experiment was carried out to investigate the influence of CaCO3 and SiO2 additives on the magnetic and physical properties of M-type Sr ferrites by changing experimental parameters such as the additive composition and Ca/Si ratio. Specimens were prepared by conventional ceramic techniques. It was found that the magnetic properties (Br = 4.42 kG, iHc = 3.32 kOe and (BH)max = 4.863 MGOe) were considerably improved upon adding CaCO3 = 1.1% and SiO2 = 0.4 wt% together with Co3O4, and the mechanical properties thereof were acceptable for motor applications. It was revealed that CaCO3 and SiO2 additives led to an upswing in the magnetic properties via the enhancement of uniform grain growth, particle alignment, and the densification of Sr ferrite. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect