Magnetic Properties of the Dilute Magnetic Semiconductor Zn1-xCoxO Nanoparticles
| Autor: | Prissana Robkhob, I. Ming Tang, S. Thongmee |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Photoluminescence Materials science Scanning electron microscope Doping Analytical chemistry Nanoparticle Magnetic semiconductor Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials Condensed Matter::Materials Science Magnetization Ferromagnetism 0103 physical sciences Antiferromagnetism 010306 general physics |
| Zdroj: | Journal of Superconductivity and Novel Magnetism. 32:3637-3645 |
| ISSN: | 1557-1947 1557-1939 |
| Popis: | The magnetic properties of the dilute magnetic semiconductor (DMS) are due the existence of two competing interactions, a direct ferromagnetic interaction and an indirect antiferromagnetic interaction. This is well established in the Zn1-xMnxO DMS, but is controversy in the Zn1-xCoxO DMS. To gain insights, a series of Co-substituted ZnO NRs (x = 0, 0.01, 0.02, 0.03, 0.04, and 0.05) have been fabricated using a low-temperature hydrothermal method. The magnetization of these Co-doped ZnO NPs was measured with a vibrating sample magneto-meter. Expressing the magnetization results in units of Bohr magnetons per Co ions, it is found that the ferromagnetic contributions become more dominant as more magnetic Co ions are doped into the ZnO NPs. X-ray diffraction, energy dispersive X-ray, scanning electron microscopy, and photoluminescence measurements were done to characterize the Co:ZnO NPs. |
| Databáze: | OpenAIRE |
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