Abstract
Room temperature ferromagnetism of Co doped ZnO was studied using (ZnO/Co) multilayer structure, and the effects of ZnO sub-layer thickness on the RT ferromagnetism was investigated. As for the as-deposited state, the diamagnetism was observed for (ZnO 20Å/Co xÅ) while the ferromagnetism was observed for (ZnO 40Å/Co xÅ). After vacuum-annealed, both showed the RT ferromagnetism and (ZnO 40Å/Co xÅ) structure interestingly showed negative remanence magnetization behavior. UV-Vis spectrometer revealed that Co atoms were substituted with Zn in ZnO and Co cluster was not found in XPS and HRTEM EDS analysis.
| Translated title of the contribution | The Effects of ZnO Sub-layer Thickness on the Room Temperature Ferromagnetism of (ZnO/Co) Multilayer |
|---|---|
| Original language | Korean |
| Pages (from-to) | 137-142 |
| Number of pages | 6 |
| Journal | 마이크로전자 및 패키징학회지 |
| Volume | 25 |
| Issue number | 4 |
| State | Published - Dec 2018 |