Incorporation of cobalt into ZnO nanoclusters

✍ Scribed by Igor Ozerov; Françoise Chabre; Wladimir Marine

• Book ID: 103844982
• Publisher: Elsevier Science
• Year: 2005
• Tongue: English
• Weight: 296 KB
• Volume: 25
• Category: Article
• ISSN: 0928-4931
• DOI: 10.1016/j.msec.2005.07.007

✦ Synopsis

The structural, optical and magnetic properties of nanostructured ZnO films co-doped with cobalt and aluminium have been studied. The nanocrystalline films, with cluster sizes in range 50 -100 nm, were deposited by pulsed laser ablation in a mixed atmosphere of oxygen and helium. The nanocrystallites have the wurtzite structure and are highly oriented with the c-axis perpendicular to the substrate. Both optical and electron spin resonance (ESR) spectroscopy results show the substitutional incorporation of Co 2+ ions on the Zn site inside the ZnO nanoclusters. The temperature dependence of the ESR spectra follows Curie law corresponding to a paramagnetic material.