Realization of enhanced room temperature ferromagnetism in pure and V-doped ZnO films on TOP functionalization. Issue 1 (15th January 2014)

• Record Type: Journal Article
• Authors: Jayalakshmi, G.; Balasubramanian, T.
• Is Part Of: Journal of materials research. Volume 29:Issue 1(2014)
• Page Start: 158
• Page End: 165
• Publication Date: 2014-01-15
• Subjects: electronegativity, -- functionalization, -- oxygen vacancies, -- ferromagnetism, -- VSM; Materials -- Research -- Periodicals; 620.1105
• DOI: 10.1557/jmr.2013.359
• Languages: English
• ISSNs: 0884-2914

Abstract

Abstract: Abstract : In the present study, we report an activation and enhancement of room temperature ferromagnetism in pure ZnO and V-doped ZnO (Zn0.95 V0.05 O and Zn0.90 V0.10 O) thin films by trioctylphosphine (TOP) functionalization. X-ray diffraction patterns show a slight decrease in the intensity of the diffraction peak on TOP functionalization. Atomic force micrographs of pure and V-doped ZnO films reveal no disorder in the film surface on TOP functionalization. The chemical bond formation of TOP on ZnO film surface was examined by x-ray photoelectron spectroscopy measurements. Photoluminescence measurements of TOP-functionalized ZnO films show enhancements of UV emission and quenching of visible emission. TOP-functionalized ZnO films reveal enhanced ferromagnetic behavior as evidenced from vibrating sample magnetometer measurements.