EPR investigation of pure and Co-doped ZnO oriented nanocrystals. (14th December 2016)

• Record Type: Journal Article
• Authors: Savoyant, A; Alnoor, H; Bertaina, S; Nur, O; Willander, M
• Is Part Of: Nanotechnology. Volume 28:Number 3(2017)
• Publication Date: 2016-12-14
• Subjects: nanorods -- magnetic properties -- electron paramagnetic resonance -- diluted magnetic semiconductors; 61.46.Hk -- 61.72.uj -- 75.75.Cd -- 76.30.Fc; Nanotechnology -- Periodicals; Nanotechnology -- Periodicals; Nanotechnology; Publications périodiques; Nanotechnologies; Periodicals; 620.5
• DOI: 10.1088/1361-6528/28/3/035705
• Languages: English
• ISSNs: 0957-4484

Abstract

Abstract: Pure and cobalt-doped zinc oxide aligned nanorods have been grown by the low-temperature (90 °C) aqueous chemical method on amorphous ZnO seed layer, deposited on a sapphire substrate. High crystallinity of these objects is demonstrated by the electron paramagnetic resonance investigation at liquid helium temperature. The successful incorporation of Co 2+ ions in substitution of Zn 2+ ones in the ZnO matrix has also been confirmed. A drastic reduction of intrinsic ZnO nanorods core defects is observed in the Co-doped samples, which enhances the structural quality of the NRs. The quantification of substitutional Co 2+ ions in the ZnO matrix is achieved by comparison with a reference sample. The findings in this study indicate the potential of using the low-temperature aqueous chemical approach for synthesizing material for spintronics applications.