Investigations on structural, magnetic and electronic structure of Gd-doped ZnO nanostructures synthesized using sol-gel technique

Kaur, Palvinder and Kumar, Sanjeev and Chen, Chi Liang and Hsu, Ying-Ya and Chan, Ting-Shan and Dong, Chung-Li and Srivastava, C and Singh, Anupinder and Rao, SM (2016) Investigations on structural, magnetic and electronic structure of Gd-doped ZnO nanostructures synthesized using sol-gel technique. In: APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 122 (3).

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Abstract

GdxZn1-xO (x = 0, 0.02, 0.04 and 0.06) nanostructures have been synthesized using sol-gel technique and characterized to understand their structural and magnetic properties. X-ray diffraction (XRD) results show that Gd (0, 2, 4 and 6 %)-doped ZnO nanostructures crystallized in the wurtzite structure having space group C3(v) (P6(3)mc). Photoluminescence and Raman studies of Gd-doped ZnO powder show the formation of singly ionized oxygen vacancies. X-ray absorption spectroscopy reveals that Gd replaces the Zn atoms in the host lattice and maintains the crystal symmetry with slight lattice distortion. Gd L-3-edge spectra reveal charge transfer between Zn and Gd dopant ions. O K-edge spectra also depict the charge transfer through the oxygen bridge (Gd-O-Zn). Weak magnetic ordering is observed in all Gd-doped ZnO samples.

Item Type:	Journal Article
Publication:	APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
Publisher:	SPRINGER
Additional Information:	Copy right for this article belongs to the SPRINGER, 233 SPRING ST, NEW YORK, NY 10013 USA
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	02 Apr 2016 09:21
Last Modified:	02 Apr 2016 09:21
URI:	http://eprints.iisc.ac.in/id/eprint/53539

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