Structural, compositional and magnetic characterization of bulk V                         2                         O                         5                          doped ZnO system

S. Karamat; R. S. Rawat; P. Lee; T. L. Tan; R. V. Ramanujan; W. Zhou

doi:10.1016/j.apsusc.2009.09.039

Structural, compositional and magnetic characterization of bulk V ₂ O ₅ doped ZnO system

S. Karamat, R. S. Rawat^*, P. Lee, T. L. Tan, R. V. Ramanujan, W. Zhou

^*Corresponding author for this work

Nanyang Technological University

Research output: Contribution to journal › Article › peer-review

56 Citations (Scopus)

Abstract

This paper investigates the structural, compositional and magnetic properties of vanadium doped ZnO bulk samples prepared by solid state reaction technique. The Rietveld refinement analysis for XRD results of samples showed small change in lattice parameters for 3 and 5% vanadium doped ZnO samples indicating the substitution of Zn ²⁺ ions by vanadium ions in ZnO lattice. Raman spectroscopy reveals the change in ZnO modes positions due to vanadium doping. The appearance of E ₁ and E ₂ modes showed that the wurtzite structure of ZnO is still maintained after doping of vanadium oxide. XPS analysis confirms the presence of the different elements and oxidation states of vanadium ions. M-H curves obtained from VSM showed weak ferromagnetism in the samples. The observation of ferromagnetic behavior indicates the formation of ZnVO phase with V ²⁺ ion substitution in the ZnO lattice. XPS scans of the etched bulk samples confirmed the 2+ oxidation state of vanadium ions in our samples explaining the origin of ferromagnetism.

Original language	English
Pages (from-to)	2309-2314
Number of pages	6
Journal	Applied Surface Science
Volume	256
Issue number	8
DOIs	https://doi.org/10.1016/j.apsusc.2009.09.039
Publication status	Published - Feb 1 2010
Externally published	Yes

ASJC Scopus Subject Areas

General Chemistry
Condensed Matter Physics
General Physics and Astronomy
Surfaces and Interfaces
Surfaces, Coatings and Films

Keywords

Raman spectroscopy
V doped ZnO
XPS

Access to Document

10.1016/j.apsusc.2009.09.039

Cite this

Karamat, S., Rawat, R. S., Lee, P., Tan, T. L., Ramanujan, R. V., & Zhou, W. (2010). Structural, compositional and magnetic characterization of bulk V ₂ O ₅ doped ZnO system Applied Surface Science, 256(8), 2309-2314. https://doi.org/10.1016/j.apsusc.2009.09.039

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abstract = " This paper investigates the structural, compositional and magnetic properties of vanadium doped ZnO bulk samples prepared by solid state reaction technique. The Rietveld refinement analysis for XRD results of samples showed small change in lattice parameters for 3 and 5\% vanadium doped ZnO samples indicating the substitution of Zn 2+ ions by vanadium ions in ZnO lattice. Raman spectroscopy reveals the change in ZnO modes positions due to vanadium doping. The appearance of E 1 and E 2 modes showed that the wurtzite structure of ZnO is still maintained after doping of vanadium oxide. XPS analysis confirms the presence of the different elements and oxidation states of vanadium ions. M-H curves obtained from VSM showed weak ferromagnetism in the samples. The observation of ferromagnetic behavior indicates the formation of ZnVO phase with V 2+ ion substitution in the ZnO lattice. XPS scans of the etched bulk samples confirmed the 2+ oxidation state of vanadium ions in our samples explaining the origin of ferromagnetism.",

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Karamat, S, Rawat, RS, Lee, P, Tan, TL, Ramanujan, RV & Zhou, W 2010, ' Structural, compositional and magnetic characterization of bulk V ₂ O ₅ doped ZnO system ', Applied Surface Science, vol. 256, no. 8, pp. 2309-2314. https://doi.org/10.1016/j.apsusc.2009.09.039

Structural, compositional and magnetic characterization of bulk V ₂ O ₅ doped ZnO system . / Karamat, S.; Rawat, R. S.; Lee, P. et al.
In: Applied Surface Science, Vol. 256, No. 8, 01.02.2010, p. 2309-2314.

Research output: Contribution to journal › Article › peer-review

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AU - Ramanujan, R. V.

AU - Zhou, W.

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AB - This paper investigates the structural, compositional and magnetic properties of vanadium doped ZnO bulk samples prepared by solid state reaction technique. The Rietveld refinement analysis for XRD results of samples showed small change in lattice parameters for 3 and 5% vanadium doped ZnO samples indicating the substitution of Zn 2+ ions by vanadium ions in ZnO lattice. Raman spectroscopy reveals the change in ZnO modes positions due to vanadium doping. The appearance of E 1 and E 2 modes showed that the wurtzite structure of ZnO is still maintained after doping of vanadium oxide. XPS analysis confirms the presence of the different elements and oxidation states of vanadium ions. M-H curves obtained from VSM showed weak ferromagnetism in the samples. The observation of ferromagnetic behavior indicates the formation of ZnVO phase with V 2+ ion substitution in the ZnO lattice. XPS scans of the etched bulk samples confirmed the 2+ oxidation state of vanadium ions in our samples explaining the origin of ferromagnetism.

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Karamat S, Rawat RS, Lee P, Tan TL, Ramanujan RV, Zhou W. Structural, compositional and magnetic characterization of bulk V ₂ O ₅ doped ZnO system Applied Surface Science. 2010 Feb 1;256(8):2309-2314. doi: 10.1016/j.apsusc.2009.09.039