Structural, optical and magnetic behaviour of nanocrystalline Volborthite

Journal Article · Fri May 06 00:00:00 EDT 2016 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4946387· OSTI ID:22606448

Kumar, Sudhish ^[1]; Kalal, Sangeeta; Punjabi, P. B. ^[2]; Choudhary, B. L.; Dolia, S. N. ^[3]

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1. Department of Physics, M. L. Sukhadia University, Udaipur-313002 (India)
2. Department of Chemistry, M. L. Sukhadia University, Udaipur-313002 (India)
3. Department of Physics, University of Rajasthan, Jaipur 302 004 (India)

Nanocrystalline sample of Volborthite (Copper Pyrovanadate: Cu{sub 3}V{sub 2} (OH){sub 2}O{sub 7}.2H{sub 2}O) has been synthesized using wet chemical route and characterized by XRD, SEM, FTIR, UV-Vis-NIR spectroscopic and magnetization measurements. Room temperature X-ray diffraction analysis confirms the single phase monoclinic structure and nanocrystalline nature of Volborthite. The UV-Visible optical absorption spectrum displays two broad absorption peaks in the range of 200-350 nm and 400-1000 nm. The direct band gap is found to be E{sub g}= ∼2.74 eV. Bulk Volborthite was reported to be a natural frustrated antiferromagnet, however our nanocrystalline Volborthite display week ferromagnetic hysteresis loop with very small coercivity and retentivity at room temperature.

• OSTI ID: 22606448
• Journal Information: AIP Conference Proceedings, Vol. 1728, Issue 1; Conference: ICC 2015: International conference on condensed matter and applied physics, Bikaner (India), 30-31 Oct 2015; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
ABSORPTION
ABSORPTION SPECTRA
COERCIVE FORCE
COPPER COMPOUNDS
CRYSTALS
FOURIER TRANSFORMATION
HYSTERESIS
INFRARED SPECTRA
MAGNETIZATION
MONOCLINIC LATTICES
NANOSTRUCTURES
SCANNING ELECTRON MICROSCOPY
TEMPERATURE RANGE 0273-0400 K
VANADATES
X RADIATION
X-RAY DIFFRACTION