Room temperature ferromagnetism in Mn, Ni and Co ions doped Cu{sub 2}O nanorods

Journal Article · Wed Dec 15 00:00:00 EST 2010 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2010.09.040· OSTI ID:21494167

Ahmed, Asar ^[1]

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1. Department of Chemistry, SL-214, Southern Lab, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh (India)

Here we report the synthesis and characterization of Cu{sub 2}O nanorods doped with Mn, Ni and Co transition metal ions and the study of their magnetic properties. Synthesis of the nanorods was carried out by the modified polyol method. Powder X-ray diffraction patterns clearly showed them to be polycrystalline single phase material. They exhibited ferromagnetic behavior at room temperature, however no such behavior was observed for the reference undoped sample, which indicated that unintentionally introduced magnetic impurities were not responsible for the observed phenomenon. Ferromagnetic behavior was found to be dependent on the dopant concentration and increased consistently with its increment in the material. The total magnetic moments contribution was calculated for the dopant concentration and was found to be insignificant to account for the observed ferromagnetism, therefore it was suggested that ferromagnetism could have conjured up from the induced magnetic moment in the defects created as cation vacancies in the material. The presence of the defects was supported by the room temperature photoluminescence study which showed that intensity of the peaks was dependent on the dopant concentration and increased consistently with it. There was strong correlation between the magnitude of the photoluminescence peak and the observed ferromagnetic property in the doped samples. -- Graphical Abstract: Room temperature ferromagnetism was observed in the Cu{sub 2}O nanorods doped with Mn, Ni and Co ions. The origin seems to be the defects of cation vacancies created by the dopant ions. Display Omitted

• OSTI ID: 21494167
• Journal Information: Journal of Solid State Chemistry, Vol. 183, Issue 12; Other Information: DOI: 10.1016/j.jssc.2010.09.040; PII: S0022-4596(10)00439-1; Copyright (c) 2010 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
CATIONS
COBALT IONS
COPPER OXIDES
DOPED MATERIALS
FERROMAGNETISM
MAGNETIC MOMENTS
MAGNETIC PROPERTIES
MANGANESE IONS
NANOSTRUCTURES
NICKEL IONS
PHOTOLUMINESCENCE
POLYCRYSTALS
SEMICONDUCTOR MATERIALS
SYNTHESIS
TEMPERATURE RANGE 0273-0400 K
VACANCIES
X-RAY DIFFRACTION
CHALCOGENIDES
CHARGED PARTICLES
COHERENT SCATTERING
COPPER COMPOUNDS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
CRYSTALS
DIFFRACTION
EMISSION
IONS
LUMINESCENCE
MAGNETISM
MATERIALS
OXIDES
OXYGEN COMPOUNDS
PHOTON EMISSION
PHYSICAL PROPERTIES
POINT DEFECTS
SCATTERING
TEMPERATURE RANGE
TRANSITION ELEMENT COMPOUNDS