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Studies from Dr. Babasaheb Ambedkar Marathwada University Update Current Data on Nanoparticles (Superparamagnetic Behavior of Zinc-Substituted Nickel...

September 2, 2014



Studies from Dr. Babasaheb Ambedkar Marathwada University Update Current Data on Nanoparticles (Superparamagnetic Behavior of Zinc-Substituted Nickel Ferrite Nanoparticles and its Effect on Mossbauer and Magnetic Parameters)

By a News Reporter-Staff News Editor at Physics Week -- Investigators publish new report on Nanoparticles. According to news reporting originating in Maharashtra, India, by VerticalNews journalists, research stated, "Zinc-substituted nickel ferrite (Ni (1-x) Zn (x) Fe (2) O (4) with x = 0.0, 0.2, 0.4, 0.6, 0.8, and 1.0) nanoparticles were synthesized by solgel auto-combustion technique at low temperature and characterized by using X-ray diffraction, scanning electron microscopy, pulse field hysteresis loop technique, and Mossbauer spectroscopy. X-ray diffraction studies confirmed the formation of single-phase spinel structure of the prepared ferrite samples with average crystallite size of 30 nm, very close to that of the critical size for nanoparticles exhibiting superparamagnetism."

The news reporters obtained a quote from the research from Dr. Babasaheb Ambedkar Marathwada University, "Scanning electron micrographs of the ferrite samples showed uniform spherical morphology of nanograins with homogenous microstructure. Further investigations on magnetic properties by pulse field hysteresis loop technique and Mossbauer spectroscopy indicated the presence of superparamagnetic phases in the ferrite samples attributed to occupation of octahedral [B] sites by zinc ions in these Ni-Zn samples and also to the nanometer sizes of the ferrite particles. Magnetic behavior of the Ni-Zn ferrite system is in agreement, initially, with Neel's two-sublattice collinear model and then with the Yafet-Kittel model for samples with higher zinc content (x a parts per thousand yen 0.4). Value of hyperfine splitting is found to decrease with increase in zinc content and is attributed to the reduction in particle size giving rise to superparamagnetism."

According to the news reporters, the research concluded: "Other Mossbauer parameters like quadrupole splitting and the isomer shift are within the reported range for those of ferrites with spinel structure."

For more information on this research see: Superparamagnetic Behavior of Zinc-Substituted Nickel Ferrite Nanoparticles and its Effect on Mossbauer and Magnetic Parameters. Journal of Superconductivity and Novel Magnetism, 2014;27(8):1889-1897. Journal of Superconductivity and Novel Magnetism can be contacted at: Springer, 233 Spring St, New York, NY 10013, USA. (Springer - www.springer.com; Journal of Superconductivity and Novel Magnetism - www.springerlink.com/content/1557-1939/)

Our news correspondents report that additional information may be obtained by contacting D.V. Kurmude, Dr Babasaheb Ambedkar Marathwada Univ, Dept. of Phys, Aurangabad 431004, Maharashtra, India. Additional authors for this research include C.M. Kale, P.S. Aghav, D.R. Shengule and K.M. Jadhav.

Keywords for this news article include: Asia, India, Nickel, Physics, Maharashtra, Nanotechnology, Superparamagnetism, Transition Elements, Emerging Technologies

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Physics Week


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