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Studies from University of Saarland Yield New Data on Applied Crystallography (Magnetic field dependent small-angle neutron scattering on a Co...

July 4, 2014



Studies from University of Saarland Yield New Data on Applied Crystallography (Magnetic field dependent small-angle neutron scattering on a Co nanorod array: evidence for intraparticle spin misalignment)

By a News Reporter-Staff News Editor at Science Letter -- A new study on Applied Crystallography is now available. According to news reporting originating in Saarbrucken, Germany, by NewsRx journalists, research stated, "The structural and magnetic properties of a cobalt nanorod array have been studied by means of magnetic field dependent small-angle neutron scattering (SANS). Measurement of the unpolarized SANS cross section d Sigma/d Omega of the saturated sample in the two scattering geometries where the applied magnetic field H is either perpendicular or parallel to the wavevector k(i) of the incoming neutron beam allows one to separate nuclear from magnetic SANS, without employing the usual sector-averaging procedure."

The news reporters obtained a quote from the research from the University of Saarland, "The analysis of the SANS data in the saturated state provides structural parameters (rod radius and centre-to-centre distance) that are in good agreement with results from electron microscopy. Between saturation and the coercive field, a strong field dependence of d Sigma/d Omega is observed (in both geometries), which cannot be explained using the conventional expression of the magnetic SANS cross section of magnetic nanoparticles in a homogeneous nonmagnetic matrix."

According to the news reporters, the research concluded: "The origin of the strong field dependence of d Sigma/d Omega is believed to be related to intradomain spin misalignment, due to magnetocrystalline and magnetoelastic anisotropies and magnetostatic stray fields."

For more information on this research see: Magnetic field dependent small-angle neutron scattering on a Co nanorod array: evidence for intraparticle spin misalignment. Journal of Applied Crystallography, 2014;47():992-998. Journal of Applied Crystallography can be contacted at: Wiley-Blackwell, 111 River St, Hoboken 07030-5774, NJ, USA. (Wiley-Blackwell - www.wiley.com/; Journal of Applied Crystallography - onlinelibrary.wiley.com/journal/10.1111/(ISSN)1600-5767)

Our news correspondents report that additional information may be obtained by contacting A. Gunther, University of Saarland, D-66041 Saarbrucken, Germany. Additional authors for this research include J.P. Bick, P. Szary, D. Honecker, C.D. Dewhurst, U. Keiderling, A.V. Feoktystov, A. Tschope, R. Birringer and A. Michels (see also Applied Crystallography).

Keywords for this news article include: Europe, Germany, Saarbrucken, Applied Crystallography

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


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Source: Science Letter


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