Detection of spin coupling in iron nanoparticles with small angle neutron scattering

Ijiri, Y.; Kelly, C. V.; Borchers, J. A.; Rhyne, J. J.; Farrell, D. F.; Majetich, S. A.
June 2005
Applied Physics Letters;6/13/2005, Vol. 86 Issue 24, p243102
Academic Journal
Aggregates of monodisperse iron-based nanoparticles were investigated by small-angle neutron scattering. The field dependence of the scattering intensity showed marked differences for particles depending on size and degree of oxidation. The angular dependence of the intensity indicated magnetic regions within an oxidized sample with spins perpendicular to the applied field, which dominated the scattering at the diffraction peak. The unexpected results are interpreted in terms of an iron core that is exchange coupled to an iron oxide shell.


Related Articles

  • Relativistic corrections to small-angle scattering of spin-1 nuclei. Tartakovsky, V. K. // Physics of Atomic Nuclei;Apr2008, Vol. 71 Issue 4, p724 

    The differential cross section for the elastic small-angle scattering of nonidentical spin-1 nuclei at intermediate and low energies is obtained in a general form on the basis of the QED formalism. Deviations from Rutherford scattering and a complicated dependence of this cross section on the...

  • Analysis of scattering characteristics of local biosensors. Grishina, N.; Eremin, Yu.; Sveshnikov, A. // Optics & Spectroscopy;Mar2007, Vol. 102 Issue 3, p461 

    The scattering characteristics of local biosensors (layered nanoparticles) in the field of evanescent waves are analyzed using the method of discrete sources. A local biosensor that can shift the spectral maximum to the IR region is synthesized. The effect of various parameters on the position...

  • CONFINEMENT EFFECTS ON SCATTERING FOR A NANOPARTICLE. Melgaard, M. // Acta Physica Polonica B;2007, Vol. 38 Issue 1, p197 

    The motion of a nanoparticle in a narrow, bend channel is used to illustrate features of scattering in systems with semi-open geometries. Under certain general constraints on the geometry, results on the scattering process are established.

  • Precision Measurements of αs at HERA. Glasman, Claudia; Smith, W. H.; Dasu, S. R. // AIP Conference Proceedings;2005, Vol. 792 Issue 1, p689 

    The precision measurements of the strong coupling constant, αs, and its energy-scale dependence carried out at HERA by the H1 and ZEUS Collaborations are reviewed. An average value of αs(MZ) = 0.1186 ± 0.0011 (exp.) ± 0.0050 (th.) is obtained from these measurements. The combined...

  • Kirkwood-Buff integrals of aqueous alcohol binary mixtures. Perera, A.; Sokolić, F.; Almásy, L.; Koga, Y. // Journal of Chemical Physics;3/28/2006, Vol. 124 Issue 12, p124515 

    The Kirkwood-Buff integrals of some binary aqueous alcohol mixtures are computed from the available vapor pressure measurements and compared with previous results as well as small angle neutron scattering experiments. The emphasis of the present report is on accuracy of the results that can be...

  • Interparticle Interference of Neutrons in Multiple Small-Angle Scattering by a Close-Packed Polydisperse System. Abov, Yu.G.; Dzheparov, F.S.; Elyutin, N.O.; L'vov, D.V.; Smirnov, Yu.I.; Tyulyusov, A.N. // JETP Letters;11/10/2003, Vol. 78 Issue 9, p523 

    Small-angle multiple neutron scattering by a disordered polydisperse system with various concentrations of scattering centers is studied experimentally and theoretically. The experiments show that, for high concentrations (specific volume of scatterers ≥30%), interparticle interference of...

  • Investigation of self-assembled fractal porous-silica over a wide range of length scales using a combined small-angle scattering method. Yamaguchi, D.; Mayama, H.; Koizumi, S.; Tsujii, K.; Hashimoto, T. // European Physical Journal B -- Condensed Matter;May2008, Vol. 63 Issue 2, p153 

    The unique structure of a set of self-assembled porous silica materials was characterized through a combined small-angle scattering (CSAS) method using small- and ultra-small angle neutron scattering as well as small-angle X-ray scattering. The porous silica specimens investigated were prepared...

  • Investigation of the evolution of the hydrated zirconia mesostructure at different stages of heat treatment. Ivanov, V. K.; Kopitsa, G. P.; Grigoriev, S. V.; Polezhaeva, O. S.; Garamus, V. M. // Physics of the Solid State;May2010, Vol. 52 Issue 5, p957 

    The mesostructure of amorphous xerogels based on hydrated zirconia ZrO2 and its evolution at different stages of heat treatment have been investigated using the small-angle neutron scattering method. A correlation function of the nuclear scattering amplitude density has been obtained from...

  • Optical Spectra and Color of Silver Colloids. Dmitruk, N. L.; Malynych, S. Z.; Moroz, I. E. // Journal of Nano- & Electronic Physics;2013, Vol. 5 Issue 3, p03031-1 

    In present work, the color features of the aqueous silver suspensions were investigated. Color systems CIE XYZ and CIELAB are considered. In the case of low concentrations of nanoparticles chromaticity coordinates were determined from the transmission spectra of the colloids. For high...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics