Neutron scattering studies of nanomagnetism and artificially structured materials

Fitzsimmons, M. R.; Bader, S. D.; Borchers, J. A.; Felcher, G. P.; Furdyna, J. K.; Hoffmann, A.; Kortright, Jeffrey B.; Schuller, Iván K.; Schulthess, T. C.; Sinha, Sunil K.; Toney, Michael F.; Weller, D.; Wolf, Stuart A.

doi:10.1016/j.jmmm.2003.09.046

Cited by 157 publications

(41 citation statements)

References 310 publications

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“…[4][5][6][7] The measurable quantity in a magnetic SANS experiment-the (energyintegrated) macroscopic differential scattering cross section d /d -depends on the Fourier coefficients of M(r). These Fourier coefficients M(q) depend in a complicated manner on the magnetic interactions, the underlying microstructure (e.g., particle-size distribution and crystallographic texture), and on the applied magnetic field.…”

Section: And References Therein)mentioning

confidence: 99%

Analysis of magnetic neutron-scattering data of two-phase ferromagnets

Honecker

Dewhurst

Suzuki³

et al. 2013

Phys. Rev. B

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We have analyzed magnetic-field-dependent small-angle neutron scattering (SANS) data of soft magnetic two-phase nanocomposite ferromagnets in terms of a recent micromagnetic theory for the magnetic SANS cross section [D. Honecker and A. Michels, Phys. Rev. B $\mathbf{87}$, 224426 (2013)]. The approach yields a value for the average exchange-stiffness constant and provides the Fourier coefficients of the magnetic anisotropy field and magnetostatic field, which is related to jumps of the magnetization at internal interfaces

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Section: And References Therein)mentioning

confidence: 99%

Analysis of magnetic neutron-scattering data of two-phase ferromagnets

Honecker

Dewhurst

Suzuki³

et al. 2013

Phys. Rev. B

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“…Instrum. 75, 2955(2004 Adsorption from alkane+perfluoroalkane mixtures at fluorophobic and fluorophilic surfaces. I.…”

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confidence: 99%

When beauty is only skin deep; optimizing the sensitivity of specular neutron reflectivity for probing structure beneath the surface of thin films

Majkrzak

Carpenter

Heinrich

et al. 2011

Journal of Applied Physics

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Electrochemical cell for neutron reflectometry studies of the structure of ionic liquids at electrified interface Rev. Sci. Instrum. 81, 074101 (2010) Surface force confinement cell for neutron reflectometry studies of complex fluids under nanoconfinement Rev. Sci. Instrum. 79, 103908 (2008) Millisecond time resolution neutron reflection from a nematic liquid crystal Rev. Sci. Instrum. 75, 2955(2004 Adsorption from alkane+perfluoroalkane mixtures at fluorophobic and fluorophilic surfaces. I. Nature of the noncritical adsorption profiles J. Chem. Phys. 119, 11917 (2003) Local membrane ordering of sponge phases at a solid-solution interface J. Chem. Phys. 116, 8533 (2002) Additional information on J. Appl. Phys. Specular neutron reflectometry has become an established probe of the nanometer scale structure of materials in thin film and multilayered form. It has contributed especially to our understanding of soft condensed matter of interest in polymer science, organic chemistry, and biology and of magnetic hard condensed matter systems. In this paper we examine a number of key factors which have emerged that can limit the sensitivity of neutron reflection as such a probe. Among these is loss of phase information, and we discuss how knowledge about material surrounding a film of interest can be applied to help resolve the problem. In this context we also consider what role the quantum phenomenon of interaction-free measurement might play in enhancing the statistical efficiency for obtaining reflectivity or transmission data.

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“…The next major achievement of Polarized Neutron Reflectometry (PNR) was the prediction of spin-flip reflectivity by Ignatovich (1978) [3] and the pioneering experiments on magnetic surfaces by Felcher (1981) [4]. While specular PNR is widely recognized as a powerful tool for the investigation of magnetization profiles in magnetic heterostructures [5], the description of off-specular scattering from magnetic domains is still under development [8]. In spite of these important developments there is still a confusion concerning the quantum states of neutrons in a magnetic sample.…”

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confidence: 99%

Quantum states of neutrons in magnetic thin films

Radu

Leiner²,

Wolff³

et al. 2005

Phys. Rev. B

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We have studied experimentally and theoretically the interaction of polarized neutrons with magnetic thin films and magnetic multilayers. In particular, we have analyzed the behavior of the critical edges for total external reflection in both cases. For a single film we have observed experimentally and theoretically a simple behavior: the critical edges remain fixed and the intensity varies according to the angle between the polarization axis and the magnetization vector inside the film. For the multilayer case we find that the critical edges for spin up and spin down polarized neutrons move towards each other as a function of the angle between the magnetization vectors in adjacent ferromagnetic films. Although the results for multilayers and single thick layers appear to be different, in fact the same spinor method explains both results. An interpretation of the critical edges behavior for the multilyers as a superposition of ferromagnetic and antifferomagnetic states is given.

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Neutron scattering studies of nanomagnetism and artificially structured materials

Cited by 157 publications

References 310 publications

Analysis of magnetic neutron-scattering data of two-phase ferromagnets

Analysis of magnetic neutron-scattering data of two-phase ferromagnets

When beauty is only skin deep; optimizing the sensitivity of specular neutron reflectivity for probing structure beneath the surface of thin films

Quantum states of neutrons in magnetic thin films

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