Neutron Scattering from Magnetic Materials part 14 pot

... . . . 413 3.3.Polarization 415 3.4.Selectinganeutronpolarizationstate 417 3.5.Changinganeutron’spolarization 417 NEUTRON SCATTERING FROM MAGNETIC MATERIALS Edited by Tapan Chatterji Published ... gov- ern spin-dependent neutron reflection from magnetic materials, we can use what we have learned thus far about reflection from nonmagnetic media and the spin-dependent neutron...

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... spectrometer. The neutron coherent inelastic scattering tech- nique was used to study the temperature dependence of the magnetic excitations in iron from room temperature to well above the ferromagnetic ... high- quality 400 g 60 Ni single crystal which gave scattering intensities free from incoherent scattering and highly reduced inelastic scattering from phonons. The exper...

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... different aspects of neutron scattering from magnetic mate- rials. I intentionally chose the title Neutron Scattering from Magnetic Materials rather than Magnetic Neutron Scattering to emphasize ... mainly consider magnetic neutron scattering. However, neutron scattering intensity from magnetic materials is a superposition of both types of scattering. In or...

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... Neutron Scattering, Cambridge University Press (1978). [13] S. Lovesey, Theory of Neutron Scattering from Condensed Matter, vol. 1, Oxford Science Publications (1987). [14] S. Lovesey, Theory of Neutron ... of the magnetic moments. 5.1.1. Spin–slip magnetic structures of holmium. The magnetic structure of Ho has been investigated both by neutron and by more recently develo...

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... 133 5.Application 135 5.1. First example,  k =0 135 5.2. Second example,  k =0 146 References 150 NEUTRON SCATTERING FROM MAGNETIC MATERIALS Edited by Tapan Chatterji © 2006 Elsevier B.V. All rights reserved 93 88 ... directions of the magnetic scatterings with respect to the incident neutron beam, the magnetic periodicity (defined by wave vectors  k in the reciprocal spa...

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... iron. At the opposite end, magnetic scattering in the paramagnetic β and γ phases of solid oxygen [46–48] give examples of antiferromagnetic correlations. Figure 26 represents the magnetic pattern obtained, ... possible to extract the magnetic scattering from differences between measurements (both spin-flip or both non-spin-flip) with polariza- tion vertical and with polarization al...

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... J.B. Forsyth and F. Tasset, Proc. Roy. Soc. London Ser. A 442 147 (1993). [10] P.J. Brown, in: Neutron Scattering from Magnetic Materials, ed. T. Chatterji, Chap. 5, Elsevier (2005), this volume. [11] ... Bragg reflections from magnetic structures with zero propagation vector can contain both nuclear and magnetic scattering. They give the interference terms in the polarised n...

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... (27) Here the neutron scattering cross-section has been broken into two parts: (1) the part mul- tiplied by (1 −Q 2 z ) is the longitudinal part of the cross-section, while the term multiplied Magnetic ... (P xy , P xz ) of opposite signs coming from 180 ◦ domains. This means that the J ni terms in (14) must be nonzero showing that the magnetic scattering is Magnetic excitat...

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... of the vector at which the diffuse magnetic scattering is centered (from Chattopadhyay et al. [19]). (a) (b) Fig. 8. (a) Diffuse magnetic neutron scattering from MnS 2 in constant-Q scans at several ... covered only a part of the huge field of magnetic excitations investigated by inelastic neutron scattering during the past half a century. The research on magnetic ex- 35...

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... atoms, ˇ V M = 2π ¯ h 2 m  Np z Np x −iNp y Np x +iNp y −Np z  , (60) where the magnitude of the magnetic scattering length p is associated with a given atomic magnetic moment. The magnetic scattering length p arises from the atom’s unpaired elec- trons ... reflectivity measurements of magnetic films and multilay- ers. Here we will present a derivation of the dynamical theory fo...

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