Neutron Scattering from Magnetic Materials part 4 pdf

... 127 3.2.Analysiswithtimeinversion 130 4. Practicalworkingscheme 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 ... 2 34 (1985). [28] J. Bohr, D. Gibbs, D.E. Moncton and K.L. D’Amico, Physica A 140 349 (1986). [29] D. Gibbs, J. Less-Common Met. 148 109 (1989). [30] R.A. Cowley a...

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... 3 2.Basicpropertiesoftheneutron 3 3.Neutronsource 5 4. Neutronscattering 5 4. 1.Definitionsofscatteringcross-section 6 4. 2.Themasterequation 7 5.Nuclearneutronscattering 9 5.1.Neutronscatteringfromasinglenucleus ... different aspects of neutron scattering from magnetic mate- rials. I intentionally chose the title Neutron Scattering from Magnetic Materials rather than Magnet...

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... electron configuration 4f n Ion 4f n SL J Ground-state g term La 3+ 4f 0 00 0 1 S − Ce 3+ ,Pr 4+ 4f 1 1 2 3 5 2 2 F 5 2 6 7 Pr 3+ 4f 2 15 4 3 H 4 4 5 Nd 3+ 4f 3 3 2 6 9 2 4 I 9 2 8 11 Pm 3+ 4f 4 26 4 5 I 4 3 5 Sm 3+ 4f 5 5 2 5 5 2 6 H 5 2 2 7 Eu 3+ ,Sm 2+ 4f 6 33 ... 4 5 I 4 3 5 Sm 3+ 4f 5 5 2 5 5 2 6 H 5 2 2 7 Eu 3+ ,Sm 2+ 4f 6 33 0 7 F 0 0 Gd 3+ ,Eu 2+ 4f 7 7 2 0 7 2 8 S 7...

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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, ... Schweizer Fig. 25. The paramagnetic scattering observed along the direction [h, h, 0] of a Fe 5 at.% Si single crystal [45 ]. Fig. 26. The paramagnetic scattering of γ oxyge...

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... Brown, J.B. Forsyth and F. Tasset, Proc. Roy. Soc. London Ser. A 44 2 147 (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 pola...

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... scattering, allowing the magnitude of magnetic moments to be established from SNP alone without recourse to supplementary integrated intensity measurements. 4. 4.1. The magnetic structure of U 14 Au 51 . The intermetallic ... S z (0), therefore the longitudinal part leads to elastic scattering and does not concern us here. So the transverse neutron scattering cross-section...

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... intensity contours along [100] from Fe (from Paul et al. [44 ]). Fig. 28. Experimental scattered intensity contours along [111] from Fe (from Paul et al. [44 ]). Magnetic excitations 285 Fig. 19. ... along [100] (Blackman et al. [42 ]). Fig. 25. Contours of the scattered neutron intensities from magnetic excitations in Fe for q along [100] (from Blackman et al. [42 ]). Magneti...

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... determined by neutron scattering (see Collins [1] for references of original papers) Exponent Exact solution Rb 2 CoF 4 Rb 2 CoF 4 Rb 2 CoF 4 K 2 CoF 4 K 2 CoF 4 ν 1.00 0.89(10) 0.99 (4) – 0.97 (4) 1.02(5) ν  1.00 ... 0.6312(3) – 0.669(7) 0.707(3) 1 χ –1.875 2 .48 1(1) – 2 .48 4(9) 2 .48 2(5) 2.5 α – 0 0.106 – −0.01 −0.121 −1 β 0.5 0.125 0.326 – 0. 345 0.367 0.5 δ 3 1 54. 78 1...

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... . . . . . 43 8 4. 3.Coordinatesystemtransformation 43 9 4. 4.Selectionrules“ofthumb” 44 2 4. 5.Three-dimensionalpolarizationanalysis 44 4 4. 6.Elementaryspin-dependentreflectivityexamples 44 5 5. Experimental ... . . . . . . . . . . . . . 41 3 3.3.Polarization 41 5 3 .4. Selectinganeutronpolarizationstate 41 7 3.5.Changinganeutron’spolarization 41 7 NEUTRON SCATTERING FROM...

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... for certain SLD profiles with magnetic barriers [43 ,44 ]. 4. 6. Elementary spin-dependent reflectivity examples Table 4 lists values of neutron nuclear and magnetic scattering length densities for ... by     t + t − iQ 2 t + iQ 2 t −     = 1  l=N    A 11 A 12 A 13 A 14 A 21 A 22 A 23 A 24 A 31 A 32 A 33 A 34 A 41 A 42 A 43 A 44    l     I + +r + I −...

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