International Tables for Crystallography (2019). Vol. H, ch. 7.13, pp. 868-884
https://doi.org/10.1107/97809553602060000987

Chapter 7.13. Powder diffraction of superconductors

Contents

  • 7.13. Powder diffraction of superconductors  (pp. 868-884) | html | pdf | chapter contents |
    • 7.13.1. Introduction  (pp. 868-870) | html | pdf |
      • 7.13.1.1. Properties of superconductors  (p. 868) | html | pdf |
      • 7.13.1.2. A brief description of superconducting systems  (pp. 868-870) | html | pdf |
    • 7.13.2. Advantages of structure analysis from powder diffraction  (pp. 870-872) | html | pdf |
      • 7.13.2.1. Comparison of XPD and NPD  (p. 871) | html | pdf |
      • 7.13.2.2. Choice of radiation  (p. 872) | html | pdf |
    • 7.13.3. Analysis of the chemical and structural features of nonstoichiometric superconductors  (pp. 872-878) | html | pdf |
      • 7.13.3.1. Charge transfer and valence-state manipulation  (pp. 872-875) | html | pdf |
      • 7.13.3.2. Modelling of layer structures  (pp. 875-876) | html | pdf |
      • 7.13.3.3. Structural transformations  (pp. 876-878) | html | pdf |
    • 7.13.4. Magnetic order in superconductors and parent compounds  (pp. 878-879) | html | pdf |
    • 7.13.5. Conclusions  (p. 879) | html | pdf |
    • Appendix 7.13.1. The study of long-range magnetic order in superconductors  (pp. 879-882) | html | pdf |
    • References | html | pdf |
    • Figures
      • Fig. 7.13.1. Definitions of superconductivity  (p. 868) | html | pdf |
      • Fig. 7.13.2. Typical structures for higher-Tc superconducting compounds shown in Table 7.13.1  (p. 870) | html | pdf |
      • Fig. 7.13.3. Definition of the vectors relevant in the evaluation of the magnetic structure factor  (p. 871) | html | pdf |
      • Fig. 7.13.4. Angular dependence of the atomic scattering amplitudes of iron for X-rays [fx(Fe)] and neutrons [b(Fe)], and of the magnetic form factors for Fe2+ [fM(Fe2+)] and Fe3+ [fM(Fe3+)]  (p. 871) | html | pdf |
      • Fig. 7.13.5. Schematic representation of the choice of radiation recommended for powder-diffraction experiments to obtain different structural information in research on superconductivity  (p. 872) | html | pdf |
      • Fig. 7.13.6. Schematic view of charge transfer between the conduction layer and the charge-reservoir layer in superconducting and related compounds  (p. 872) | html | pdf |
      • Fig. 7.13.7. Calculated atomic valence for Cu in the CuO2 plane layer versus oxygen content in the chain layer of YBa2Cu3O7−x  (p. 873) | html | pdf |
      • Fig. 7.13.8. Schematic layer-stacking structures of (a) (R1−xMx)2CuO4 and (b) HgBa2CuO4+x indicating the charge transfer between the reservoir and superconducting layers  (p. 873) | html | pdf |
      • Fig. 7.13.9. (a) Schematic view of electron transfer in Fe-based superconducting and related compounds  (p. 874) | html | pdf |
      • Fig. 7.13.10. Layers in copper-oxide high-Tc superconductors  (p. 875) | html | pdf |
      • Fig. 7.13.11. Structure stacking along the c axis for the HgBa2Can−1CunO2(n+2)+x series of superconductors  (p. 876) | html | pdf |
      • Fig. 7.13.12. Schematic plot of the possible diffraction peaks with consideration of the primitive lattice only  (p. 877) | html | pdf |
      • Fig. 7.13.13. A structural transformation induced by a rotation of the octahedra in the perovskite structure  (p. 877) | html | pdf |
      • Fig. 7.13.14. Structural transformation from tetragonal P4/mmm symmetry to orthorhombic Pmmm symmetry due to oxygen vacancy ordering in the CuO1−x charge-reservoir layer  (p. 878) | html | pdf |
      • Fig. 7.13.15. Possible vacancy-ordering arrangements in the Fe plane for AxFe2−ySe2  (p. 878) | html | pdf |
      • Fig. 7.13.16. Representation of selected commensurate ferromagnetic and antiferromagnetic ordering schemes  (p. 879) | html | pdf |
      • Fig. 7.13.17. Types of magnetic lattices  (p. 880) | html | pdf |
      • Fig. 7.13.18. Selected magnetic symmetry and antisymmetry elements that Dannay et al  (p. 881) | html | pdf |
      • Fig. 7.13.19. Observed (crosses) and calculated (solid line) intensities of neutron powder diffraction intensity data for the superconductor NaFeAs at 5 K  (p. 882) | html | pdf |
    • Tables
      • Table 7.13.1. Selected superconducting elements, alloys, intermetallics, copper oxides, iron-based compounds and others  (p. 869) | html | pdf |
      • Table 7.13.2. Selected layered copper-oxide superconductors  (p. 875) | html | pdf |
      • Table 7.13.3. Crystal systems, conventional coordinate systems and the 36 magnetic lattices in three dimensions  (p. 880) | html | pdf |
      • Table 7.13.4. Integral reflection conditions of centred magnetic lattices corresponding to Fig. 7.13.17  (p. 882) | html | pdf |