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Title. Key points. Periodic crystal. Aperiodic crystal. Aperiodic crystal – No 3-dimentional periodicity. Aperiodic crystal – No 3-dimentional periodicity – modulation vector. Example 1, Example 2. How to map the aperiodic modulation?. How to map the aperiodic modulation? (2).

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  1. Title

  2. Key points

  3. Periodic crystal

  4. Aperiodic crystal

  5. Aperiodic crystal – No 3-dimentional periodicity

  6. Aperiodic crystal – No 3-dimentional periodicity – modulation vector

  7. Example 1, Example 2

  8. How to map the aperiodic modulation?

  9. How to map the aperiodic modulation? (2)

  10. How to map the aperiodic modulation? (3)

  11. How to map the aperiodic modulation? (4)

  12. Symmetry operation in superspace

  13. Symmetry operation in superspace, Superspace groups

  14. Family of compaunds = single structure in superspace ?

  15. Hexagonal Ferrites

  16. Ferrites are ferromagnetic oxydes

  17. Ferrite Family Tree

  18. Ferrite Family Tree (2)

  19. Family Compozition

  20. Family Compozition (2)

  21. Family Compozition (3)

  22. Family Compozition, Spinel

  23. Familly compozition 2 - 1

  24. Family Compozition 2 - 2

  25. Family Compozition 2 - 3

  26. Family Compozition 2 - 4

  27. How to make them superspace-friendly? I. CP sequences

  28. How to make them superspace-friendly? II. Spinel slubs

  29. How to make them superspace-friendly? II. Spinel slubs (2)

  30. How to make them superspace-friendly? III. Building blocks - S

  31. How to make them superspace-friendly? III. Building blocks – S, R

  32. How to make them superspace-friendly? III. Building blocks – S, R, T

  33. Potential combinations – R + S

  34. Potential combinations – R + S > M

  35. Potential combinations – R + S + T > M >> Y

  36. Potential combinations (table)

  37. Potential combinations (table 2)

  38. ‘Y’ type ferrite

  39. ‘Y’ type ferrite (2)

  40. ‘Y’ type ferrite (3)

  41. ‘Y’ type ferrite (4)

  42. ‘Y’ type ferrite (TS)

  43. ‘Y’ type ferrite (TS) – Other ways to arrange the blocks?

  44. The structures entail ‘missing’ S blocks on a strictly periodic basis

  45. Composite Data for (TS)nT Structural Series

  46. Modulation vector choice

  47. Modulation vector choice, main ref ections

  48. Modulation vector choice, main ref ections, satellites

  49. Example of 4D indexing

  50. Superspace group requirements

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