MEMS1054_week4_6v1-crystaldiffraction1

MEMS1054_week4_6v1-crystaldiffraction1 - MEMS 1054...

Info icon This preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon
MEMS 1054 Materials Science 1 or Structure of Crystals and Diffraction Week 4-6 - Diffraction 1 Professor Jörg Wiezorek, PhD, Materials Science and Metallurgy, University of Cambridge, UK, 1994. Meets in room G37 BEH, Mon/Wed/Fri, 1-1:50PM Week 4-6
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
A) Crystal Structure Studies by X-ray Diffraction; What is Diffraction? What is a diffraction pattern? What are X- rays? How do we make X-rays? What does an emission spectrum from a typical X-ray tube look like? How do X-rays interact with atoms in crystals? Paradigms of Diffraction from Crystals B) Diffraction from Crystals: Geometry, The Bragg Law (Equation), Laue Conditions What is Diffraction? The Geometrically necessary condition for diffraction from a crystal lattice - The Bragg Law! ; Examine the Bragg equation and idealized diffraction patterns; X-ray diffraction patterns from Single Crystals, textured polycrystals, Powder (random texture); C) Diffracted Intensities: The Structure Factor D) The Reciprocal Lattice and the Laue Equation 0) Reciprocal Lattice / Reciprocal Space Lattice / Space Lattice
Image of page 2
Reciprocal Space Lattice; Reciprocal Lattice; Reciprocal Space; Phase Space; k-space Try the Uplink Here I present to you a useful hyperlink for the exploration of concepts related to basic ideas regarding X-rays, Reciprocal Space Lattices and their relation to diffraction from Crystals; have a look and work on the control questions – http://www.doitpoms.ac.uk/tlplib/reciprocal_lattice/index.php http://www.doitpoms.ac.uk/tlplib/reciprocal_lattice/index.php
Image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 4
Image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Reciprocal Space Lattice and Crystals and Diffraction from Crystals
Image of page 6
Diffraction in Reciprocal Space! Reciprocal Lattice of the Crystal and Diffraction - Ewald Sphere Construction; 1/ λ = R ES The REFLECTING SPHERE (elastic sphere, Ewald Sphere) and the LIMITING SPHERE; Limiting Sphere R LS = 2/ λ = 2 R ES
Image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Polarized Light Micrograph, close- packed Metal polycrystal (after Guy and Hren) Grains in a Polycrystalline Aggregate are individual Crystals of different orientations joined across their mutually shared grain boundaries;
Image of page 8
Image of page 9
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern