27-201/211 Structure of Materials
Class 23
The Free Electron Theory of Solids
1
Announcements
Final Exam Due Date: Thursday, December 17, 11:30 AM
Lab 04 Due Date: Sunday, December 20, 2015, 11:59 PM
Office Hours as usual Thursday and Friday afternoon
Not
27-201/211 Structure of Materials
Class 20
Examples with Space Groups
1
Announcements
We need to have Lab 04, arrangements finalized, look for e-mail
instructions today or tomorrow
Homework 09 = Final Exam, will consist of:
Problems from todays class, SG
27-201/211 Structure of Materials
Class 17
Point Groups III
1
Announcements
Homework 7 due this afternoon
Lab 03 due Friday: If there are questions, let me know. One
question to address in your discussion could be how would you
verify the material is actu
27-201/211 Structure of Materials
Class 14
The Fundamental Symmetry Operations
1
Announcements
Midterm exam grades
Lab 03 planning
2
Outline / Objectives
Define symmetry, symmetry operation
Definition of a symmetry operation (as a coordinate transformatio
27-201/211 Structure of Materials
Class 16
Combinations of Symmetry Operations The Point Groups II
1
Announcements
Lab 03 Scheduling up
2
Review
Defined the fundamental symmetry operations
1.
Translations
2.
Rotations (only 1,2,3,4,6-folds possible)
3.
Re
27-201/211 Structure of Materials
Class 15
Combinations of Symmetry Operations The Point Groups
1
Announcements
Lab 03 notes
Due Monday November 16, 4:30 PM
Some updated notes on BB
Samples available
Note Cr and Fe form changes, only need to do one
Homewo
27-201/211 Structure of Materials
Class 21
Metallic Structures: Classifications & Properties
1
Announcements
Lab 04 info posted on Blackboard, groups assigned
Final Exam info posted on Blackboard
No exam during the scheduled finals period. No additional h
27-201/211 Structure of Materials
Class 19
Combinations of Symmetry Elements with Translations
Brief Introduction to Space Groups
1
Announcements
Homework #09 due Friday, 4:30 PM
Paper copy
OR
Electronic (e-mail to webler@cmu.edu)
OR
Hybrid
Lab #04 due Th
27-201/211 Structure of Materials
Class 1
Introduction, Administrivia, Crystal Systems, Bravais Lattices, Unit Cells
1
Objectives
Two parts to todays class:
- Administrative Part 1) Introduce myself and MSE
2) Learning MSE @ CMU
3) Course intro
1) Impleme
27-201/211 Structure of Materials
Class 18
Special and General Positions in Point Groups
1
Announcements
Homework #8 due Friday, November 20, 4:30 PM
No class Tuesday, November 17
2
Review
Point symmetry arrangements around a point
Sketch derivation and e
27-201/211 Structure of Materials
Class 13
Specialized Diffraction Topics Real peaks, Peak broadening, thin films
1
Review
Spent this first half of the class defining and characterizing crystal
structures
Last time we defined the structure factor by first
27-201/211 Structure of Materials
Class 06
Diffracted Intensity Calculations
Additional Examples Structure factors with multi-atom motifs, non-cubic
patterns, real diffraction peaks
1
Review
Powder diffraction equal numbers of crystallites oriented for di
27-201/211 Structure of Materials
Class 2
Crystallographic Directions & Planes
1
Announcements
1. Academic Development
2. Lab 01 Friday, September 4th
Meet at the fountain in front of the Carnegie Museum of Natural History at
2:15 PM, the museum is at the
27-201/211 Structure of Materials
Class 22
Ceramic Structures: Classifications & Properties
1
Announcements
Office hours today
Office hours in lab tomorrow, I may be a late due to PhD qualifier
Lab 04 projects assigned
SAC Holiday Party
2
Review
Defined t
27-201/211 Structure of Materials
Class 08
Distance & angle calculations
1
Announcements
XRD intensity calcs, T factor use 280 K
Sign the x-ray logbook near the Rigaku
2
Review
SOM Chapter 4
3
Outline / Objectives
Calculate the metric tensor for any cryst
27-201/211 Structure of Materials
Class 03
Introduction to CrystalMaker
1
Review
Defined crystal structure = lattice + basis
Use symmetry to distinguish between the crystal systems
Explored application of centering to form lattices (nets in 2D)
Define
27-201/211 Structure of Materials
Class 05
Powder Diffraction
Indexing XRD Patterns
The Structure Factor
1
Announcements
Lab 2 samples available
Homework 3 posted, due Sept. 25
No Friday session get your pictures taken!
Office hours today
Working in lab g
27-201/211 Structure of Materials
Class 07
Basis vectors, the metric tensor, distance & angle calculations
1
Announcements
Slight tweak to schedule of classes on Blackboard
Homework 03 due this Friday, September 25, at 4:30 PM
Office hours today 3-5 PM (W
27-201/211 Structure of Materials
Class 11
Lab Reports and Writing
1
Announcements
Homework 05 due Friday, 4:30 PM
Usual office hours this week, though I need to leave 4:45 PM
Thursday, so come a little early if necessary
2
The Monoclinc Metric Tensor
3
T
27-201/211 Structure of Materials
Class 09
The Reciprocal Lattice
1
Announcements
Lab 02 due Friday, 4:30 PM
HW 4 due Friday at 4:30 PM
2
Review
Weve been working with lattices in terms of physical distances
Basis vectors have magnitude [length] and are t
27-201/211 Structure of Materials
Class 10
The Reciprocal Lattice and Diffraction
1
Announcements
Homework 05 posted, due Friday
Dont panic!
2
Review
1
1
1
cos
The Reciprocal Space Basis, way of representing the
periodicity of cfw_hkl planes
27-201/211 Structure of Materials
Class 12
Scattering & the Structure Factor
1
Announcements
Homework 06 posted, due Friday, October 16
No usual office hours (Thursday/Friday)
Lab 03 posted two submissions
- Planning notebook due October 30
- Final Notebo