Title Bar

ram seshadri: teaching

Winter 2018: Materials 218

Time and Place: M W 2:00 pm to 3:15 pm, Materials Lecture Room.

Office hours: After class or by appointment.


Emily Schueller eschueller@mrl.ucsb.edu is the reader for the course. Please email her to set up appointments.

Course Outline

Suggested reference for the earlier parts of the class: Basics of Crystallography and Diffraction (4th Edn.), C. Hammond, Oxford IUCr (any edition).

International Tables for Crystallography Volume A: Space-group symmetry

Printable (PDF) periodic table from NIST with electronic configurations. Please keep a printout with you.

Plane group sketcher (requires Java): "escher"

Gorgeous wikipedia page on Wallpaper (2D) groups.

Interactive periodic table with effective ionic Shannon-Prewitt) radii, hosted locally.

The VESTA Crystal Structure drawing package (and more): Download and install from here. This program works on all platforms. It is required for assignments.

Database of some mineral crystal structures. The cif files that can be downloaded are directly read by VESTA.

A demo version of the principal database of Inorganic Crystal Structures is available at FIZ Inorganic Crystal Structure Database

CRC Handbook of Physics and Chemistry online (useful physical and chemical data including solid state properties). CRC Online

PDF file of bond valence parameters including the exponential bond valence relationship, and the source cif file: CIF from CCP14

Oxide Crystal Structures

Class schedule:

Date topic, files etc
W 1/17 Classification, glasses, quasicrystals, etc. | Handout
Papers (DOI): Colloids: Lekkerkerker, CRN: Zachariasen, RCP: Duwez, Quasicrystals: Mackay + Schecthman + Jannsen + Tsai
M 1/22 Symmetry and crystallography | Handout 2 | Handout 3 | Faujasite: faujasite.vesta + faujasite.png | IUCr-Symmetry | 2D Plane Groups
M 1/22 Assignment 1 (due 1/29/2018)
M 1/22 Coding assignment: (Teams of 2 students OK, due 2/5/2018): The Radial Distribution Function g(r) (wiki) can sometimes be obtained through appropriate Fourier transformation of experimental X-ray or neutron scattering, and is a powerful technique to compare the local structure of liquids or glasses with those of crystals. Write code in any language (Matlab, Mathematica, python) to calculate g(r) for a (a) finite system of 100×100 points on a square lattice with unit separation between points, and (b) for a random arrangement of 10,000 points generated within a square that is 100 unit lengths on edge.
W 1/24 Class by Joshua Bocarsly: More symmetry, glide lines and planes, rotoinversion, screw axes and 2D plane groups
Please print and bring to class: Space Groups 1 + Space Groups 2
M 1/29 Structures 1 | Stackings: PDF | Assignment 2 (due 2/5/2018)
W 1/31 Structures 1 (contd.) and Structures 2 + Handout 4
M 2/1 Finish Structures 2 and Structures 3 | Discussion on Bond Valence Sums (please see the Oxide Structures pdf | Assignment 3 (due 2/12/2018) | The assignment needs NbO.cif and CuO.cif
W 2/7 Perovskite tilting + Cohesion 1
M 2/13 No class
W 2/15 Midterm
W 2/21 Cohesion 1 (contd.) + Cohesion 2

For material from previous quarters, please look at:

Winter 2003: Materials/218/Chemistry 277
Spring 2003: Materials 286C
Fall 2003: Materials 225
Fall 2003: 100A
Winter 2004: Chemistry 173B
Winter 2004: Materials 218/Chemistry 277
Fall 2004: Materials100A
Winter 2005: Materials218/Chemistry 277
Spring 2005: Materials265
Fall 2005: Materials286G
Winter 2006: Materials 218/Chemistry 277
Spring 2006: Materials209BL
Winter 2007: Materials218/Chemistry 277
Spring 2007: Materials 265
Fall 2007: Materials 100A
Special stuff for 200B, 2008: Class on Soft Matter & Non-crystalline materials
Winter 2008: Materials 218/Chemistry 277
Spring 2008: Materials 286G
Fall 2008: Materials 265
Winter 2009: Materials 218/Chemistry 277
Spring 2009: Chemistry 2C
Winter 2010: Materials 218/Chemistry 277
Spring 2010: Materials 286G
Spring 2010: Ethics
Fall 2010: Materials 100A
Winter 2011: Materials 218/Chemistry 277
Spring 2011: Chemistry 279
Fall 2011: Materials 100A
Winter 2012: Materials 218/Chemistry 277
Spring 2012: Materials 286G
Winter 2013: Materials 218/Chemistry 277
Spring 2013: Chemistry 2C
Fall 2013: Materials 100A
Winter 2014: Materials 218
Spring 2014: Materials 286G
Fall 2014: Materials 286K
Winter 2015: Materials 218
Spring 2015: Chemistry 2C
Fall 2015: Materials 100A
Winter 2016: Materials 218
Spring 2016: Materials 286G
Winter 2017: Materials 218
Spring 2017: Chemistry 2C
Fall 2017: Materials 100A