CET773 Variation and Nonstoichiometry

Course Provider

School of Materials Science and Engineering (MSE)



Academic Unit



The ability to design, manipulate and validate the crystal chemistry of materials is fundamental to materials science. This course will provide students with the strategies and tools to rationally tailor functional materials. Formal descriptions of plane and space symmetry will be introduced and the imposition of chemistry on these mathematical precepts explained. The compilation of key crystal structure families and the derivation of complex structures from simple prototypes will systematize the most common materials encountered. Responses of crystals to pressure, temperature and chemical composition are explored. Mechanisms for introducing nonstoichiometry are classified and common extended defect described. The role of nonstoichiometry in controlling functional materials properties will be illustrated for galvanic cells, sensors, catalysts and environmental remediation.

This course is part of:

- Graduate Certificate in Materials Characterization
- FlexiMasters  in Materials Characterization

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Course Availability

  • Date(s): 27 Feb 2023 to 14 Apr 2023

    Venue: Online

    Registration Closing Date: 13 Feb 2023

At the end of the course, learners  are able to:

1. Find crystal structure databases accessible and be able to interpret Crystallographic Information Files (CIFs);

2. Understand orderly variations in atomic and ionic radii and exploit these systematics to design materials;

3. Know the characteristics and crystal chemical diversity of simple crystal structure families;

4. Predict the changes in crystal structures when perturbed by changes in temperature, pressure and chemistry;

5. Recognize the types of nonstoichiometric adaptations and the mechanism for incorporating these in crystal structures and ;

6. Critically read authentic texts describing nonstoichiometric functional materials.

1. The Composition of Solids
2. Crystal Chemical Equations and Formula
3. Nonstoichiometry: Ions of Fixed Valence
4. Nonstoichiometry: Ions of Variable Valence
5. Pauling’s Rules for Structure Building
6. Two Dimensional Nonstoichiometric Structures
7. Three Dimensional Nonstoichiometric Structures
8. Nonstoichiometric Functional Materials
9. Interpretation of Authentic Texts on Nonstoichiometric Functional Materials

Suitable for professionals working in Engineering, Quality Control, Failure Analysis, Manufacturing and R&D.

Standard Course Fee: S$2,527.34

Course fee payable after SSG funding, if eligible under various schemes

Cat-A SSG Funded Courses


Enhanced Training Support for SMEs (ETSS) 


Mid-Career Enhanced Subsidy (MCES)

  • All fees stated are inclusive of 7% GST.
  • SkillsFuture Credit can be used to offset course fees payable. Click here for more information.
  • NTU/NIE alumni may utilise their $1,600 Alumni Course Credits. Click here for more information. 
    Read more about funding
    CET772 Principles and Adaptation2
    CET774 Organic Structural Materials1
    CET775 Organic Electronic Materials1
    CET776 Organic Optical Materials1
    CET777 Thermal Analysis1
    CET778 Surface Analysis1
    CET779 Tissue – Material Interactions1
    CET780 Materials in Medicine1
    CET781 Tissue Engineering & Drug Delivery1
    CET782 Processes for Particulate Materials and Bulk Materials 1
    CET783 Vacuum Processes1
    CET784 Solution Processes1
    CET785 Fundamentals of Electron Microscopy1
    CET786 Advanced Characterization using TEM Techniques1

    Listed courses are:

    • Credit-bearing and stackable to Graduate Certificate in Materials Characterization (total 9AUs) and FlexiMasters in Materials Characterization (total 15AUs).