  ICDD Rietveld Refinement & Indexing Clinic
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Powder pattern Indexing and Rietveld structural refinement techniques are complementary and are often combined to determine the structure of a material. Successful indexing of a powder pattern is considered strong evidence for phase purity.
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Indexing (with derived space group and lattice symmetry determinations) is considered a prelude to determining the crystal structure, and permits phase identification by lattice matching techniques. The Rietveld method is used to refine crystal structures and is perhaps best considered whole- pattern-fitting structure refinement, i.e., we must account not only for the crystal structure but also the instrumental resolution and diffraction physics effects (e.g., crystallite size and strain). The aim is to perform quantitative phase analysis and identification.
This clinic introduces the theory and formalisms of various indexing methods and structural refinement techniques. One unique aspect of this clinic is the extensive use of computer laboratory problem solving and exercises that teach method development in a hands-on environment. We will use EXPGUI and GSAS for the Rietveld laboratory work; Crysfire (especially Dicvol, Ito and Treor) will be used for indexing exercises.
The format of the clinic is a combination of morning lectures and afternoon computer lab exercises. Ample opportunity for individual student-faculty interaction exists throughout the week.Â
When & Where
25 – 29 September 2023
Register before 14 August 2023 and save $250!
ICDD Headquarters
12 Campus Boulevard
Newtown Square, PA 19073-3273 USA
Phone: (610) 325-9814
COVID-19:
ICDD is keeping a close watch on the coronavirus situation. At present, all clinics are scheduled as an in-person class; this could change if warranted.
If you have any questions, please contact clinics@icdd.com
Lecture Components
Basic Crystallography
- Emphasis on space groups, conventions, etc.
Powder Pattern Indexing
- Data reduction methods for peak finding
- We will use Dicvol 04, Treor and Ito indexing examples
- Crysfire will also be discussed
Rietveld Structural Refinement
- History and motivation for development of this technique
- Qualitative description of various sample and instrument-related functions for profile shape, background, etc.
- The use of least-squares constraints will be explored
LeBail and Pawley Fitting Procedures
- What to do when atomic coordinates are not available
- Discussion on use of these tools for structure determination
- Use in powder pattern indexing
Computer Lab Components
Exercise problems will include:
- Single phase indexing
- Single phase refinement (all crystalline materials)
- Multiphase refinement (all crystalline materials)
- Nanophase, and small crystallite size content
- Amorphous phase + crystalline phase(s)
Schedule
Sessions are held:
- Monday through Thursday: 8:30 am to 5:30 pm
- Friday: 8:30 am to 4:00 pm
Faculty
The clinic faculty is selected from academic, industrial and government institutions under the direction of ICDD Management.
See entire ICDD clinic faculty.
Rietveld Refinement & Indexing Clinic
25 – 29 September 2023
Register by 14 August 2023: $1,700 USD
After 14 August 2023: $1,950 USD
All participants must complete the 2023 ICDD Event Health Waiver in order to participate.
Click the button above, or fill out the Rietveld Registration Form here.
Have a group of 3 or more attendees? Contact clinics@icdd.com for pricing. To obtain the group discount, all registrations must be submitted at the same time. Registrations made before or after are not eligible for the discount.
Registration fees for training courses include lecture, workshop and lab materials as well as catered lunches on all full days. Payment must be received prior to the start of the course to attend. Online registrations will be accepted up until two weeks before the start of the course; after that time, please call for availability.
ICDD reserves the right to use any and all photographs taken throughout the course to promote the clinics without additional approval from you, the participant.
HOST HOTEL
The Hilton Garden Inn Newtown Square is the host hotel for the ICDD clinics. Accommodations booked within our room block will include daily breakfast and round trip transportation to ICDD. Please be sure to use the reservation link for your particular clinic.
Tuition Waiver Opportunities
ICDD offers a limited number of tuition waivers for the Rietveld Refinement & Indexing Clinic. Faculty members and graduate students are encouraged to apply. If you are currently developing a program in Rietveld Analysis, and are interested in incorporating these topics into an established course, a tuition waiver can provide you with the opportunity to learn the principles and practices from some of the experts in the field.
Get more information and apply.
Transfer, Cancellation and Refund Policy
ICDD must guarantee payment for meals and materials in advance. You will receive a 50% refund of the paid registration fee if your written cancellation is received at ICDD 20 business days prior to the start of the class. With less notice, a colleague may take your place, or the course materials will be mailed to you, but no refund will be given.
Please note:Â A minimum of 10 registrants per course is required, otherwise the course will be cancelled and your registration fee will be refunded. You will be notified of a course cancellation no later than two weeks prior to the start of the course.
If you have any questions, please contact clinics@icdd.com
