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Materials Science Applications of the New National Institute of Standards and Technology Powder Diffractometer

Published online by Cambridge University Press:  22 February 2011

J. K. Stalick ,
E. Prince ,
A. Santoro ,
I. G. Schroder  and
J. J. Rush
J. K. Stalick
Affiliation:
Reactor Radiation Division, National Institute of Standards and Technology, Gaithersburg, MD 20899
E. Prince
Affiliation:
Reactor Radiation Division, National Institute of Standards and Technology, Gaithersburg, MD 20899
A. Santoro
Affiliation:
Reactor Radiation Division, National Institute of Standards and Technology, Gaithersburg, MD 20899
I. G. Schroder
Affiliation:
Reactor Radiation Division, National Institute of Standards and Technology, Gaithersburg, MD 20899
J. J. Rush
Affiliation:
Reactor Radiation Division, National Institute of Standards and Technology, Gaithersburg, MD 20899
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Abstract

The new high-resolution neutron powder diffractometer BT-1 at the NIST reactor has proven to be a powerful and versatile instrument in its first year of operation. With 32 detectors arranged at 5° intervals and a 12° 2θ scan range, powder diffraction patterns can be collected to 167° 2θ. There is a choice of three monochromator take-off angles (75°, 90°, and 120°) so that the peak-width minimum can be matched to the rf-spacing range that is most important for each sample; all choices have a wavelength close to 1.54 Å. Data can be collected on sample sizes ranging from 200 mg to 30 g. Temperatures of 0.3 K to 1400 K are routinely available, and a magnetic field of 7T can be applied with a superconducting magnet. Typical data collection times range from 1-12 hours depending upon sample size and desired resolution. Examples are given of a variety of materials applications.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 376: Symposium BB – Neutron Scattering in Materials Science , 1994 , 101
Copyright
Copyright © Materials Research Society 1995

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References

REFERENCES

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4 Stalick, J. K., 1994 (unpublished).Google Scholar
5 Morris, R. E., Owen, J. J., Stalick, J. K., and Cheetham, A. K., J. Solid State Chem., 111, 52 (1994).Google Scholar