New Approaches to the Diffractometer Calibration. Study of InSb in the 90-490 K Temperature Range

New techniques for the calibration of single-crystal diffractometers equipped with a 2D detector are proposed to improve the accuracy of measuring the unit cell parameters. According to these methods, reflection profiles are processed using the original SearchXY-2θ program, and the detector position...

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Bibliographic Details
Published in:Journal of structural chemistry 2023-08, Vol.64 (8), p.1399-1411
Main Authors: Panchenko, A. V., Serebrennikova, P. S., Komarov, V. Yu, Gromilov, S. A.
Format: Article
Language:English
Subjects:
Atomic
Atomic/Molecular Structure and Spectra
Calibration
Chemistry
Chemistry and Materials Science
Diffractometers
Indium antimonide
Inorganic Chemistry
Intermetallic compounds
Molecular
Optical and Plasma Physics
Parameters
Physical Chemistry
Single crystals
Solid State Physics
Unit cell
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Summary:New techniques for the calibration of single-crystal diffractometers equipped with a 2D detector are proposed to improve the accuracy of measuring the unit cell parameters. According to these methods, reflection profiles are processed using the original SearchXY-2θ program, and the detector position is refined by recording an external reference. Details of the calibration of diffractometers equipped with a three- or four-circle goniometer are discussed. The use of reflections with 2θ ≈ 100° when refining the unit cell parameters of a test InSb single crystal allowed measuring parameter a of the cubic unit cell with a relative error of 7·10 –5 . The possibilities of the techniques are also demonstrated on the measurements of the a ( T ) dependence for InSb in the range of 90-490 K.
ISSN:0022-4766
1573-8779
DOI:10.1134/S002247662308005X