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$On-Chip Crystallization and Large-Scale Serial Diffraction at Room Temperature$

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¹IRC for Sustainable Energy Systems, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia.

|April 25, 2024

Summary

Researchers developed a novel variable temperature X-ray diffractometer for open-air heating and cooling studies. This new setup effectively analyzes material structural phase transitions, like those in chromium nitride thin films.

Keywords:

Bioengineering Biological samples Molecular beam epitaxy Open Air X-ray Diffractometer with Variable Temperature Capabilities Phase change material Structural phase transition Variable-temperature x-ray diffraction

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Area of Science:

Materials Science
Crystallography
Physical Chemistry

Background:

Materials exhibit thermal expansion/contraction due to temperature changes, affecting atomic distances.
X-ray diffraction (XRD) is crucial for material crystal structure analysis.
Traditional XRD setups for variable temperature studies are often expensive, requiring vacuum or specialized controllers.

Purpose of the Study:

To introduce a cost-effective, variable temperature X-ray diffractometer design.
To enable XRD data acquisition during sample heating and cooling in open air.
To investigate structural phase transitions in materials under variable temperatures.

Main Methods:

Design and construction of a novel variable temperature X-ray diffractometer.
Operation in dual modes: heating and cooling in an open-air environment.
Application of the diffractometer to study chromium nitride (CrN) thin films.

Main Results:

The proposed diffractometer successfully acquired XRD data in open-air heating and cooling modes.
The study demonstrated the effectiveness of the new setup for variable temperature analysis.
Structural phase transitions in chromium nitride thin films were successfully investigated.

Conclusions:

The developed variable temperature X-ray diffractometer is effective and versatile.
The setup advances the understanding of complex material behaviors under varying temperatures.
This design offers a more accessible approach to variable temperature XRD studies.