Diffraction and spectroscopic assessment of crystallographic phase stability of potassium dihydrogen phosphate at shocked conditions

In this experimental work, potassium dihydrogen phosphate (KDP) has been analyzed systematically for its crystallographic structural stability in such a way that its structure has been examined periodically at 500 and 1000 shock waves loaded conditions. A Raman spectrometer and powder X-ray diffract...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2022-02, Vol.627, p.413549, Article 413549
Main Authors: Sivakumar, A., Dhas, S. Sahaya Jude, Sivaprakash, P., Vigneshwaran, B., Arumugam, S., Britto Dhas, S.A. Martin
Format: Article
Language:English
Subjects:
Chemical precipitation
Crystal structure
Crystallography
Diffraction
KDP crystal
KDP crystals
Phase stability
Phase transitions
Potassium
Potassium phosphates
Raman spectroscopy
Room temperature
Shock waves
Stability analysis
Structural deformations
Structural stability
X-ray diffraction
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Summary:In this experimental work, potassium dihydrogen phosphate (KDP) has been analyzed systematically for its crystallographic structural stability in such a way that its structure has been examined periodically at 500 and 1000 shock waves loaded conditions. A Raman spectrometer and powder X-ray diffractometer (XRD) have been used to monitor the structural changes induced by shock waves in KDP samples. The observed Raman and XRD data reveal that no phase transition has occurred in the test crystal even at 1000 shocks loaded condition, but some structural deformations along with a few shoulder peaks are observed. Moreover, a few unknown crystalline peaks are observed at room temperature in the powder XRD pattern. It could be noted that, to the best of our knowledge as of now, such kinds of results in KDP crystal have not been observed. •The effect of shock waves on structural poly-crystalline-KDP crystals is reported.•KDP samples do not undergo any phase transition at shocked conditions.•Photoluminescence intensity of the KDP samples is reduced at shocked conditions.
ISSN:0921-4526
1873-2135
DOI:10.1016/j.physb.2021.413549