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Updated: Aug 27, 2025
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A Novel Technique for Raman Analysis of Highly Radioactive Samples Using Any Standard Micro-Raman Spectrometer
Published on: April 12, 2017
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High pressure Raman study of LiClO4
DongFei Li1, Shuo Zhang2, Hongsheng Jia3
1Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, Jilin Province, PR China; State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, Jilin Province, PR China.
Summary
Lithium perchlorate (LiClO4) high-pressure Raman spectroscopy revealed two distinct phase transformations. These structural changes are critical for understanding the stability and performance of this high-energy oxidizer.
Area of Science:
- Materials Science
- Solid-State Chemistry
- Spectroscopy
Background:
- Lithium perchlorate (LiClO4) is a high-energy oxidizer with potential applications in energetic materials.
- Understanding the structural stability of LiClO4 under pressure is crucial for its performance and safety.
Purpose of the Study:
- To investigate the structural stability of lithium perchlorate (LiClO4) crystal under high pressure using Raman spectroscopy.
- To identify and characterize pressure-induced phase transformations in LiClO4.
Main Methods:
- Raman spectra of LiClO4 crystal were measured from ambient pressure up to 25.07 GPa.
- Diamond anvil cells (DACs) were employed at room temperature.
- Spectroscopic analysis included lattice modes, band splitting, and frequency shifts.
Main Results:
- Comprehensive resolution of Raman vibrational modes of LiClO4 at ambient pressure.
- Observation of a first-order phase transformation at 1.96 GPa.
- Detection of a second pressure-induced phase transformation around 5.09 GPa.
Conclusions:
- Lithium perchlorate (LiClO4) undergoes significant structural changes under high pressure.
- Two distinct phase transformations were confirmed through detailed Raman spectroscopic analysis.
- The findings provide critical insights into the pressure-dependent behavior of LiClO4 for energetic material applications.
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