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$Synthesis and Microdiffraction at Extreme Pressures and Temperatures$

Synthesis and Microdiffraction at Extreme Pressures and Temperatures

Published on: October 7, 2013

Rapid thermal processing chamber for in-situ x-ray diffraction.

Md Imteyaz Ahmad¹, Douglas G Van Campen¹, Jeremy D Fields²

¹SSRL, SLAC National Accelerator Laboratory, 2575, Sand Hill Road, Menlo Park, California 94025, USA.

The Review of Scientific Instruments

|February 2, 2015

Summary

This summary is machine-generated.

This study introduces a novel rapid thermal processing (RTP) instrument for real-time X-ray diffraction analysis. The new system clarifies material phase changes during RTP, enabling better process optimization for electronics and photovoltaics.

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Area of Science:

Materials Science
Process Engineering
Solid State Chemistry

Background:

Rapid thermal processing (RTP) is crucial for materials synthesis, particularly in electronics and photovoltaics.
Current RTP optimization relies on ex-situ studies, limiting understanding of in-situ reaction pathways and phase progression.
A clearer understanding of RTP mechanisms is needed to enhance process control and material synthesis.

Purpose of the Study:

To develop an advanced rapid thermal processing instrument for real-time in-situ characterization.
To enable high-speed data acquisition (100 ms intervals) during rapid heating (up to 100 °C/s) up to 1200 °C.
To investigate dynamic phase transformations during RTP with unprecedented temporal resolution.

Main Methods:

Design and construction of a portable RTP system integrated with X-ray diffraction capabilities.
Synchrotron-based in-situ X-ray diffraction measurements during rapid heating experiments.
Analysis of phase evolution in a Bi2O3-SiO2 glass frit under varying heating rates (5 °C/s and 100 °C/s).

Main Results:

The developed RTP instrument successfully captured dynamic phase changes during heating.
Distinct phase transitions were observed in the Bi2O3-SiO2 glass frit at different ramp rates.
The system demonstrated the capability for high-resolution, time-resolved in-situ material analysis.

Conclusions:

The novel RTP instrument provides critical insights into real-time material transformations.
Understanding these dynamic processes facilitates optimization of RTP for advanced material applications.
This technology advances in-situ characterization techniques for materials processing.