Neutron diffraction on a vertical axis goniometer; high temperature diffraction furnace for all atmospheres

Area of Science:

• Materials Science
• Solid-State Chemistry
• Crystallography

Background:

• High-temperature studies of polycrystalline solids are crucial for understanding material properties.
• Neutron diffraction is a powerful technique for structural analysis.
• Existing equipment may have limitations in studying materials under their equilibrium atmosphere at elevated temperatures.

Purpose of the Study:

• To design and implement a specialized diffraction cell, the diffractofurnace.
• To enable neutron diffraction pattern recording for polycrystalline solids.
• To facilitate high-temperature studies of oxides under their equilibrium atmosphere.

Main Methods:

• Development of a diffractofurnace for a vertical axis goniometer.
• Recording neutron diffraction patterns of polycrystalline solids.
• Operated within a 0 to 120 degrees (2theta) angular range.

Main Results:

• Successful design and implementation of the diffractofurnace.
• Demonstrated capability to record diffraction patterns at high temperatures.
• Presented an example diffraction pattern of cubic iron(II) oxide (wustite).

Conclusions:

• The diffractofurnace is a valuable tool for high-temperature neutron diffraction.
• Enables in-situ studies of oxides under controlled atmospheric conditions.
• Provides insights into the crystal structure of materials like iron(II) oxide at elevated temperatures.