Two-axis goniometer for single-crystal nuclear magnetic resonance measurements

Area of Science:

• Materials Science
• Physics
• Analytical Chemistry

Background:

• Precise sample manipulation is crucial for advanced magnetic field studies.
• Existing goniometers often have limitations in rotational freedom and precision.
• High-precision control is needed for experiments across various temperatures and magnetic field strengths.

Purpose of the Study:

• To design and construct a versatile two-axis goniometer.
• To enable any sample orientation relative to an external magnetic field.
• To achieve high precision in sample positioning under diverse experimental conditions.

Main Methods:

• Developed a two-axis goniometer with independent rotational axes.
• Integrated the goniometer with a custom nuclear magnetic resonance (NMR) probe.
• Tested the system within a superconducting magnet for variable field NMR experiments.

Main Results:

• The goniometer allows free, independent rotations, minimizing angular error.
• It maintains high precision across a range of temperatures (low and high).
• The system demonstrated reliable performance in high magnetic fields.

Conclusions:

• The developed goniometer offers superior sample orientation control for magnetic field research.
• Its precision and versatility make it suitable for demanding NMR and materials science applications.
• This instrument enhances the capability for complex experiments requiring precise sample positioning.