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

TL;DR

This paper presents a novel two-axis goniometer designed for precise sample orientation in single-crystal NMR measurements, enabling independent rotations with minimal error across a wide temperature and magnetic field range.

Contribution

The paper introduces a new two-axis goniometer that allows independent, high-precision rotations for single-crystal NMR, improving measurement accuracy and versatility.

Findings

Achieves high-precision sample orientation in NMR experiments.

Operates effectively across a wide temperature and magnetic field range.

Reduces rotational error without limiting angle range.

Abstract

We report the design and construction of a two-axis goniometer capable of any sample orientation with respect to the external magnetic field. The advantage of this design is that it allows free rotations around a single axis independent of the other which minimizes rotational error without reduction of angle range. Goniometer is capable of operating with high precision at both low and high temperatures and in high magnetic fields. It was mounted on the custom made nuclear magnetic resonance probe for use in Oxford Instruments wide-bore variable field superconducting magnet.