Nuclear magnetic resonance probe head design for precision strain control

• Published in: Review of Scientific Instruments
• Main Authors: Kissikov, T., Sarkar, R., Bush, B. T., Lawson, M., Canfield, P. C., Curro, N. J.
• Other Authors: Division of Materials Research, Deutsche Forschungsgemeinschaft, U.S. Department of Energy
• Format: Article in Journal/Newspaper
• Language: English
• Published: AIP Publishing 2017
• Subjects: Razorbill
• Online Access: http://dx.doi.org/10.1063/1.5002631; http://aip.scitation.org/doi/am-pdf/10.1063/1.5002631; https://pubs.aip.org/aip/rsi/article-pdf/doi/10.1063/1.5002631/16129293/103902_1_online.pdf

We present the design and construction of an NMR probe to investigate single crystals under strain at cryogenic temperatures. The probe head incorporates a piezoelectric-based apparatus from Razorbill Instruments that enables both compressive and tensile strain tuning up to strain values on the order of 0.3% with a precision of 0.001%. 75As NMR in BaFe2As2 reveals large changes to the electric field gradient and indicates that the strain is homogeneous to within 16% over the volume of the NMR coil.