Nuclear Magnetic Resonance Probe Head Design for Precision Strain Control

Abstract

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%. ${}^{75}$As NMR in BaFe${}_2$As${}_2$ 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.

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References in corpus (4)

• Commensurate Itinerant Antiferromagnetism in BaFe2As2: 75As-NMR Studies on a Self-Flux Grown Single Crystal
• Effect of biaxial strain on the phase transitions of Ca(Fe1-xCox)2As2
• NMR study of nematic spin fluctuations in a detwinned single crystal of underdoped Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$
• Non-linear effect of uniaxial pressure on superconductivity in CeCoIn5

Cited by in corpus (1)

• Local nematic susceptibility in stressed BaFe${}_2$As${}_2$ from NMR electric field gradient measurements