High-frequency nuclear quadrupole resonance apparatus for use in pressure cell

F Iwase; K Miyagawa; K Kanoda

doi:10.1063/1.4729377

High-frequency nuclear quadrupole resonance apparatus for use in pressure cell

Rev Sci Instrum. 2012 Jun;83(6):064704. doi: 10.1063/1.4729377.

Authors

F Iwase¹, K Miyagawa, K Kanoda

Affiliation

¹ Department of Applied Physics, University of Tokyo, Hongo, Tokyo 113-8656, Japan. iwase@science.okayama-u.ac.jp

PMID: 22755648
DOI: 10.1063/1.4729377

Abstract

A high-frequency NMR apparatus for use in pressure cell is described. All components of the resonance circuit are set in the pressure cell. This method makes the resonance frequency much less influenced by large stray capacitance residing at the electrical feedthrough of the pressure cell. With the use of this apparatus, a pressure-induced neutral-ionic phase transition in DMTTF-QBr(4) was successfully observed by (79)Br nuclear quadrupole resonance, whose resonance frequency is ∼300 MHz.