A Sub-Kelvin Cryogen-Free EPR System

Simon Melhuish; Chloe Stott; Ana-Maria Ariciu; Lorenzo Martinis; Mark Mcculloch; Lucio Piccirillo; David Collison; Floriana Tuna; Richard Winpenny

doi:10.1016/j.jmr.2017.07.007

A Sub-Kelvin Cryogen-Free EPR System

Simon Melhuish, Chloe Stott, Ana-Maria Ariciu, Lorenzo Martinis, Mark Mcculloch, Lucio Piccirillo, David Collison, Floriana Tuna, Richard Winpenny

Research output: Contribution to journal › Article › peer-review

Abstract

We present an EPR instrument built for operation at Q band below 1 K. Our cryogen-free Dewar integrates with a commercial electro-magnet and bridge. A description of the cryogenic and RF systems is given, along with the adaptations to the standard EPR experiment for operation at sub-Kelvin temperatures. As a first experiment, the EPR spectra of powdered Cr12O9(OH)3(O2CCMe3)15 were measured. The sub-Kelvin EPR spectra agree well with predictions, and the performance of the sub-Kelvin system at 5 K is compared to that of a commercial spectrometer.

Original language	English
Journal	JOURNAL OF MAGNETIC RESONANCE
Volume	282
Early online date	20 Jul 2017
DOIs	https://doi.org/10.1016/j.jmr.2017.07.007
Publication status	Published - 2017

Keywords

cryogen-free
EPR
sub-Kelvin

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10.1016/j.jmr.2017.07.007Licence: CC BY

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title = "A Sub-Kelvin Cryogen-Free EPR System",

abstract = "We present an EPR instrument built for operation at Q band below 1 K. Our cryogen-free Dewar integrates with a commercial electro-magnet and bridge. A description of the cryogenic and RF systems is given, along with the adaptations to the standard EPR experiment for operation at sub-Kelvin temperatures. As a first experiment, the EPR spectra of powdered Cr12O9(OH)3(O2CCMe3)15 were measured. The sub-Kelvin EPR spectra agree well with predictions, and the performance of the sub-Kelvin system at 5 K is compared to that of a commercial spectrometer.",

keywords = "cryogen-free , EPR, sub-Kelvin ",

author = "Simon Melhuish and Chloe Stott and Ana-Maria Ariciu and Lorenzo Martinis and Mark Mcculloch and Lucio Piccirillo and David Collison and Floriana Tuna and Richard Winpenny",

year = "2017",

doi = "10.1016/j.jmr.2017.07.007",

language = "English",

volume = "282",

journal = "JOURNAL OF MAGNETIC RESONANCE",

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T1 - A Sub-Kelvin Cryogen-Free EPR System

AU - Melhuish, Simon

AU - Stott, Chloe

AU - Ariciu, Ana-Maria

AU - Martinis, Lorenzo

AU - Mcculloch, Mark

AU - Piccirillo, Lucio

AU - Collison, David

AU - Tuna, Floriana

AU - Winpenny, Richard

PY - 2017

Y1 - 2017

N2 - We present an EPR instrument built for operation at Q band below 1 K. Our cryogen-free Dewar integrates with a commercial electro-magnet and bridge. A description of the cryogenic and RF systems is given, along with the adaptations to the standard EPR experiment for operation at sub-Kelvin temperatures. As a first experiment, the EPR spectra of powdered Cr12O9(OH)3(O2CCMe3)15 were measured. The sub-Kelvin EPR spectra agree well with predictions, and the performance of the sub-Kelvin system at 5 K is compared to that of a commercial spectrometer.

AB - We present an EPR instrument built for operation at Q band below 1 K. Our cryogen-free Dewar integrates with a commercial electro-magnet and bridge. A description of the cryogenic and RF systems is given, along with the adaptations to the standard EPR experiment for operation at sub-Kelvin temperatures. As a first experiment, the EPR spectra of powdered Cr12O9(OH)3(O2CCMe3)15 were measured. The sub-Kelvin EPR spectra agree well with predictions, and the performance of the sub-Kelvin system at 5 K is compared to that of a commercial spectrometer.

KW - cryogen-free

KW - EPR

KW - sub-Kelvin

U2 - 10.1016/j.jmr.2017.07.007

DO - 10.1016/j.jmr.2017.07.007

M3 - Article

SN - 1090-7807

VL - 282

JO - JOURNAL OF MAGNETIC RESONANCE

JF - JOURNAL OF MAGNETIC RESONANCE

ER -

A Sub-Kelvin Cryogen-Free EPR System

Abstract

Keywords

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