Presentation Title

Mn:MgO Field Standard for High Field EPR

Start Date

November 2016

End Date

November 2016

Location

HUB 302-96

Type of Presentation

Poster

Abstract

In magnetic resonance experiments it can be difficult to determine the exact operating field for field swept spectrometers. These spectrometers give a field reading but a cursory glance at the data shows that many of these magnetic field measurements are slightly incorrect. This is problematic but a Field Standard can mitigate these problems in two main ways. First, it can quickly calibrate the magnetic field in conjunction with other samples. Second, it provides a reference to reliably signal average to correct for hysteresis and phase drifts. Custom Mn:MgO Field Standards were used to fulfill these purposes. This Field Standard was produced by placing by mixing Mn:MgO into an epoxy, depositing a thin layer of epoxy on a mirror and then clamping it down with flat epoxy blocks. It was then tested in the spectrometer for quality assurance. The signal from the Field Standard was analyzed in custom built analysis software to find the quality of the Field Standard for above stated purposes. The Field Standard as works well as expected. The Mn:MgO spectrum offers us six distinct zero crossings which are used to align the field. This works well since the standard deviation of these zero crossings is about 0.1 Gauss. The standard is now used in the lab and more can be produced as needed.

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Nov 12th, 1:00 PM Nov 12th, 2:00 PM

Mn:MgO Field Standard for High Field EPR

HUB 302-96

In magnetic resonance experiments it can be difficult to determine the exact operating field for field swept spectrometers. These spectrometers give a field reading but a cursory glance at the data shows that many of these magnetic field measurements are slightly incorrect. This is problematic but a Field Standard can mitigate these problems in two main ways. First, it can quickly calibrate the magnetic field in conjunction with other samples. Second, it provides a reference to reliably signal average to correct for hysteresis and phase drifts. Custom Mn:MgO Field Standards were used to fulfill these purposes. This Field Standard was produced by placing by mixing Mn:MgO into an epoxy, depositing a thin layer of epoxy on a mirror and then clamping it down with flat epoxy blocks. It was then tested in the spectrometer for quality assurance. The signal from the Field Standard was analyzed in custom built analysis software to find the quality of the Field Standard for above stated purposes. The Field Standard as works well as expected. The Mn:MgO spectrum offers us six distinct zero crossings which are used to align the field. This works well since the standard deviation of these zero crossings is about 0.1 Gauss. The standard is now used in the lab and more can be produced as needed.