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Optimized Setup and Protocol for Magnetic Domain Imaging with In Situ Hysteresis Measurement
Published on: November 7, 2017
Energy efficient iron based electronic field cycling magnet
Dirk Plendl1, Marian Fujara, Alexei F Privalov
1Institut für Festkörperphysik, TU Darmstadt, Hochschulstrasse 6, 64289 Darmstadt, Germany.
Journal of Magnetic Resonance (San Diego, Calif. : 1997)
|March 10, 2009
Summary
A novel energy-efficient electromagnet was developed for fast field cycling Nuclear Magnetic Resonance (NMR) applications. This magnet offers high field stability and rapid switching capabilities, crucial for advanced NMR studies.
Area of Science:
- Physics
- Materials Science
- Electrical Engineering
Background:
- Fast field cycling Nuclear Magnetic Resonance (NMR) requires specialized electromagnets capable of rapid field changes and high stability.
- Existing electromagnets often face limitations in energy efficiency and switching speed, hindering advanced NMR applications.
Purpose of the Study:
- To present a new concept for an energy-efficient electromagnet designed for fast field cycling NMR.
- To detail the construction and initial performance evaluation of this novel magnet.
Main Methods:
- Design and construction of an electromagnet with an optimized iron yoke and pole pieces for B(0) homogeneity.
- Testing of the magnet's maximum field, field inhomogeneity, power dissipation, slew rate, and stability.
Main Results:
- The electromagnet achieves a maximum field of 0.66 T at 320 A with a field inhomogeneity of approximately 50 ppm for a specified sample size.
- Power dissipation at 0.55 T polarization is remarkably low at 1.4 kW.
- The system demonstrates rapid switching with a slew rate of 0.55 T/ms and exhibits excellent stability of 50 ppm/h.
Conclusions:
- The developed electromagnet is highly energy-efficient and suitable for fast field cycling NMR applications.
- Its performance metrics, including homogeneity, stability, and rapid switching, meet the demanding requirements of advanced NMR techniques.
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