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Development of High-Field ESR System Using SQUID Magnetometer and its Application to Measurement under High Pressure
Journal of Magnetics, Volume 18, Number 2, 30 Jun 2013, Pages 168-172
Abstract
We have developed a high-field and high-frequency ESR system using a commercially available magnetometer equipped with the superconducting quantum interference device (SQUID). This is magnetization detection type ESR and ESR is observed as a change of the magnetization at the resonance condition under irradiation of the electromagnetic wave. The frequency range is from 70 to 315 GHz and the maximum magnetic field is 5 T. The sensitivity is estimated to be 1013 spins/G. The advantage of this system is that the high-field ESR measurements can be made very easily and quantitatively. Moreover, this high-field ESR can be applied to the measurements under pressure by using a widely used piston-cylinder pressure cell.
Keywords: ESR; high field; magnetization detection; SQUID; pressure cell
DOI: http://dx.doi.org/10.4283/JMAG.2013.18.2.168
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