We present two microwave probe stations with motorized rotary stages for adjusting the magnitude and angle of the applied magnetic field. In the first system, the magnetic field is provided by an electromagnet and can be adjusted from 0 to ∼1.4 T while its polar angle (θ) can be varied from 0° to 360°. In the second system, the magnetic field is provided by a Halbach array permanent magnet, which can be rotated and translated to cover the full range of polar (θ) and azimuthal (φ) angles with a tunable field magnitude up to ∼1 T. Both systems are equipped with microwave probes, bias-Ts, amplifiers, and spectrum analyzers to allow for microwave characterization up to 40 GHz, as well as software to automatically perform continuous large sets of electrical and microwave measurements.
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June 2018
Research Article|
June 04 2018
Microwave probe stations with three-dimensional control of the magnetic field to study high-frequency dynamics in nanoscale devices
Seyed Amir Hossein Banuazizi
;
Seyed Amir Hossein Banuazizi
a)
1
Materials and Nanophysics, Department of Applied Physics, School of Engineering Sciences, KTH Royal Institute of Technology
, Electrum 229, 164 40 Kista, Sweden
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Johan Åkerman
Johan Åkerman
b)
1
Materials and Nanophysics, Department of Applied Physics, School of Engineering Sciences, KTH Royal Institute of Technology
, Electrum 229, 164 40 Kista, Sweden
2
Department of Physics, University of Gothenburg
, 412 96 Gothenburg, Sweden
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a)
Electronic mail: ahba@kth.se
b)
Electronic mail: johan.akerman@physics.gu.se
Rev. Sci. Instrum. 89, 064701 (2018)
Article history
Received:
April 03 2018
Accepted:
May 13 2018
Citation
Seyed Amir Hossein Banuazizi, Johan Åkerman; Microwave probe stations with three-dimensional control of the magnetic field to study high-frequency dynamics in nanoscale devices. Rev. Sci. Instrum. 1 June 2018; 89 (6): 064701. https://doi.org/10.1063/1.5032219
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