An ultra-low field SQUID magnetometer for measuring antiferromagnetic and 
weakly remanent magnetic materials at low temperatures

Paulsen, M.; Lindner, J.; Klemke, B.; Beyer, J.; Fechner, M.; Meier, D.; Kiefer, K.

doi:10.1063/5.0135877

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

An ultra-low field SQUID magnetometer for measuring antiferromagnetic and weakly remanent magnetic materials at low temperatures

MPS-Authors

/persons/resource/persons222262

Fechner, M.
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

External Resource

https://arxiv.org/abs/2211.12894
(Preprint)

https://doi.org/10.1063/5.0135877
(Publisher version)

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

103904_1_5.0135877.pdf
(Publisher version), 8MB

Supplementary Material (public)

103904_1_5_0135877_suppl_material.zip
(Supplementary material), 6MB

Citation

Paulsen, M., Lindner, J., Klemke, B., Beyer, J., Fechner, M., Meier, D., et al. (2023). An ultra-low field SQUID magnetometer for measuring antiferromagnetic and weakly remanent magnetic materials at low temperatures. Review of Scientific Instruments, 94(10): 103904. doi:10.1063/5.0135877.

Cite as: https://hdl.handle.net/21.11116/0000-000B-F382-F

Abstract

A novel setup for measuring magnetic fields of antiferromagnets (i.e., quadrupolar or higher-order magnetic fields) and generally weakly remanent magnetic materials is presented. The setup features a highly sensitive superconducting quantum interference device magnetometer with a magnetic field resolution of ∼ 10 fT and non-electric temperature control of the sample space for a temperature range of 1.5–65 K with a non-electric sample movement drive and optical position encoding. To minimize magnetic susceptibility effects, the setup components are degaussed and realized with plastic materials in sample proximity. Running the setup in magnetically shielded rooms allows for a well-defined ultra-low magnetic background field well below 150 nT in situ. The setup enables studies of inherently weak magnetic materials, which cannot be measured with high field susceptibility setups, optical methods, or neutron scattering techniques, giving new opportunities for the research on, e.g., spin-spiral multiferroics, skyrmion materials, and spin ices.