2018
DOI: 10.1063/1.5045299
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Tutorial: Basic principles, limits of detection, and pitfalls of highly sensitive SQUID magnetometry for nanomagnetism and spintronics

Abstract: In the field of nanomagnetism and spintronics, integral magnetometry is nowadays challenged by samples with low magnetic moments and/or low coercive fields. Commercial superconducting quantum interference device magnetometers are versatile experimental tools to magnetically characterize samples with ultimate sensitivity as well as with a high degree of automation. For realistic experimental conditions, the as-recorded magnetic signal contains several artifacts, especially if small signals are measured on top o… Show more

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Cited by 118 publications
(77 citation statements)
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“…The magnetic behavior in a field range of ±5 T from room temperature (RT) down to 2 K and the temperature dependence of the magnetization up to 400 K were measured. The data were background corrected for the contribution of the diamagnetic substrate and known artifacts were carefully avoided [15,16].…”
Section: Methodsmentioning
confidence: 99%
“…The magnetic behavior in a field range of ±5 T from room temperature (RT) down to 2 K and the temperature dependence of the magnetization up to 400 K were measured. The data were background corrected for the contribution of the diamagnetic substrate and known artifacts were carefully avoided [15,16].…”
Section: Methodsmentioning
confidence: 99%
“…The magnetization curves are corrected for the diamagnetic background of the substrate obtained from high-field M (H ) data at 300 K [34] and care was taken to minimize the measurement artifacts described in Refs. [34][35][36][37]. Cooling-field-dependent measurements were conducted after cooling the films from room temperature, so well above T N for all concentrations [29], to 2 K in a positive (plus field cooled, pFC) or negative (minus field cooled, mFC) external magnetic field of varying strength.…”
Section: Methodsmentioning
confidence: 99%
“…The field was then quenched (via a magnet reset). This is the most reliable and time-saving manner to minimize offset fields due to flux creep in the magnet coil 26,27 . The offset field (-2 Oe) was characterized on a Pd reference sample.…”
Section: Squid Magnetometry Experiments and Data Analysismentioning
confidence: 99%