Review of Scientific Instruments · 1979 · 20 citations · 1 references
Natural SciencesMaterials EngineeringMaterials ScienceAnalytical ChemistryMagnetic MaterialsMaterials CharacterizationAnalytical CalibrationCalibrationIron OxidesMagnetic CharacterizationMagnetic OxidesMagnetic SusceptibilityMagnetic Field MeasurementsMagnetic Property CharacterizationMagnetic Property MeasurementMagnetic Susceptibility AnalysisMagnetic Susceptibility CalibrationMagnetic Susceptibility Measurement
Finely ground mixtures of magnetic iron oxide and glass provide a convenient calibration standard of moderate accuracy (approximately 5%) for low-field (<0.5 kA/m) magnetic susceptibility measurements. The use of powders allows fabrication of standards of nearly any shape and size. For our mixtures, which range from 0.063 to 11.8% iron oxide by weight, the susceptibility values vary from 2.65 x 10(-7) to 5.77 x 10(-5) m3/kg, and are nearly linear with iron oxide concentration.
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