Spherical sample holders to improve the susceptibility measurement of superparamagnetic materials

Titelangaben

Friedrich, Thomas ; Lang, Tobias ; Rehberg, Ingo ; Richter, Reinhard:
Spherical sample holders to improve the susceptibility measurement of superparamagnetic materials.
In: Review of Scientific Instruments. Bd. 83 (2012) Heft 4 . - 045106.
ISSN 1089-7623
DOI: https://doi.org/10.1063/1.3700185

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Abstract

The design of two custom sample holders with a spherical cavity for commercial vibrating sample magnetometer systems is described. For such cavities, the magnetization M[over ->] and the internal magnetic field H(i)[over ->] of a sample are both homogeneous. Consequently, the material parameter M(H(i)) of a sample can be determined even for liquids and powders with a high magnetic susceptibility.