Ein neues Verfahren zur Messung feldstärkeabhängiger Suszeptibilitäten mit der Faraday-Methode,angewandt auf Palladium-Mordenit

A New Method for Measuring Field-dependent Susceptibilities with the Faraday Method, Applied on Palladium Mordenite A simple method to calculate the mean value of an inhomogeneous magnetic field is described, which is needed for susceptibility measurements with a Faraday balance. By combination of the magnetic behaviour of paramagnetic and saturated ferromagnetic calibrating samples we get the magnetic field H = \documentclass{article}\pagestyle{empty}\begin{document}${\rm H} = \frac{{{\rm \sigma}_\infty .{\rm m}_{\rm f}}}{{\chi _{{\rm ges}} \cdot {\rm m}_{{\rm ges}} - \chi _{\rm p}\cdot m_{\rm p}}} $\end{document} $\end{document} (s?_∞ specific saturation magnetization, m mass, χ susceptibility). A Pd-mordenite sample is discussed as an example of a diamagnetic substance with a superparamagnetic impurity. Because the impurity is not magnetically saturated we must take into account the Langevin function. We calculated the diamagnetic susceptibility χ_dia = ?0.411 · 10^?6 cm³/g.