@inproceedings{fc835edd57d24a0fbcc4df2137872a51,
title = "A new measuring system for determining the magnetic viscosity in permanent magnets",
abstract = "A new system for measuring magnetic viscosity in bulk hard magnetic materials base on a pulsed field method is presented. After the magnetizing field pulse, the stray field of the sample, which is proportional to the magnetic moment, is measured with a compensated set of two Hall probes. The set of Hall probes is driven with an AC voltage source and the Hall voltage is detected using a lock-in amplifier. By this method the system is able to measure the time dependence of the magnetization (viscosity). The magnetic viscosity coefficient (S) is obtained through a linear fitting of the magnetization decay versus ln t. Two typical Nd-Fe-B samples were measured and good agreement with the results from the traditional viscosity experiment was obtained.",
keywords = "Hall probes, Local measurements, Lock-in technique, Magnetic viscosity, Permanent magnets",
author = "Espina-Hern{\'a}ndez, {J. H.} and R. Gr{\"o}ssinger and R. Sato-Turtelli and Hallen, {J. M.}",
year = "2009",
doi = "10.4028/www.scientific.net/AMR.68.12",
language = "Ingl{\'e}s",
isbn = "0878493239",
series = "Advanced Materials Research",
pages = "12--20",
booktitle = "Advances in Semiconducting Materials",
note = "Advances in Semiconducting Materials ; Conference date: 28-10-2007 Through 01-11-2007",
}