Open AccessOn the hysteresis loss and other properties of iron alloys under very small magnetic forces
Publication year - 1908
Publication title -
proceedings of the royal society of london. series a, containing papers of a mathematical and physical character
Language(s) - English
Resource type - Journals
eISSN - 2053-9150
pISSN - 0950-1207
DOI - 10.1098/rspa.1908.0049
Subject(s) - magnetic core , materials science , composite material , electromagnetic coil , magnetic hysteresis , metallurgy , condensed matter physics , physics , magnetic field , electrical engineering , engineering , magnetization , quantum mechanics
The materials chosen for these experiments are the invention of Mr. R. A. Hadfield, and were supplied by Messrs. Sankey and Sons. They are an alloy of iron called “Stalloy,” and a sample of transformer iron called “Lohys.” The principal object of the research is to find the magnetic qualities of these materials when subjected to very small magnetic forces. The specimens for the magnetic tests are in the form of rings composed of stampings wound with a primary and secondary coil, the secondary next to the core. The Stalloy stampings are separated by a thin coating of “insuline,” and the Lohys stampings have paper insulation between every ten stampings. The particulars of the rings are given in Table I. The magnetic properties have been found by the Ballistic Galvanometer method, and the results are given in Table II. Figs. 1 and 2 show the various quantities plotted in terms of the maximum value of the magnetic induction B. The currents for the small magnetising forces were measured in terms of a Clark cell and standard resistance.