The Hall Effect and Allied Phenomena in Rare Metals and Alloys

TT is important for the development of the theory covering the Hall -*-effect and allied phenomena to extend the investigation of these phenomena to as many metals and alloys as possible.Although the data in this region are already very extensive, several of the less well known and less easily obtained metals have not been studied.It is the purpose of this investigation to make a study of these phenomena in some of the rarer metals which can be obtained in a form suitable for such an investigation.The metals studied are molybdenum, tungsten, indium, cerium, tantalum, thallium, lithium, and iron-cobalt alloy.The molybdenum and tungsten were kindly sent to me by the General Electric Company.The indium, cerium, thallium and lithium were obtained from Merck & Company.The tantalum came from Kahlbaum.The iron-cobalt alloy was kindly given me by Mr. Williams, of the University of Illinois.The iron and cobalt entered into the alloy in the proportions indicated by the formula Fe 2 Co. Williams 1 has shown that this alloy has a higher value of the intensity of magnetization than either iron or cobalt.