Magnetic Behavior of Pressure Quenched Cadmium Sulfide Containing Chlorine
ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER WATERVLIET NY LARGE CALIBER WEAPON SYSTEMS LAB
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Pressure quenched cadmium sulfide CdS containing chlorine Cl has been shown previously to exhibit both very large diamagnetism and paramagnetism. The diamagnetism observed at 77K approached Meissner proportion and suggested superconducting like behavior in this material. The effect is known to depend sensitively on the Cl content of the starting material. This report describes the results of a survey of the magnetic behavior of pressure quenched samples prepared from CdS systematically doped with increasing amounts of Cl. The Cl doped material was prepared in a variety of ways from mixtures of CdS and CdCl2, by precipitation from aqueous solution, and by acid doping. The differently doped starting materials were analyzed for Cl and other impurities before being pressure quenched. The magnetic susceptibilities were subsequently measured. The results of the survey indicate that the concentration of Cl required to produce specimens with anomalously large magnetism is 0.75 or - 0. 10 weight percent. The technique for the preparation of such material is described.
- Inorganic Chemistry
- Electricity and Magnetism