A cryostat for the measurement of magnetic susceptibility between 0·3 and 20°K

摘要: A cryostat is described for the measurement of magnetic susceptibilities at all temperatures from 03 to 20°K in one single experiment. The susceptibility measured by a.c. mutual inductance method. sample, kept cold during whole experiment, inside a small glass Dewar immersed 4He bath. measuring coils surround and are also submerged Inside 3He, H2 can be separately liquefied means external With aid an electrical heater carbon thermometer, between 4 14°K produced with overall precision better than 06%. sample held so that its position adjusted or removed completely any temperature.