Magnetic measurements on chrome-cesium alum below 1° K
Black, Truman D
Donoho, Paul L.
Master of Arts
The static and ballistic magnetic susceptibilities of a pressed powder sample of chrome-cesium alum, which was compounded in this laboratory, have been studied as a function of entropy at temperatures obtained by adiabatic demagnetization. Measurements were made with a moving-coil apparatus in zero external field using a small (.9 gauss) measuring field; measurements were also made with a conventional ballisticgalvanometer apparatus, Susceptibility-versus-entropy curves were established fer both static and ballistic measurements between entropy values of 0.2R and 1.25R, These curves are compared with similar measurements on chromepotassium, chrome-rubidium, and chrome-methylamine alums.