Magnetic Susceptibility ofHe3Adsorbed on Sintered Silver Powder

Abstract
The magnetic susceptibility of He3 adsorbed on sintered silver powder has been measured in the temperature range from 0.8 mK to about 10 mK with a SQUID magnetometer for eight different film thicknesses between monolayer and 15 layers. The measured susceptibility of films less than about 5 layers thick obeys the Curie law with the Curie constants given by the free localized model. In films more than 5 layers thick, the measured susceptibility is described by the Curie-Weiss behavior with a Curie-Weiss temperature of about 0.4 mK.