Development of a Nano-Tesla Magnetic Field Shielded Chamber and Highly Precise AC-Susceptibility Measurement Coil at μK Temperatures

摘要

A special sample measurement chamber has been developed to perform experiments at ultralow temperatures and ultralow magnetic field. A high permeability material known as cryoperm 10 and Pb is used to shield the measurement space consisting of the signal detecting set-up and the sample. The detecting setup consists of a very sensitive susceptibility coil wound on OFHC Cu bobbin.