Development of scanning SQUID microscope for studying room temperature samples

摘要

Scanning SQUID microscope based on niobium junction DC SQUID has been developed. The SQUID is mounted inside the insulation vacuum of a cryostat, which is separated from room temperature samples by a 65 mum thick sapphire window. The spatial resolution of the microscope is about 100-150 mum and the magnetic field sensitivity is on the order of 3-60 pT/rootHz in magnetically unshielded environment. Various samples are being studied with the microscope. (C) 2003 Elsevier Science B.V. All rights reserved. [References: 4]