An automated and versatile ultra-low temperature SQUID magnetometer

Details An automated and versatile ultra-low temperature SQUID magnetometer An automated and versatile ultra-low temperature SQUID magnetometer

2004-06-22

arxiv.org/abs/physics/0406098v1

Rev. Sci. Instrum. 76, 023902 (2005)

Physics

Instrumentation and Detectors

RevTex, 10 pages, 10 eps figures. High-resolution figures available upon request

Scientific paper

10.1063/1.1841831

We present the design and construction of a SQUID-based magnetometer for operation down to temperatures T = 10 mK, while retaining the compatibility with the sample holders typically used in commercial SQUID magnetometers. The system is based on a dc-SQUID coupled to a second-order gradiometer. The sample is placed inside the plastic mixing chamber of a dilution refrigerator and is thermalized directly by the 3He flow. The movement though the pickup coils is obtained by lifting the whole dilution refrigerator insert. A home-developed software provides full automation and an easy user interface.

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