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Applied physics

, Volume 14, Issue 2, pp 161–168 | Cite as

A SQUID system for low-drift magnetization measurements

  • H. Rogalla
  • C. Heiden
Contributed Papers

Abstract

A system is described which, using an rf-biased SQUID and an adjustable flux transformer, can be applied to low-drift magnetization measurements. With microwaves as bias signal and a modulation frequency of 11 MHz, a slew rate of 2·107 flux quanta/s in closed-loop operation of the SQUID is achieved. This corresponds to a maximum traceable rate of flux change at the flux transformer input of 4·10−3 V, allowing to investigate also specimens with considerable spontaneous magnetization changes (flux jumps).

PACS Codes

07.55+x 74 

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Copyright information

© Springer-Verlag 1977

Authors and Affiliations

  • H. Rogalla
    • 1
  • C. Heiden
    • 1
  1. 1.Institut für Angewandte PhysikUniversität MünsterMünsterFed. Rep. Germany

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