Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1803777 | Journal of Magnetism and Magnetic Materials | 2008 | 6 Pages |
Abstract
The superconducting quantum interference device (SQUID) magnetometer is one of the most sensitive experimental techniques to magnetically characterize samples with high sensitivity. Under realistic experimental conditions, especially for samples on a substrate, the magnetic signal as recorded with a commercial MPMS-SQUID magnetometer, is dominated by artifacts below about 4×10-7emu. Here we present a detailed discussion of possible artifacts and pitfalls characteristic for commercial SQUID magnetometers. We establish a limit below which the presence of a magnetic hysteresis is only necessary but not sufficient to claim the existence of ferromagnetism.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
A. Ney, T. Kammermeier, V. Ney, K. Ollefs, S. Ye,