Calculations of the sensitivity function for a mis-aligned thin film in a Mallinson coil set

Studies the accuracy of angular calibrations for VSM measurements on a thin film sample in the presence of misalignments have been performed by computations of the sensitivity function. The pick-up coils are the usual Mallison-type. For a square thin-film sample with dimensions of 4 mm/spl times/4 m...

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Bibliographic Details
Published in:IEEE transactions on magnetics 1994-11, Vol.30 (6), p.4584-4586
Main Author: Hsu, Shau-Wei
Format: Article
Language:English
Subjects:
Anisotropic magnetoresistance
Calibration
Coils
Error correction
Magnetic fields
Magnetic films
Magnetic moments
Measurement standards
Performance evaluation
Transistors
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Summary:Studies the accuracy of angular calibrations for VSM measurements on a thin film sample in the presence of misalignments have been performed by computations of the sensitivity function. The pick-up coils are the usual Mallison-type. For a square thin-film sample with dimensions of 4 mm/spl times/4 mm, the errors due to displacements or off-center rotations of the thin film sample are lower than 5% for all rotation angles if the mis-alignments are controlled to within 1 mm. They increase rapidly, however, if the positional misalignments are larger than 1 mm. If the alignment is performed carefully, the errors caused by tilting the thin film sample is less than 1%. Constraints on the edge length of the thin film is also useful in preventing excessive errors.< >
ISSN:0018-9464
1941-0069
DOI:10.1109/20.334156