Letter | Published:

Measurement of Easy Direction Dispersion in Magnetic Thin Films

Nature volume 193, page 768 (24 February 1962) | Download Citation

Subjects

Abstract

CLOW1 has described a method for the measurement of the dispersion of the easy direction of magnetization in a single nickel–iron thin film. In this method “a field pulse HA, greater than the anisotropy field HK, was applied along the average difficult direction, and during the latter part of this pulse a small pulse HD was applied along the average easy direction. The flux change parallel to the easy axis, due to the application of HA, was measured with a single pick-up loop, and the minimum value of HD giving full output was taken to be proportional to the maximum value of β (the angular dispersion of the anisotropy axis). In practice, the approach to full output was too gradual for accurate measurement of this minimum value, and a level of HD, HD say, giving 80 per cent full output, was used. An angle β′ given by sinβ′ = HD/HK therefore gives the maximum dispersion in anisotropy over some 80 per cent of the film. Hence, 20 per cent of the film has hard directions at angles to the mean greater than β′, and 80 per cent at angles less than β′”.

Access optionsAccess options

Rent or Buy article

Get time limited or full article access on ReadCube.

from$8.99

All prices are NET prices.

References

  1. 1.

    , Nature, 191, 996 (1961).

  2. 2.

    , J. App. Phys., 30, No. 4, 272S (1959).

  3. 3.

    , J. App. Phys., 32, 70S (1961).

  4. 4.

    , Proc. Symp. Elec. and Magnetic Prop. Thin Metallic Layers Leuven, (Sept. 1961).

Download references

Author information

Affiliations

  1. Mullard Research Laboratories, Salfords, Nr. Redhill, Surrey.

    • R. V. PEACOCK
    •  & G. WINSOR

Authors

  1. Search for R. V. PEACOCK in:

  2. Search for G. WINSOR in:

About this article

Publication history

Published

DOI

https://doi.org/10.1038/193768a0

Further reading

Comments

By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.