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Characteristics of the recording of the hysteresis loops of uniaxial ferromagnetics by means of the magnetooptical Faraday effect

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Measurement Techniques Aims and scope

Conclusions

  1. 1.

    The hysteresis loops of transparent uniaxial ferromagnetics with a Faraday angle of under 0.1 rad may best be recorded by reading the angle of rotation of the analyzer as a function of the magnetic field, this procedure giving the greatest signal/noise ratio.

  2. 2.

    If the Faraday angle is greater than 0.2 rad, a correction due to the nonlinearity of the function Θk must be introduced when using this method of recording, or else a recording method based on the linear relation between the photocurrent and the quantity k should be used.

  3. 3.

    An increase in the signal/noise ratio may be achieved by stabilizing the source of light flux, improving the quality of the polarization systems, and slightly increasing the modulation frequency.

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Literature cited

  1. C. A. Fowler and E. M. Fryer, Phys. Rev.,104 (1956).

  2. I. F. Dillon, Bull. Am. Phys. Soc.,2 (1957).

  3. I. S. Édel'man and N. I. Syrova, Apparatus and Methods of Using Thin Magnetic Films [in Russian], Inst. Fiz. SO AN SSSR, Krasnoyarsk (1968).

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  4. R. Hunt, IEEE Trans., MAG5 (1969).

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Authors
  1. M. M. Chervinskii
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  2. S. F. Glagolev
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  3. I. P. Gorbunov
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  4. V. A. Zheryakov
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Additional information

Translated from Izmeritel'naya Tekhnika, No. 9, pp. 30–32, September, 1973.

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Chervinskii, M.M., Glagolev, S.F., Gorbunov, I.P. et al. Characteristics of the recording of the hysteresis loops of uniaxial ferromagnetics by means of the magnetooptical Faraday effect. Meas Tech 16, 1323–1326 (1973). https://doi.org/10.1007/BF00813037

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  • DOI: https://doi.org/10.1007/BF00813037

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