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An optical faraday rotation technique for the determination of magnetic relaxation times

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1 Author(s)
Danielson, B. ; National Bureau of Standards, Boulder, Colo.

A technique is described for the measurement of macroscopic magnetic relaxation times in crystals using the optical Faraday rotation as a monitor of the magnetization. The method is applied to the paramagnetic Eu2+ion in CaF2:Eu2+at cryogenic temperatures. In this experiment the crystal is placed between a crossed polarizer and analyzer and subjected to a pulsed magnetic field. The transmitted light from a CW argon-ion laser gives a direct indication of the relaxation time.

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Magnetics, IEEE Transactions on  (Volume:4 ,  Issue: 2 )