Magnetic susceptibility and Faraday rotation in zirconium based fluoride glasses

Abstract

The temperature dependences of the d.c. magnetic susceptibility and Verdet constant in two zirconium based fluoride glasses have been studied. One sample has as a minor constituent dysprosium which has a large magnetic moment that dominates the material's magnetic character. The second sample, containing a small amount of europium, shows both Van Vleck paramagnetism and a Curie-Weiss behaviour. The Curie-Weiss character is believed to come from small amounts of Zr 3+ and/or Zr 2+ produced during the sample's manufacturing process. An upper limit is placed on the amount of magnetic zirconium in the material.

Magneto-optic studies of rare earth containing sodium silicate glasses and semiconductor quantum dots in glass composites: Nonlinear effects

“…We have studied paramagnetic and diamagnetic materials by Faraday rotation measurements [18]. In our work with paramagnetic rare earth ions in glasses, we find that Terbium oxide provides the strongest Faraday rotation, followed by Dysprosium oxide and Praseodymium oxide.…”

“…When both polarizations emerge from the far end of the sample the recombined plane wave will have its plane of polarization rotated with respect to that of the incident light. More detailed explanations of Faraday rotation are given in the literature [20][21][22][23][24][25][26][27][28][29].…”