Precision Determination of Exchange Strengths in Magnetic Dimers via Birefringence
نویسندگان
چکیده
We report the first results on linear birefringence studies of dimeric crystals. The compounds investigated were CuX2.2TMS0, X = Br, C1, two Heisenberg S = 112 antiferromagnetic dimers. The exchange constants derived from the birefringenc data are J (Br) /k = -23.0 K and J (Cl) /k = -13.0 K, in good agreement with previous estimates. This study demonstrates the feasibility of using birefringence to study interactions in cluster compounds.
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