Determination of Exchange Parameters from Magnetic Susceptibility
نویسندگان
چکیده
We report a novel practical method to determine exchange parameters by using experimental susceptibility data in a relatively narrow temperature region and a low order high-temperature-expansion equation. This method is applied to a square lattice and a CaV4O9-type lattice, and its accuracy is discussed.
منابع مشابه
ar X iv : c on d - m at / 9 60 90 73 v 1 7 S ep 1 99 6 Determination of Exchange Parameters for CaV 4 O
Magnetic susceptibility measured for CaV4O9 is analyzed by a method with high temperature expansion. The analysis is consistent with the g-value which is close to 2 and is observed by an ESR experiment. Four exchange parameters in a two-dimensional Heisenberg model are determined to represent CaV4O9. All the exchange parameters are about 500 K and strongly frustrated. The observed spin gap orig...
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