Elsevier

Chemical Physics Letters

Volume 50, Issue 3, 15 September 1977, Pages 353-357
Chemical Physics Letters

Magnetic investigation of Cu(NH3)4(NO3)2

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Abstract

The magnetic properties of Cu(NH3)4(NO3)2 have been measured at low temperatures. Broad maxima in both the susceptibility and specific heat are observed and are consistent with linear chain behavior of a Heisenberg antiferromagnet, with J/k = 3.9 ± 0.1 K. Long-range order sets in at Tc = 0.15 ± 0.01 K, and the ratio kTc/|J| = 0.038 is the lowest observed as yet for a one-dimensional, S = 12 antiferromagnet.

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