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Magnetic investigation of Cu(NH3)4(NO3)2 |
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| Authors: | S.N. Bhatia C.J. O''Connor R.L. Carlin H.A. Algra L.J. de Jongh |
| Affiliation: | Department of Chemistry, University of Illinois at Chicago Circle, Chicago, Illinois 60680, USA Kamerlingh Onnes Laboratorium, University of Leyden, Leyden, The Netherlands |
| 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 = 1/2 antiferromagnet. |
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