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Quasi-1D antiferromagnets with S = 1 and : The isostructural compounds AgVP2S6 and AgCrP2S6

✍ Scribed by H. Mutka; C. Payen; P. Molinié; R.S. Eccleston

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
213 KB
Volume
213-214
Category
Article
ISSN
0921-4526

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✦ Synopsis

Time-of-flight inelastic scattering from polycrystalline samples of AgVP2S6 and AgCrPzS6 has revealed characteristic features of integer and half-integer spin antiferromagnetic chains. In the S = 1 system we have followed the temperature dependence of the Haldane-gap mode in a wide temperature range. The staggered susceptibility compares well with numerical calculations and confirms the exchange-energy scale determined earlier. The spin-wave velocity of the S = ~2 system suggests a close resemblance to the S = ½ case.

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