Electron transport and magnetic properties of some mixed-valent alkalithiocuprates |
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Authors: | Bijoy Prosad Ghosh Muktimoy Chaudhury K. Nag |
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Affiliation: | Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Calcutta 700 032, India |
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Abstract: | Electrical transport properties of some two-dimensional isostructural compounds KCu4S3, RbCu4S3, and CsCu4S3 and a one dimensional conductor Na3Cu4S4 have been investigated. Conductivities have been measured on pelletized materials in the temperature range 300 to 150 K. All of them behave as metallic conductors. The room temperature conductivities of these compounds are KCu4S3, 1600 Ω?1 cm?1; RbCu4S3, 1400 Ω?1 cm?1; CsCu4S3, 1250 Ω?1 cm?1; Na3Cu4S4, 700 Ω?1 cm?1. The observed trend in conductivities among the isostructural compounds may be rationalized either on the basis of shortest CuCu distances or on the carrier charge concentrations per unit volume. All of these compounds behave as Pauli paramagnetic materials. |
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Keywords: | To whom correspondence should be addressed. |
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