AI Article Synopsis
- The study explores the properties of the compound [Ni(quinoline-8-selenoate)] ([Ni(qs)]), focusing on its magnetic, structural, conductivity, and magnetoresistance characteristics.
- Despite being insoluble and studied as a powdered sample, [Ni(qs)] exhibits extremely high conductivity, outperforming a similar thiol compound and is explained via a space-charge limited conduction mechanism.
- The introduction of selenium enhances molecular interactions, leading to nearly metallic conductivity; additionally, the material shows a significant negative magnetoresistance effect in magnetic fields, explained through a double-exchange mechanism at low and moderate temperatures.
Article Abstract
The magnetic, structural, conductivity and magnetoresistance properties of [Ni(quinoline-8-selenoate)] ([Ni(qs)]) have been studied. Despite the insolubility of the material necessitating its study as a powdered sample, a remarkably high conductivity has been measured. The conductivity is an order of magnitude greater than the thin-film processable thiol analogue previously reported and has been interpreted through the same space-charge limited conduction mechanism with charges injected from the electrodes. The introduction of selenium, results in a material with conductivity approaching metallic due to the enhanced interaction between adjacent molecules. Additionally, under an applied magnetic field, the material displays a negative magnetoresistance effect above 35% at 2 K. The effect can still be observed at 200 K and is interpreted in terms of a double-exchange mechanism.
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| http://dx.doi.org/10.1039/c7cp06273g | DOI Listing |
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