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首页> 外文期刊>Physical chemistry chemical physics: PCCP >Giant negative magnetoresistance in Ni(quinoline-8-selenoate)(2)
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Giant negative magnetoresistance in Ni(quinoline-8-selenoate)(2)

机译:Ni中的巨磁磁阻(喹啉-8-硒酸盐)(2)

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摘要

The magnetic, structural, conductivity and magnetoresistance properties of [Ni( quinoline-8-selenoate)(2)] ([Ni(qs)(2)]) 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.
机译:已经研究了[Ni(喹啉-8-硒酸盐)(2)]([Ni(QS)(2)])的磁性,结构,导电性和磁阻性质。 尽管材料的不透明度需要其作为粉末样品的研究,但已经测量了显着的高导电性。 电导率是比先前报道的薄膜可加工硫醇类似物的数量级,并且已经通过与从电极注入的电荷的相同的空间电荷有限传导机构解释。 由于相邻分子之间的增强相互作用,引入硒,导致导电性接近金属的材料。 另外,在施加的磁场下,该材料在2k时显示出高于35%的负磁阻效果。仍然可以在200 k下观察到效果,并以双重交换机制解释。

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