A detailed study of the zero-field electrical resistivity and magnetoresistance for the metallic members of the LaNi_{1-x}Co{x}O3 solid solution with 0.3<=x<=0.6 is reported. The low temperature resistivity of the compounds with 0.3<=x<=0.5 exhibits a logarithmic dependence that is characteristic of systems with spin fluctuations. It is suggested that the effect of the magnetic field dependence on the spin fluctuations plays a vital role in determining the magnetoresistive behavior of these compounds. Concrete experimental evidence that classify the chemically induced metal-to-insulator transition (x_{c}=0.65) as a percolative phenomenon is provided. The resistivity data for the x=0.6 metallic compound are analyzed in the framework of cluster percolation threshold theory. The results of this analysis are consistent with the suggestion that the growth of magnetic metallic clusters in the presence of a magnetic field is mainly responsible for the observed giant magnetoresistance effect at low temperatures for the compounds with x>=0.6.
翻译：对LaNi ⁇ 1-x}Co{x}O3固态溶液的金属成员零场电阻度和磁性进行详细研究后,发现0.3 ⁇ x ⁇ 0.6的化合物的低温耐抗性为0.3 ⁇ x ⁇ 0.5的对数依赖性,这是旋转波动系统的特点。建议磁场对旋转波动的依赖效应在确定这些化合物的磁性行为方面起着关键作用。提供了将化学诱导的金属向隔热器过渡(x ⁇ c ⁇ 0.65)归类为渗透性现象的具体实验证据。x=0.6金属化合物的抗性数据在集束透镜理论框架内分析。这一分析的结果与下述建议是一致的,即磁场存在磁性金属聚集的生长主要是在低温下观察到的、具有x ⁇ 0.6的化合物巨型磁性反应效应。
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