2002/07/18 by J. Androulakis, John Androulakis, N. Katsarakis +2
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Magnetic and transport properties of perovskites and related materials #Rare-earth and actinide compounds #cond-mat.mtrl-sci
paper · pdf · doi:10.1063/1.1561589
published as J. Appl. Phys. v.93, 5484-5490 (2003) · 29 pages, 10 figures, pdf format
arxiv created 2002/07/18 · openalex publication_date 2003/04/17 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We present a comparative study of both the magnetic and magnetotransport properties for two members of the perovskite solid solution LaNixCo1−xO3 (x=0.2, 0.6) located on opposite sides of the chemically induced metal-to-insulator transition. LaNi0.6Co0.4O3 exhibits metallic behavior and small but negative magnetoresistance, whereas LaNi0.2Co0.8O3 exhibits semiconducting behavior and giant negative magnetoresistance at low temperatures. On the other hand, we observe pronounced similarities in the magnetic properties of both compounds. We provide a consistent explanation regarding the origin of the magnetoresistance in the two members of the solid solution.