2008/03/05 by Swapnil Patil, Kartik K. Iyer, Patil, Swapnil +5
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Magnetic Properties of Alloys #Materials Science (cond-mat.mtrl-sci) #Metallurgical and Alloy Processes #Rare-earth and actinide compounds #Strongly Correlated Electrons (cond-mat.str-el)
paper · pdf · doi:10.48550/arxiv.0803.0652
openalex publication_date 2008/03/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The results of magnetic susceptibility, electrical resistivity (rho), and heat capacity measurements as a function of temperature are reported for the alloys, Ce2Rh(1-x)Co(x)Si3, crystallizing in an AlB2-derived hexagonal strcture. Ce2RhSi3 exhibits antiferromagnetic ordering at 7 K. The Neel temperature decreases gradually with the increase in Co concentration. For x greater than 0.6, no magnetic ordering is observed down to 0.5 K. Interestingly, the x= 0.6 alloy exhibits signatutes of non-Fermi liquid behavior, while the Co end member is a Fermi liquid. Thus, a transformation of magnetic ordering state to non-magnetism via non-Fermiliquid state by isoelectronic chemical doping is evident in this solid solution. The electrical resistivity data for x= 0.2 and 0.3 alloys show an upturn at respective Neel temperatures, establishing the formation of a magnetism-induced pseudo-gap for these intermediate compositions alone as though there is a gradual Fermi surface transformation as the quantum critical point is approached.