Abstract
The effects of substituting moment-bearing Tb in CePt2Si2 are reported through X-ray diffraction (XRD), electrical resistivity (ρ(T)), magnetic susceptibility, (χ(T)), and magnetization, (σ(μ0H)) measurements. XRD results for all compositions of (Ce1−xTbx)Pt2Si2 system indicate a tetragonal CaBe2Ge2 - type structure with space group P4/nmm. ρ(T) results indicate a rapid evolution from a coherent Kondo lattice for the CePt2Si2 parent compound to incoherent single-ion Kondo behaviour with substitution of Tb for Ce. However, between 90% and 100% of Tb content, the (Ce1−xTbx)Pt2Si2 system reverts back to stable local - moment, normal metal behaviour. χ(T) data at higher temperature follow the Curie - Weiss relation for all alloy compositions and give effective moment values μeff which increase gradually from the expected values of 2.54 μB for the Ce3+ - ion to 9.72 μB for the Tb3+ - ion. At low temperature χ(T) data exhibit antiferromagnetism at the Ne′ el temperature TN in the concentration range 0.7≤x≤1. Below TN the zero-field-cooled and field-cooled susceptibility bifurcate in a 0.1 T field, suggesting an inhomogeneous magnetic ground state as a result of spin glass - like state for compositions in the range 0.6≤x≤1. No evidence of metamagnetic behaviour was observed from σ(μ0H) data for all compositions.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
