2010/03/30 by Nicholas P. Butch, N P Butch, M. Brian Maple +1 · 1 citation
Materials Science · Physics and Astronomy · #Hydrogen Storage and Materials #Metallurgical and Alloy Processes #Rare-earth and actinide compounds #cond-mat.str-el
paper · pdf · doi:10.1088/0953-8984/22/16/164204
published as J. Phys.: Condens. Matter 22, 164204 (2010) · 8 pgs, 5 figs, ICM 2009; please refer to Phys. Rev. Lett. 103, 076404 (2009), arXiv:0908.1809 for details on magnetic scaling and phase diagram (reference added to this version)
openalex publication_date 2010/03/30 · arxiv created 2010/04/05 · arxiv updated 2010/04/07 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
Substitution of Re for Ru in the heavy fermion compound URu(2)Si(2) suppresses the hidden order transition and gives rise to ferromagnetism at higher concentrations. The hidden order transition of URu(2 - x)Re(x)Si(2), tracked via specific heat and electrical resistivity measurements, decreases in temperature and broadens, and is no longer observed for x > 0.1. A critical scaling analysis of the bulk magnetization indicates that the ferromagnetic ordering temperature and ordered moment are suppressed continuously towards zero at a critical concentration of x ≈ 0.15, and this is accompanied by the additional suppression of the critical exponents γ and δ - 1 towards zero. This unusual trend appears to reflect the underlying interplay between Kondo and ferromagnetic interactions, and perhaps the proximity of the hidden order phase.