Depression of superconducting and antiferromagnetic states in the Dy-rich (U1-xDyx)Ni2B2C solid solutions

Authors
Goncalves, AP Pereira, LCJ Kuznietz, M Almeida, M Silva, PAS Godinho, M
Citation
Ap. Goncalves et al., Depression of superconducting and antiferromagnetic states in the Dy-rich (U1-xDyx)Ni2B2C solid solutions, PHYSICA B, 281, 2000, pp. 1007-1009
Citations number
7
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA B
ISSN journal
09214526 → ACNP
Volume
281
Year of publication
2000
Pages
1007 - 1009
Database
ISI
SICI code
0921-4526(200006)281:<1007:DOSAAS>2.0.ZU;2-K
Abstract
Polycrystalline Dy-rich (U1-xDyx)Ni2B2C solid solutions (x = 0.97, 0.95, 0. 90) were prepared, adopting LuNi2B2C-type structure. AC-susceptibility and magnetization studies show that Dy substitution by U (decreasing x) affects the superconducting (SC) and antiferromagnetic (AF) transitions of DyNi2B2 C [initial magnetic order at 16.3(3) K, AF at 10.4(3) K, SC at congruent to 6 K], lowering the magnetic transition temperatures, with AF order disappe aring for x < 0.90. There is no clear evidence for a SC state in the materi als down to the lower-temperature limit of 2 K. (C) 2000 Elsevier Science B .V. All rights reserved.