Artículo
Strong magnetoelastic effect in CeCo1-xFexSi as Néel order is suppressed
Correa, Víctor Félix
; Villagrán Asiares, Alberto Gaston; Betancourth Giraldo, Diana Maria
; Encina, Sergio
; Pedrazzini, Pablo
; Cornaglia de la Cruz, Pablo Sebastian
; Garcia, Daniel Julio
; Sereni, Julian Gustavo Renzo
; Maiorov, B.; Caroca Canales, N.; Geibel, C.
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Fecha de publicación:
11/2019
Editorial:
American Physical Society
Revista:
Physical Review B
ISSN:
2469-9950
e-ISSN:
2469-9969
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
A very strong magnetoelastic effect in the CeCo1-xFexSi alloys is reported. The strength of the magnetostrictive effect can be tuned upon changing x. The moderate low-temperature linear magnetostriction observed at low Fe concentrations becomes very large (ΔLL16T,2K=3×10-3) around the critical concentration xc≈0.23 at which the long-range antiferromagnetic order vanishes. Upon increasing doping through the nonmagnetic region (x>xc), the magnetostriction strength gradually weakens again. The interplay between magnetic order and the Kondo screening appears to cause an enhanced valence susceptibility slightly changing the Ce ions valence, ultimately triggering the large magnetostriction observed around the critical concentration. Previous studies of the evolution of the lattice parameters with x as well as magnetization and x-ray absorption spectroscopy measurements support this hypothesis.
Palabras clave:
ANTIFERROMAGNETISM
,
KONDO EFFECT
,
MAGNETOSTRICTION
,
RKKY INTERACTION
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Colecciones
Articulos(CCT - PATAGONIA NORTE)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA NORTE
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA NORTE
Citación
Correa, Víctor Félix; Villagrán Asiares, Alberto Gaston; Betancourth Giraldo, Diana Maria; Encina, Sergio; Pedrazzini, Pablo; et al.; Strong magnetoelastic effect in CeCo1-xFexSi as Néel order is suppressed; American Physical Society; Physical Review B; 100; 184409; 11-2019; 1-5
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