Artículo
Searching for a Quantum Critical Point in Rh doped ferromagnetic Ce2.15Pd1.95In0.9
Fecha de publicación:
01/2012
Editorial:
IOP Publishing
Revista:
Journal of Physics: Conference Series
ISSN:
1742-6596
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Low temperature magnetic and thermal ( C m ) properties of the ferromagnetic (FM) alloys Ce 2.15 (Pd 1− x Rh x ) 1.95 In 0.9 were investigated in order to explore the possibility for tuning towards a quantum critical point (QCP) by doping Pd with Rh. As expected, the magnetic transition decreases from T = 4.1K at x = 0 with increasing Rh concentration. However, the phase boundary splits into two transitions, the upper being antiferromagnetic (AF) whereas the lower FM. The AF phase boundary extrapolates to T N = 0 for x cr ≈ 0.65 whereas the first order FM transition vanishes at x ≈ 0.3. The quantum critical character of the T N → 0 point is inferred from the divergent T dependence of the tail of C m /T observed in the x = 0.5 and 0.55 alloys, and the tendency to saturation of the maximum of C m ( T N )/ T currently observed in exemplary Ce compounds when T N → 0. Beyond the critical concentration the unit cell volume deviates from the Vegard´s law in coincidence with a strong increase of the Kondo temperature.
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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
Sereni, Julian Gustavo Renzo; Giovannini, M.; Gomez Berisso, Mariano; Saccone, A.; Searching for a Quantum Critical Point in Rh doped ferromagnetic Ce2.15Pd1.95In0.9; IOP Publishing; Journal of Physics: Conference Series; 391; 1; 1-2012; 12062-12066
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