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Size-induced superantiferromagnetism with reentrant spin-glass behavior in metallic nanoparticles of TbCu2

Abstract: An unusual 4f-superantiferromagnetic state characterized by simultaneous antiferromagnetic and spin-glass behaviors induced by particle-size reduction is revealed in metallic nanoparticles (?9 nm) of TbCu2. The Néel temperature is 46 K and the glassy freezing is below ?9 K and governed by a critical slowing down process. Neutron diffraction at 1.8 K establishes the superantiferromagnetism. The latter is settled by the nanoparticle moments and the freezing mechanism is provided by the surface spins.

Autoría: Echevarria-Bonet C., Rojas D.P., Espeso J.I., Rodríguez Fernández J., Rodríguez Fernández L., Gorria P., Blanco J.A., Fdez-Gubieda M.L., Bauer E., André G., Fernández Barquín L.,

Fuente: Physical Review B - Condensed Matter and Materials Physics, 2013, 87(18), 180407(R)

Editorial: American Physical Society

Fecha de publicación: 27/05/2013

Nº de páginas: 5

Tipo de publicación: Artículo de Revista

DOI: 10.1103/PhysRevB.87.180407

ISSN: 1098-0121,1550-235X,2469-9950,2469-9969

Proyecto español: MAT2011-27573- C04-01

Url de la publicación: https://doi.org/10.1103/PhysRevB.87.180407

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