EuNiGe 3 , an anisotropic antiferromagnet - CEA - Commissariat à l’énergie atomique et aux énergies alternatives Accéder directement au contenu
Article Dans Une Revue Journal of Physics: Condensed Matter Année : 2014

EuNiGe 3 , an anisotropic antiferromagnet

Résumé

Single crystals of EuNiGe 3 crystallizing in the non-centrosymmetric BaNiSn 3-type structure have been grown using In flux, enabling us to explore the anisotropic magnetic properties which was not possible with previously reported polycrystalline samples. The EuNiGe 3 single crystalline sample is found to order antiferromagnetically at 13.2 K as revealed from the magnetic susceptibility, heat capacity and electrical resistivity data. The low temperature magnetization M(H) is distinctly different for field parallel to ab-plane and c-axis; the ab-plane magnetization varies nearly linearly with field before the occurrence of an induced ferromagnetic phase (spin-flip) at 6.2 Tesla; on the other hand M(H) along the c-axis is accompanied by two metamagnetic transitions followed by a spin-flip at 4.1 T. A model including anisotropic exchange and dipole-dipole interactions reproduces the main features of magnetization plots but falls short of full representation. (H,T) phase diagrams have been constructed for the field applied along the principal directions. From the 151 Eu Mössbauer spectra, we determine that the 13.2 K transition leads to an incommensu-rate antiferromagnetic intermediate phase followed by a transition near 10.5 K to a commensurate antiferromagnetic configuration.
Fichier principal
Vignette du fichier
1402.0094v1.pdf (594.52 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

cea-01377054 , version 1 (06-10-2016)

Identifiants

Citer

A Maurya, Pierre Bonville, A Thamizhavel, S K Dhar. EuNiGe 3 , an anisotropic antiferromagnet. Journal of Physics: Condensed Matter, 2014, 26 (21), pp.216001. ⟨10.1088/0953-8984/26/21/216001⟩. ⟨cea-01377054⟩
232 Consultations
186 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More