Cross-relaxation and phonon bottleneck effects on magnetization dynamics in LiYF4:Ho3+ - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2006

Cross-relaxation and phonon bottleneck effects on magnetization dynamics in LiYF4:Ho3+

Résumé

Frequency and dc magnetic field dependences of dynamic susceptibility in diluted paramagnets LiYF$_4$:Ho$^{3+}$ have been measured at liquid helium temperatures in the ac and dc magnetic fields parallel to the symmetry axis of a tetragonal crystal lattice. Experimental data are analyzed in the framework of microscopic theory of relaxation rates in the manifold of 24 electron-nuclear sublevels of the lowest non-Kramers doublet and the first excited singlet in the Ho$^{3+}$ ground multiplet $^5I_8$ split by the crystal field of S$_4$ symmetry. The one-phonon transition probabilities were computed using electron-phonon coupling constants calculated in the framework of exchange charge model and were checked by optical piezospectroscopic measurements. The specific features observed in field dependences of the in- and out-of-phase susceptibilities (humps and dips, respectively) at the crossings (anti-crossings) of the electron-nuclear sublevels are well reproduced by simulations when the phonon bottleneck effect and the cross-spin relaxation are taken into account.
Fichier principal
Vignette du fichier
postreferee.pdf (1.12 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-00421626 , version 1 (02-10-2009)

Identifiants

Citer

Sylvain Bertaina, B. Barbara, R. Giraud, Malkin B.Z., Vanuynin M.V., et al.. Cross-relaxation and phonon bottleneck effects on magnetization dynamics in LiYF4:Ho3+. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2006, 73, pp.184421. ⟨10.1103/PhysRevB.74.184421⟩. ⟨hal-00421626⟩

Collections

CNRS
68 Consultations
125 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More