29Si NMR and 69;71Ga NMR/NQR study of the kagomé compound Nd3Ga5SiO14

A. Zorko (1, 2) , F. Bert (2) , Pierre Bordet (3) , Pascal Lejay (4) , P. Mendels (2)

1 IJS - Jozef Stefan Institute [Ljubljana]
2 LPS - Laboratoire de Physique des Solides
3 NEEL - MRS - Matériaux, Rayonnements, Structure
4 NEEL - C2MA - Croissance Cristalline et MicroAnalyse

We report a comprehensive 29Si NMR and 69;71Ga NMR/NQR study of the large- spin magnetically anisotropic kagom¶e compound Nd3Ga5SiO14. We ¯nd a sizable transferred hyper¯ne coupling between the nuclear and electron moments, proving that these nuclei can be utilized as local probes which provide useful information about the magnetic Nd3+ ions. Our results give evidence of unexpectedly broad distributions of local environments on all nuclear sites under investigation, implying also exchange disorder.

Domaines: Electrons fortement corrélés [cond-mat.str-el]

A. Zorko, F. Bert, Pierre Bordet, Pascal Lejay, P. Mendels. 29Si NMR and 69;71Ga NMR/NQR study of the kagomé compound Nd3Ga5SiO14. Journal of Physics: Conference Series, 2009, HIGHLY FRUSTRATED MAGNETISM 2008 (HFM 2008) 7–12 September 2008, Braunschweig, Germany, 145 (1), pp.012006. ⟨10.1088/1742-6596/145/1/012006⟩. ⟨hal-00375665⟩