MAGNETISM AND EPR SPECTRA OF Mn +2Cu2+ FERRIMAGNETIC CHAINS

Olivier Guillou , D. Gatteschi , C. Zanchini , R. Sessoli , O. Kahn , M. Verdaguer , Y. Pei

Single crystal EPR spectra of the heterobimetallic chain compounds MnCu (pba) (H2O)3 .2H2O (1) and MnCu (pbaOH) (H2O)3(2) where pba is 1,3-propylene-bis(oxamato) and pbaOH is 2-hydroxy-1,3-propylene-bis(oxamato) have been recorded in the 4.2-300 K temperature range. The angular dependence of the linewidths was interpreted in terms of dipolar interactions. The anisotropic shifts in the resonance fields observed at low temperature, due to short range order effects, are in agreement with the magnetic anisotropy measurements. EPR and magnetic data allow to propose the spin distribution in both compounds.

Domaines: Articles anciens

Olivier Guillou, D. Gatteschi, C. Zanchini, R. Sessoli, O. Kahn, et al.. MAGNETISM AND EPR SPECTRA OF Mn +2Cu2+ FERRIMAGNETIC CHAINS. Journal de Physique Colloques, 1988, 49 (C8), pp.C8-857-C8-858. ⟨10.1051/jphyscol:19888387⟩. ⟨jpa-00228573⟩