SUPEREXCHANGE PATHS INVOLVING TWO OR MORE LIGANDS FROM E. P. R. PAIR MEASUREMENTS OF Nd3+ IONS BEYOND THE FIRST NEIGHBOUR SHELL IN LaCl3 AND LaBr3

J. Baker , D. Marsh

From the E. P. R. pair spectra of Nd3+ ions we have been able to measure the interactions of the second shell of neighbours (3 n-7 n) in LaCl3 and LaBr3. These measurements yield non-dipolar interactions of up to 50 % of the dipolar contribution. The non-dipolar interaction is attributable to superexchange and its magnitude depends more on the detailed nature of the particular ligand superexchange path than on the lenght of the path.

Domaines: Articles anciens

J. Baker, D. Marsh. SUPEREXCHANGE PATHS INVOLVING TWO OR MORE LIGANDS FROM E. P. R. PAIR MEASUREMENTS OF Nd3+ IONS BEYOND THE FIRST NEIGHBOUR SHELL IN LaCl3 AND LaBr3. Journal de Physique Colloques, 1971, 32 (C1), pp.C1-948-C1-949. ⟨10.1051/jphyscol:19711340⟩. ⟨jpa-00214375⟩