1H NMR on (Nix Mn1-x)3 [Cr(CN)6 ]2 · nH2 O

M. Bokor, K. Tompa, L.F. Kiss Institute for Solid State Physics and Optics, HAS, P.O. Box 49, 1525 Budapest, Hungary M. Zentková, A. Zentko, M. Mihalik, S. Maťaš and Z. Mitróová Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovak Republic

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Received: 9 07 2007;

We report on 1H NMR of (Nix Mn1-x) 3[Cr(CN)6 ]2 · 15H2 O hexacyanochromates, where x changes from 0 to 1. The decay time constants of the free induction decay signals described by an effective spin-spin relaxation time T2eff obtained from M(t) = M0 exp(t/T2eff) decrease as the local magnetic moments increase produced by the magnetic transition metal ions at the sites of the resonant 1H nuclei. The recovery of the magnetization in the spin-lattice relaxation time (T1 ) experiments was single-exponential.

DOI: 10.12693/APhysPolA.113.485 PACS numbers: 72.80.Ga, 75.50.Xx, 76.60.Lz