ISSN:
1434-6036
Schlagwort(e):
PACS. 76.30.Fc Iron group (3d) ions and impurities (Ti-Cu) – 76.60.Es Relaxation effects – 75.30.-m Intrinsic properties of magnetically ordered materials
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Physik
Notizen:
Abstract: EPR and 7Li NMR measurements were performed in the distorted inverse spinel V(LiCu)O4 down to 1.5 K. Anisotropy effects on magnetic resonance spectra due to the Jahn-Teller distortion of the oxygen octahedra surrounding the copper ions are discussed. The estimation of the spin-spin interactions deduced from the EPR-relaxation rate Δ H reveals a situation comparable to the prototypical one-dimensional S = 1/2 Heisenberg antiferromagnet CuGeO3. Approaching three-dimensional antiferromagnetic order ( T N ≈ 2 K) from above, both magnetic relaxation rates, Δ H EPR and 7 (1/ T 1 ), respectively, exhibit nearly the same critical divergence reminding to the onset of three-dimensional order in two-dimensional layered systems.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/s100510170109
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