Study of Magnetic Superexchange in diluted Systems
نویسنده
چکیده
model the covalency-mixing parameters, λσ and λπ, the electron spin transfer coefficients, ƒi (i=σ, π, s ), and the total charge, C, transferred from ligand to the chromium ions, are evaluated. The variation of bσσ and bσπ with x agree with the passage of the system from ferromagnetic to antiferromagnetic order. For the compound presenting re-entrant behaviour ( 58 . 0 45 . 0 ≤ ≤ x ), fs exhibits anomalous. The increasing in C with x is consistent with the expected decrease in covalency of the non magnetic cation in tetrahedral site.
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