Magnetic susceptibility and exchange coupling in the mineral ardennite

A. N. Thorpe; F. E. Senftle; G. Donnay

doi:10.1016/0022-3697(69)90149-8

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Magnetic susceptibility and exchange coupling in the mineral ardennite

A. N. Thorpe·F. E. Senftle·G. Donnay

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Abstract

Ardennite, a rare silicate mineral, contains about 19 wt.% manganese. Some of the manganese atoms are in positions which are close enough to allow negative exchange and hence a reduction of the total magnetic susceptibility. It is shown that the susceptibility can be accounted for approximately by the treatment of Earnshaw and Lewis (1958) for S = 5 2 "> S =52 and a Hamiltonian H = −2 g μ H b −2 JS 1 · S 2 .

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A. N. Thorpe, F. E. Senftle, G. Donnay. 1969. Magnetic susceptibility and exchange coupling in the mineral ardennite. https://doi.org/10.1016/0022-3697(69)90149-8

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