Abstract
AbstractThe effect of substitutional vanadium (up to 18 at%) and chromium (in the whole composition range) on the average 119Sn‐site hf field, HSn, in metallic iron is investigated using Mössbauer‐effect spectroscopy. From the room temperature measurements for both the impurities it is observed that HSn falls with increasing impurity content much faster than the corresponding 57Fe‐site hf field. For chromium HSn is a nonlinear function of impurity concentration and indicates the following four characteristic ranges: up to x ≈ 10 dHSn/dx ≈ 390 kOe; for 10 ≦ x ≦ 45 dHSn/dx ≈ ≈ 11 kOe; for 45 ≦ x ≦ 65 dHSn/dx ≈ 210 kOe; at x = 72 HSn ≈ 0 and for x ≧ 72 HSn increases with x in a nonlinear way. From the 4.2 K measurements for iron–chromium alloys it follows that HSn passes through a minimum of 27 kOe at x = 83, but it does not compensate completely. This concentration coincides with the spin‐glass state concentrations x = 81 to 84.
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