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Changes in the 119 Sn‐site hyperfine field of iron induced by substitutional vanadium and chromium
Author(s) -
Dubiel S. M.
Publication year - 1987
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221400120
Subject(s) - chromium , impurity , vanadium , hyperfine structure , mössbauer spectroscopy , analytical chemistry (journal) , metal , materials science , spectroscopy , chemistry , inorganic chemistry , crystallography , metallurgy , atomic physics , physics , organic chemistry , chromatography , quantum mechanics
Abstract The effect of substitutional vanadium (up to 18 at%) and chromium (in the whole composition range) on the average 119 Sn‐site hf field, H Sn , in metallic iron is investigated using Mössbauer‐effect spectroscopy. From the room temperature measurements for both the impurities it is observed that H Sn falls with increasing impurity content much faster than the corresponding 57 Fe‐site hf field. For chromium H Sn is a nonlinear function of impurity concentration and indicates the following four characteristic ranges: up to x ≈ 10 d H Sn /d x ≈ 390 kOe; for 10 ≦ x ≦ 45 d H Sn /d x ≈ ≈ 11 kOe; for 45 ≦ x ≦ 65 d H Sn /d x ≈ 210 kOe; at x = 72 H Sn ≈ 0 and for x ≧ 72 H Sn increases with x in a nonlinear way. From the 4.2 K measurements for iron–chromium alloys it follows that H Sn 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.