Mössbauer study of Fe-base amorphous ultrafine particles prepared by chemical reduction

J. Saida; M. Ghafari; Y. Nakamura; A. Inoue; T. Masumoto

doi:10.1016/0168-583X(93)95188-B

Mössbauer study of Fe-base amorphous ultrafine particles prepared by chemical reduction

J. Saida, M. Ghafari, Y. Nakamura, A. Inoue, T. Masumoto

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Abstract

Mössbauer spectroscopy was applied for the structure analysis of chemically synthesized FeB and FeM-B (M = Co, Ni) particles using KBH₄as a reducing agent. The structure of FeB particles depends on the mixing molar ratio of KBH₄to Fe²⁺ ions,M_r. The particles consist of amorphous FeB alloys and Fe³⁺oxides for M_R≥ 10.0, while amorphous FeB alloys, Fe³⁺ oxides and the α-phase for M_R < 10.0. The distribution of magnetic hyperfine field P(B_hf) also changes with M_R. The average value of B_hfchanges discontinuously around M_R = 10.0. The substitution of Fe by Ni atoms has a drastic effect on the Mössbauer parameters, indicating the change of the hyperfine field.

Original language	English
Pages (from-to)	223-224
Number of pages	2
Journal	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume	76
Issue number	1-4
DOIs	https://doi.org/10.1016/0168-583X(93)95188-B
Publication status	Published - 1993 Apr 4

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10.1016/0168-583X(93)95188-B

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title = "M{\"o}ssbauer study of Fe-base amorphous ultrafine particles prepared by chemical reduction",

abstract = "M{\"o}ssbauer spectroscopy was applied for the structure analysis of chemically synthesized FeB and FeM-B (M = Co, Ni) particles using KBH4as a reducing agent. The structure of FeB particles depends on the mixing molar ratio of KBH4to Fe2+ ions,Mr. The particles consist of amorphous FeB alloys and Fe3+oxides for MR≥ 10.0, while amorphous FeB alloys, Fe3+ oxides and the α-phase for MR < 10.0. The distribution of magnetic hyperfine field P(Bhf) also changes with MR. The average value of Bhfchanges discontinuously around MR = 10.0. The substitution of Fe by Ni atoms has a drastic effect on the M{\"o}ssbauer parameters, indicating the change of the hyperfine field.",

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T1 - Mössbauer study of Fe-base amorphous ultrafine particles prepared by chemical reduction

AU - Saida, J.

AU - Ghafari, M.

AU - Nakamura, Y.

AU - Inoue, A.

AU - Masumoto, T.

PY - 1993/4/4

Y1 - 1993/4/4

N2 - Mössbauer spectroscopy was applied for the structure analysis of chemically synthesized FeB and FeM-B (M = Co, Ni) particles using KBH4as a reducing agent. The structure of FeB particles depends on the mixing molar ratio of KBH4to Fe2+ ions,Mr. The particles consist of amorphous FeB alloys and Fe3+oxides for MR≥ 10.0, while amorphous FeB alloys, Fe3+ oxides and the α-phase for MR < 10.0. The distribution of magnetic hyperfine field P(Bhf) also changes with MR. The average value of Bhfchanges discontinuously around MR = 10.0. The substitution of Fe by Ni atoms has a drastic effect on the Mössbauer parameters, indicating the change of the hyperfine field.

AB - Mössbauer spectroscopy was applied for the structure analysis of chemically synthesized FeB and FeM-B (M = Co, Ni) particles using KBH4as a reducing agent. The structure of FeB particles depends on the mixing molar ratio of KBH4to Fe2+ ions,Mr. The particles consist of amorphous FeB alloys and Fe3+oxides for MR≥ 10.0, while amorphous FeB alloys, Fe3+ oxides and the α-phase for MR < 10.0. The distribution of magnetic hyperfine field P(Bhf) also changes with MR. The average value of Bhfchanges discontinuously around MR = 10.0. The substitution of Fe by Ni atoms has a drastic effect on the Mössbauer parameters, indicating the change of the hyperfine field.

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ER -

Mössbauer study of Fe-base amorphous ultrafine particles prepared by chemical reduction

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