Mössbauer study of amorphous and nanocrystalline Fe-Nb-B alloys

K. Suzuki; J. M. Cadogan; V. Sahajwalla; A. Inoue; T. Masumoto

Mössbauer study of amorphous and nanocrystalline Fe-Nb-B alloys

K. Suzuki
, J. M. Cadogan
, V. Sahajwalla
, A. Inoue
, T. Masumoto

Research output: Contribution to journal › Article › Research › peer-review

Abstract

Curie temperature (T_c) and hyperfine interactions of the amorphous phase in melt-quenched Fe_86-xNb_xB₁₄ (x=0, 2, 4 and 6) alloys in an as quenched state and after primary crystallisation were studied by means of thermo-magnetic analysis and ⁵⁷Fe Mössbauer spectroscopy. T_c of the amorphous phase increased with the enrichment of B during primary crystallisation. The T_c decreased with the Nb content x and the hyperfine-field distribution of the residual amorphous phase for the x=6 sample after primary crystallisation showed the presence of a nonmagnetic component. These results suggest that B promotes the intergranular magnetic coupling whereas Nb reduces it. Since Nb plays an important role in the nano-structural formation, the combination of B and Nb is essential for obtaining the nano-structure with good magnetic softness.

Original language	English
Pages (from-to)	707-712
Number of pages	6
Journal	Materials Science Forum
Volume	225-227
Issue number	PART 2
Publication status	Published - 1 Dec 1996
Externally published	Yes

Keywords

Amorphous Phase
Crystallisation
Curie Temperature
Fe-B
Fe-Nb-B
Mössbauer Effect
Nanocrystalline Soft Magnetic Alloys

Cite this

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title = "M{\"o}ssbauer study of amorphous and nanocrystalline Fe-Nb-B alloys",

abstract = "Curie temperature (Tc) and hyperfine interactions of the amorphous phase in melt-quenched Fe86-xNbxB14 (x=0, 2, 4 and 6) alloys in an as quenched state and after primary crystallisation were studied by means of thermo-magnetic analysis and 57Fe M{\"o}ssbauer spectroscopy. Tc of the amorphous phase increased with the enrichment of B during primary crystallisation. The Tc decreased with the Nb content x and the hyperfine-field distribution of the residual amorphous phase for the x=6 sample after primary crystallisation showed the presence of a nonmagnetic component. These results suggest that B promotes the intergranular magnetic coupling whereas Nb reduces it. Since Nb plays an important role in the nano-structural formation, the combination of B and Nb is essential for obtaining the nano-structure with good magnetic softness.",

keywords = "Amorphous Phase, Crystallisation, Curie Temperature, Fe-B, Fe-Nb-B, M{\"o}ssbauer Effect, Nanocrystalline Soft Magnetic Alloys",

author = "K. Suzuki and Cadogan, \{J. M.\} and V. Sahajwalla and A. Inoue and T. Masumoto",

year = "1996",

month = dec,

day = "1",

language = "English",

volume = "225-227",

pages = "707--712",

journal = "Materials Science Forum",

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TY - JOUR

T1 - Mössbauer study of amorphous and nanocrystalline Fe-Nb-B alloys

AU - Suzuki, K.

AU - Cadogan, J. M.

AU - Sahajwalla, V.

AU - Inoue, A.

AU - Masumoto, T.

PY - 1996/12/1

Y1 - 1996/12/1

N2 - Curie temperature (Tc) and hyperfine interactions of the amorphous phase in melt-quenched Fe86-xNbxB14 (x=0, 2, 4 and 6) alloys in an as quenched state and after primary crystallisation were studied by means of thermo-magnetic analysis and 57Fe Mössbauer spectroscopy. Tc of the amorphous phase increased with the enrichment of B during primary crystallisation. The Tc decreased with the Nb content x and the hyperfine-field distribution of the residual amorphous phase for the x=6 sample after primary crystallisation showed the presence of a nonmagnetic component. These results suggest that B promotes the intergranular magnetic coupling whereas Nb reduces it. Since Nb plays an important role in the nano-structural formation, the combination of B and Nb is essential for obtaining the nano-structure with good magnetic softness.

AB - Curie temperature (Tc) and hyperfine interactions of the amorphous phase in melt-quenched Fe86-xNbxB14 (x=0, 2, 4 and 6) alloys in an as quenched state and after primary crystallisation were studied by means of thermo-magnetic analysis and 57Fe Mössbauer spectroscopy. Tc of the amorphous phase increased with the enrichment of B during primary crystallisation. The Tc decreased with the Nb content x and the hyperfine-field distribution of the residual amorphous phase for the x=6 sample after primary crystallisation showed the presence of a nonmagnetic component. These results suggest that B promotes the intergranular magnetic coupling whereas Nb reduces it. Since Nb plays an important role in the nano-structural formation, the combination of B and Nb is essential for obtaining the nano-structure with good magnetic softness.

KW - Amorphous Phase

KW - Crystallisation

KW - Curie Temperature

KW - Fe-B

KW - Fe-Nb-B

KW - Mössbauer Effect

KW - Nanocrystalline Soft Magnetic Alloys

UR - https://www.scopus.com/pages/publications/0030386316

M3 - Article

AN - SCOPUS:0030386316

SN - 0255-5476

VL - 225-227

SP - 707

EP - 712

JO - Materials Science Forum

JF - Materials Science Forum

IS - PART 2

ER -

Mössbauer study of amorphous and nanocrystalline Fe-Nb-B alloys

Abstract

Keywords

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