Development of high-coercivity state in melt-spun Fe41Pd41B8Si6P4 ribbons

Oksana Aleksandrovna Golovnia; Nina Ivanovna Vlasova; Aleksandr Gervasievich Popov; Vasiliy Semenovich Gaviko; Vladimir Vladimirovich Popov; Andrey Vladimirovich Protasov; Arti Kashyap

doi:10.1007/s12598-019-01256-9

Development of high-coercivity state in melt-spun Fe₄₁Pd₄₁B₈Si₆P₄ ribbons

Oksana Aleksandrovna Golovnia, Nina Ivanovna Vlasova, Aleksandr Gervasievich Popov, Vasiliy Semenovich Gaviko, Vladimir Vladimirovich Popov, Andrey Vladimirovich Protasov, Arti Kashyap

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

Abstract

The phase transformation and magnetic hysteresis properties of melt-spun Fe₄₁Pd₄₁B₈Si₆P₄ ribbons subjected to the annealing at temperatures of 500–550 °C were studied after holding for 0.1–60.0 h by transmission electron microscopy (TEM), X-ray diffraction (XRD) and thermomagnetic analysis. The additions of P, B and Si to the FePd alloy allowed us to achieve the coercivity of 124 kA·m⁻¹, which is 2.6 times higher than that of the melt-spun ribbons of the binary equiatomic FePd alloy. The high-coercivity Fe₄₁Pd₄₁B₈Si₆P₄ alloy is nanocrystalline and is composed of the ordered L1₀-phase grains approximately 40 nm in size and inclusions of the Fe₂(P, B) and Pd₂(Si, B) phases. The coercivity kinetics is controlled by the phase transformation which can be divided into three stages: transformation from the bcc structure to nanosized regions of the fcc and Fe₂P phases; transformation from the fcc to L1₀ nanosized regions with somewhat different degrees of tetragonality and their ordering; and extensive growth of the weight fraction of L1₀ phase from the fcc nanosized regions. P and B atoms occupy interstitial sites in the iron plane of L1₀ lattice, thus decreasing its Curie temperature (T_C).

Original language	English
Pages (from-to)	76-83
Number of pages	8
Journal	Rare Metals
Volume	39
Issue number	1
DOIs	https://doi.org/10.1007/s12598-019-01256-9
State	Published - 1 Jan 2020
Externally published	Yes

Keywords

Fe–Pd–P–B–Si
L1
Magnetic measurements
Melt spinning
Nanostructured materials
Phase transformation

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Physical and Theoretical Chemistry
Metals and Alloys
Materials Chemistry

Access to Document

10.1007/s12598-019-01256-9

Cite this

@article{2930ec7f6e1b48dfb6aab608e651a850,

title = "Development of high-coercivity state in melt-spun Fe41Pd41B8Si6P4 ribbons",

abstract = "The phase transformation and magnetic hysteresis properties of melt-spun Fe41Pd41B8Si6P4 ribbons subjected to the annealing at temperatures of 500–550 °C were studied after holding for 0.1–60.0 h by transmission electron microscopy (TEM), X-ray diffraction (XRD) and thermomagnetic analysis. The additions of P, B and Si to the FePd alloy allowed us to achieve the coercivity of 124 kA·m−1, which is 2.6 times higher than that of the melt-spun ribbons of the binary equiatomic FePd alloy. The high-coercivity Fe41Pd41B8Si6P4 alloy is nanocrystalline and is composed of the ordered L10-phase grains approximately 40 nm in size and inclusions of the Fe2(P, B) and Pd2(Si, B) phases. The coercivity kinetics is controlled by the phase transformation which can be divided into three stages: transformation from the bcc structure to nanosized regions of the fcc and Fe2P phases; transformation from the fcc to L10 nanosized regions with somewhat different degrees of tetragonality and their ordering; and extensive growth of the weight fraction of L10 phase from the fcc nanosized regions. P and B atoms occupy interstitial sites in the iron plane of L10 lattice, thus decreasing its Curie temperature (TC).",

keywords = "Fe–Pd–P–B–Si, L1, Magnetic measurements, Melt spinning, Nanostructured materials, Phase transformation",

author = "Golovnia, \{Oksana Aleksandrovna\} and Vlasova, \{Nina Ivanovna\} and Popov, \{Aleksandr Gervasievich\} and Gaviko, \{Vasiliy Semenovich\} and Popov, \{Vladimir Vladimirovich\} and Protasov, \{Andrey Vladimirovich\} and Arti Kashyap",

note = "Publisher Copyright: {\textcopyright} 2019, The Nonferrous Metals Society of China and Springer-Verlag GmbH Germany, part of Springer Nature.",

year = "2020",

month = jan,

day = "1",

doi = "10.1007/s12598-019-01256-9",

language = "الإنجليزيّة",

volume = "39",

pages = "76--83",

journal = "Rare Metals",

issn = "1001-0521",

number = "1",

}

TY - JOUR

T1 - Development of high-coercivity state in melt-spun Fe41Pd41B8Si6P4 ribbons

AU - Golovnia, Oksana Aleksandrovna

AU - Vlasova, Nina Ivanovna

AU - Popov, Aleksandr Gervasievich

AU - Gaviko, Vasiliy Semenovich

AU - Popov, Vladimir Vladimirovich

AU - Protasov, Andrey Vladimirovich

AU - Kashyap, Arti

PY - 2020/1/1

Y1 - 2020/1/1

N2 - The phase transformation and magnetic hysteresis properties of melt-spun Fe41Pd41B8Si6P4 ribbons subjected to the annealing at temperatures of 500–550 °C were studied after holding for 0.1–60.0 h by transmission electron microscopy (TEM), X-ray diffraction (XRD) and thermomagnetic analysis. The additions of P, B and Si to the FePd alloy allowed us to achieve the coercivity of 124 kA·m−1, which is 2.6 times higher than that of the melt-spun ribbons of the binary equiatomic FePd alloy. The high-coercivity Fe41Pd41B8Si6P4 alloy is nanocrystalline and is composed of the ordered L10-phase grains approximately 40 nm in size and inclusions of the Fe2(P, B) and Pd2(Si, B) phases. The coercivity kinetics is controlled by the phase transformation which can be divided into three stages: transformation from the bcc structure to nanosized regions of the fcc and Fe2P phases; transformation from the fcc to L10 nanosized regions with somewhat different degrees of tetragonality and their ordering; and extensive growth of the weight fraction of L10 phase from the fcc nanosized regions. P and B atoms occupy interstitial sites in the iron plane of L10 lattice, thus decreasing its Curie temperature (TC).

AB - The phase transformation and magnetic hysteresis properties of melt-spun Fe41Pd41B8Si6P4 ribbons subjected to the annealing at temperatures of 500–550 °C were studied after holding for 0.1–60.0 h by transmission electron microscopy (TEM), X-ray diffraction (XRD) and thermomagnetic analysis. The additions of P, B and Si to the FePd alloy allowed us to achieve the coercivity of 124 kA·m−1, which is 2.6 times higher than that of the melt-spun ribbons of the binary equiatomic FePd alloy. The high-coercivity Fe41Pd41B8Si6P4 alloy is nanocrystalline and is composed of the ordered L10-phase grains approximately 40 nm in size and inclusions of the Fe2(P, B) and Pd2(Si, B) phases. The coercivity kinetics is controlled by the phase transformation which can be divided into three stages: transformation from the bcc structure to nanosized regions of the fcc and Fe2P phases; transformation from the fcc to L10 nanosized regions with somewhat different degrees of tetragonality and their ordering; and extensive growth of the weight fraction of L10 phase from the fcc nanosized regions. P and B atoms occupy interstitial sites in the iron plane of L10 lattice, thus decreasing its Curie temperature (TC).

KW - Fe–Pd–P–B–Si

KW - L1

KW - Magnetic measurements

KW - Melt spinning

KW - Nanostructured materials

KW - Phase transformation

UR - http://www.scopus.com/inward/record.url?scp=85065244915&partnerID=8YFLogxK

U2 - 10.1007/s12598-019-01256-9

DO - 10.1007/s12598-019-01256-9

M3 - مقالة

SN - 1001-0521

VL - 39

SP - 76

EP - 83

JO - Rare Metals

JF - Rare Metals

IS - 1

ER -