Structure and magnetic properties of SmCoxTi0.4-1:7 ribbons

Z. Yao; C. B. Jiang

doi:10.1016/j.jmmm.2007.10.021

Structure and magnetic properties of SmCo_xTi_0.4-1:7 ribbons

Z. Yao
, C. B. Jiang^*

^*Corresponding author for this work

School of Materials Science and Engineering

Beihang University

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

16 Scopus citations

Abstract

SmCo_xTi_0.4 (x=6.6, 7.1, 7.6, 8.1) ribbons have been prepared by melt spinning at a wheel speed of 42 m/s, followed by annealing at 750 °C for 2 h. Both as-spun and as-annealed ribbons possess the disordered TbCu7-type (1:7) phase even when the Sm/(Co,Ti) atomic ratio deviates from 1/7. The c/a ratio increases with increasing Co concentration x, but the unit cell volume decreases. The Curie temperatures show above 700 °C, increasing from 707 °C for x=6.6 to 782 °C for x=8.1. The saturation magnetizations increase almost linearly with increasing Co content. The observed magnetic hardening is believed to arise from the high magnetocrystalline anisotropy of the 1:7 phase and the fine nanograin structure. The intrinsic coercivity of 9797 Oe has been obtained in the melt-spun SmCo_7.1Ti_0.4 ribbons.

Original language	English
Pages (from-to)	1073-1077
Number of pages	5
Journal	Journal of Magnetism and Magnetic Materials
Volume	320
Issue number	6
DOIs	https://doi.org/10.1016/j.jmmm.2007.10.021
State	Published - Mar 2008

Keywords

1:7 phase
Coercivity
Nanoscale grain
Permanent magnet
SmCo alloy

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10.1016/j.jmmm.2007.10.021

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@article{7b0f144892f7401d834842501e641946,

title = "Structure and magnetic properties of SmCoxTi0.4-1:7 ribbons",

abstract = "SmCoxTi0.4 (x=6.6, 7.1, 7.6, 8.1) ribbons have been prepared by melt spinning at a wheel speed of 42 m/s, followed by annealing at 750 °C for 2 h. Both as-spun and as-annealed ribbons possess the disordered TbCu7-type (1:7) phase even when the Sm/(Co,Ti) atomic ratio deviates from 1/7. The c/a ratio increases with increasing Co concentration x, but the unit cell volume decreases. The Curie temperatures show above 700 °C, increasing from 707 °C for x=6.6 to 782 °C for x=8.1. The saturation magnetizations increase almost linearly with increasing Co content. The observed magnetic hardening is believed to arise from the high magnetocrystalline anisotropy of the 1:7 phase and the fine nanograin structure. The intrinsic coercivity of 9797 Oe has been obtained in the melt-spun SmCo7.1Ti0.4 ribbons.",

keywords = "1:7 phase, Coercivity, Nanoscale grain, Permanent magnet, SmCo alloy",

author = "Z. Yao and Jiang, \{C. B.\}",

year = "2008",

month = mar,

doi = "10.1016/j.jmmm.2007.10.021",

language = "英语",

volume = "320",

pages = "1073--1077",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier B.V.",

number = "6",

}

TY - JOUR

T1 - Structure and magnetic properties of SmCoxTi0.4-1:7 ribbons

AU - Yao, Z.

AU - Jiang, C. B.

PY - 2008/3

Y1 - 2008/3

N2 - SmCoxTi0.4 (x=6.6, 7.1, 7.6, 8.1) ribbons have been prepared by melt spinning at a wheel speed of 42 m/s, followed by annealing at 750 °C for 2 h. Both as-spun and as-annealed ribbons possess the disordered TbCu7-type (1:7) phase even when the Sm/(Co,Ti) atomic ratio deviates from 1/7. The c/a ratio increases with increasing Co concentration x, but the unit cell volume decreases. The Curie temperatures show above 700 °C, increasing from 707 °C for x=6.6 to 782 °C for x=8.1. The saturation magnetizations increase almost linearly with increasing Co content. The observed magnetic hardening is believed to arise from the high magnetocrystalline anisotropy of the 1:7 phase and the fine nanograin structure. The intrinsic coercivity of 9797 Oe has been obtained in the melt-spun SmCo7.1Ti0.4 ribbons.

AB - SmCoxTi0.4 (x=6.6, 7.1, 7.6, 8.1) ribbons have been prepared by melt spinning at a wheel speed of 42 m/s, followed by annealing at 750 °C for 2 h. Both as-spun and as-annealed ribbons possess the disordered TbCu7-type (1:7) phase even when the Sm/(Co,Ti) atomic ratio deviates from 1/7. The c/a ratio increases with increasing Co concentration x, but the unit cell volume decreases. The Curie temperatures show above 700 °C, increasing from 707 °C for x=6.6 to 782 °C for x=8.1. The saturation magnetizations increase almost linearly with increasing Co content. The observed magnetic hardening is believed to arise from the high magnetocrystalline anisotropy of the 1:7 phase and the fine nanograin structure. The intrinsic coercivity of 9797 Oe has been obtained in the melt-spun SmCo7.1Ti0.4 ribbons.

KW - 1:7 phase

KW - Coercivity

KW - Nanoscale grain

KW - Permanent magnet

KW - SmCo alloy

UR - https://www.scopus.com/pages/publications/39149083082

U2 - 10.1016/j.jmmm.2007.10.021

DO - 10.1016/j.jmmm.2007.10.021

M3 - 文章

AN - SCOPUS:39149083082

SN - 0304-8853

VL - 320

SP - 1073

EP - 1077

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 6

ER -

Structure and magnetic properties of SmCo_xTi_0.4-1:7 ribbons

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Keywords

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