Electric-field control of ferromagnetism in a Co-Fe-Ta-B amorphous alloy

Yingqi Zhang; Shaofan Zhao; Cheng Song; Wenjian Liu; Kefu Yao; Na Chen

doi:10.1016/j.matdes.2018.01.046

Electric-field control of ferromagnetism in a Co-Fe-Ta-B amorphous alloy

Yingqi Zhang
, Shaofan Zhao
, Cheng Song
, Wenjian Liu
, Kefu Yao
, Na Chen

Tsinghua University
Qian Xuesen Laboratory of Space Technology

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

6 Scopus citations

Abstract

We report the formation of a ferromagnetic Co_55.0Fe_24.5Ta_0.1B_20.4 amorphous alloy by magnetron sputtering, which exhibits positive magnetoresistance without saturation even in very high magnetic fields. This suggests that the s-like electrons responsible for the electrical conduction are spin-polarized through s-d hybridization. Owing to the electromagnetic interplay of the spin-polarized conduction electrons with the local magnetic moments, the electric-field control of room-temperature ferromagnetism is realized in the amorphous alloy. Our results offer insights for exploring the multi-functionalities of ferromagnetic amorphous alloys and extending their applications to a wide variety of electronics including magnetic tunnel junctions and compact disks.

Original language	English
Pages (from-to)	65-71
Number of pages	7
Journal	Materials and Design
Volume	143
DOIs	https://doi.org/10.1016/j.matdes.2018.01.046
State	Published - 5 Apr 2018
Externally published	Yes

Keywords

Ferromagnetic amorphous alloys
Magnetic properties
Magnetoresistance
Voltage control of magnetism

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10.1016/j.matdes.2018.01.046

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title = "Electric-field control of ferromagnetism in a Co-Fe-Ta-B amorphous alloy",

abstract = "We report the formation of a ferromagnetic Co55.0Fe24.5Ta0.1B20.4 amorphous alloy by magnetron sputtering, which exhibits positive magnetoresistance without saturation even in very high magnetic fields. This suggests that the s-like electrons responsible for the electrical conduction are spin-polarized through s-d hybridization. Owing to the electromagnetic interplay of the spin-polarized conduction electrons with the local magnetic moments, the electric-field control of room-temperature ferromagnetism is realized in the amorphous alloy. Our results offer insights for exploring the multi-functionalities of ferromagnetic amorphous alloys and extending their applications to a wide variety of electronics including magnetic tunnel junctions and compact disks.",

keywords = "Ferromagnetic amorphous alloys, Magnetic properties, Magnetoresistance, Voltage control of magnetism",

author = "Yingqi Zhang and Shaofan Zhao and Cheng Song and Wenjian Liu and Kefu Yao and Na Chen",

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year = "2018",

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doi = "10.1016/j.matdes.2018.01.046",

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TY - JOUR

T1 - Electric-field control of ferromagnetism in a Co-Fe-Ta-B amorphous alloy

AU - Zhang, Yingqi

AU - Zhao, Shaofan

AU - Song, Cheng

AU - Liu, Wenjian

AU - Yao, Kefu

AU - Chen, Na

PY - 2018/4/5

Y1 - 2018/4/5

N2 - We report the formation of a ferromagnetic Co55.0Fe24.5Ta0.1B20.4 amorphous alloy by magnetron sputtering, which exhibits positive magnetoresistance without saturation even in very high magnetic fields. This suggests that the s-like electrons responsible for the electrical conduction are spin-polarized through s-d hybridization. Owing to the electromagnetic interplay of the spin-polarized conduction electrons with the local magnetic moments, the electric-field control of room-temperature ferromagnetism is realized in the amorphous alloy. Our results offer insights for exploring the multi-functionalities of ferromagnetic amorphous alloys and extending their applications to a wide variety of electronics including magnetic tunnel junctions and compact disks.

AB - We report the formation of a ferromagnetic Co55.0Fe24.5Ta0.1B20.4 amorphous alloy by magnetron sputtering, which exhibits positive magnetoresistance without saturation even in very high magnetic fields. This suggests that the s-like electrons responsible for the electrical conduction are spin-polarized through s-d hybridization. Owing to the electromagnetic interplay of the spin-polarized conduction electrons with the local magnetic moments, the electric-field control of room-temperature ferromagnetism is realized in the amorphous alloy. Our results offer insights for exploring the multi-functionalities of ferromagnetic amorphous alloys and extending their applications to a wide variety of electronics including magnetic tunnel junctions and compact disks.

KW - Ferromagnetic amorphous alloys

KW - Magnetic properties

KW - Magnetoresistance

KW - Voltage control of magnetism

UR - https://www.scopus.com/pages/publications/85041477651

U2 - 10.1016/j.matdes.2018.01.046

DO - 10.1016/j.matdes.2018.01.046

M3 - 文章

AN - SCOPUS:85041477651

SN - 0264-1275

VL - 143

SP - 65

EP - 71

JO - Materials and Design

JF - Materials and Design

ER -

Electric-field control of ferromagnetism in a Co-Fe-Ta-B amorphous alloy

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Keywords

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