Defect-induced room-temperature ferromagnetism in single-walled carbon nanotubes

Do Wan Kim; Kyu Won Lee; Cheol Eui Lee

doi:10.1016/j.jmmm.2018.04.033

Defect-induced room-temperature ferromagnetism in single-walled carbon nanotubes

Do Wan Kim, Kyu Won Lee, Cheol Eui Lee

Division of System Semiconductor

Korea University

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

8 Scopus citations

Abstract

Room-temperature ferromagnetism in single-walled carbon nanotubes (SWNTs) was observed and investigated in this work. Sizeable magnetization was observed in SWNTs aged in air, further increasing by hydrothermal treatment. The magnetic moment appears to arise from a spin-1 species in the pristine sample and from a spin-3/2 species in the hydrothermally treated samples. The spin-1 state may be attributed to the carbon vacancies, whereas the spin-3/2 state may be attributed to hydrogen adsorbed to the carbon vacancies by the hydrothermal treatment.

Original language	English
Pages (from-to)	397-400
Number of pages	4
Journal	Journal of Magnetism and Magnetic Materials
Volume	460
DOIs	https://doi.org/10.1016/j.jmmm.2018.04.033
State	Published - 15 Aug 2018

Keywords

Defects
Room-temperature ferromagnetism
Single-walled carbon nanotubes

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10.1016/j.jmmm.2018.04.033

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title = "Defect-induced room-temperature ferromagnetism in single-walled carbon nanotubes",

abstract = "Room-temperature ferromagnetism in single-walled carbon nanotubes (SWNTs) was observed and investigated in this work. Sizeable magnetization was observed in SWNTs aged in air, further increasing by hydrothermal treatment. The magnetic moment appears to arise from a spin-1 species in the pristine sample and from a spin-3/2 species in the hydrothermally treated samples. The spin-1 state may be attributed to the carbon vacancies, whereas the spin-3/2 state may be attributed to hydrogen adsorbed to the carbon vacancies by the hydrothermal treatment.",

keywords = "Defects, Room-temperature ferromagnetism, Single-walled carbon nanotubes",

author = "Kim, {Do Wan} and Lee, {Kyu Won} and Lee, {Cheol Eui}",

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year = "2018",

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doi = "10.1016/j.jmmm.2018.04.033",

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T1 - Defect-induced room-temperature ferromagnetism in single-walled carbon nanotubes

AU - Kim, Do Wan

AU - Lee, Kyu Won

AU - Lee, Cheol Eui

PY - 2018/8/15

Y1 - 2018/8/15

N2 - Room-temperature ferromagnetism in single-walled carbon nanotubes (SWNTs) was observed and investigated in this work. Sizeable magnetization was observed in SWNTs aged in air, further increasing by hydrothermal treatment. The magnetic moment appears to arise from a spin-1 species in the pristine sample and from a spin-3/2 species in the hydrothermally treated samples. The spin-1 state may be attributed to the carbon vacancies, whereas the spin-3/2 state may be attributed to hydrogen adsorbed to the carbon vacancies by the hydrothermal treatment.

AB - Room-temperature ferromagnetism in single-walled carbon nanotubes (SWNTs) was observed and investigated in this work. Sizeable magnetization was observed in SWNTs aged in air, further increasing by hydrothermal treatment. The magnetic moment appears to arise from a spin-1 species in the pristine sample and from a spin-3/2 species in the hydrothermally treated samples. The spin-1 state may be attributed to the carbon vacancies, whereas the spin-3/2 state may be attributed to hydrogen adsorbed to the carbon vacancies by the hydrothermal treatment.

KW - Defects

KW - Room-temperature ferromagnetism

KW - Single-walled carbon nanotubes

UR - http://www.scopus.com/inward/record.url?scp=85045640234&partnerID=8YFLogxK

U2 - 10.1016/j.jmmm.2018.04.033

DO - 10.1016/j.jmmm.2018.04.033

M3 - Article

AN - SCOPUS:85045640234

SN - 0304-8853

VL - 460

SP - 397

EP - 400

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

ER -

Defect-induced room-temperature ferromagnetism in single-walled carbon nanotubes

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Keywords

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