Room-temperature ferromagnetism in hydrothermally treated fullerene

Do Wan Kim; Kyu Won Lee; Won Koo Park; Cheol Eui Lee

doi:10.1016/j.physe.2020.114540

Room-temperature ferromagnetism in hydrothermally treated fullerene

Do Wan Kim, Kyu Won Lee, Won Koo Park, Cheol Eui Lee

Department of Physics

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

Abstract

We have studied the effects of hydrothermal treatment on fullerene (C₆₀) by means of the magnetization and ferromagnetic resonance (FMR) measurements. Room-temperature ferromagnetism was observed in hydrothermally treated fullerene by the magnetization measurements, and a prominent FMR signal was also detected. The magnetization curves were analyzed by employing ferromagnetic and paramagnetic contributions. Thus, a spin-1/2 species was identified in the paramagnetic pristine fullerene, which may be attributed to hydrogen or C-OH bonds. In contrast, a spin-3/2 species was identified in the ferromagnetic hydrothermally treated fullerene, which may be explained by a hydrogen atom adsorbed to a carbon vacancy.

Original language	English
Article number	114540
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	127
DOIs	https://doi.org/10.1016/j.physe.2020.114540
Publication status	Published - 2021 Mar

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (Project Nos. 2019R1A2C1002076, 2020R1I1A1A01073183 and 2019S1A5A2A03050121). The Korea Basic Science Institute (KBSI) is acknowledged for the measurements.

Funding Information:
This work was supported by the National Research Foundation of Korea (Project Nos. 2019R1A2C1002076 , 2020R1I1A1A01073183 and 2019S1A5A2A03050121 ). The Korea Basic Science Institute (KBSI) is acknowledged for the measurements.

Publisher Copyright:
© 2020 Elsevier B.V.

Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.

Keywords

Ferromagnetic resonance signal
Fullerene
Hydrothermal treatment
Room-temperature ferromagnetism

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics

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10.1016/j.physe.2020.114540

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title = "Room-temperature ferromagnetism in hydrothermally treated fullerene",

abstract = "We have studied the effects of hydrothermal treatment on fullerene (C60) by means of the magnetization and ferromagnetic resonance (FMR) measurements. Room-temperature ferromagnetism was observed in hydrothermally treated fullerene by the magnetization measurements, and a prominent FMR signal was also detected. The magnetization curves were analyzed by employing ferromagnetic and paramagnetic contributions. Thus, a spin-1/2 species was identified in the paramagnetic pristine fullerene, which may be attributed to hydrogen or C-OH bonds. In contrast, a spin-3/2 species was identified in the ferromagnetic hydrothermally treated fullerene, which may be explained by a hydrogen atom adsorbed to a carbon vacancy.",

keywords = "Ferromagnetic resonance signal, Fullerene, Hydrothermal treatment, Room-temperature ferromagnetism",

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

note = "Funding Information: This work was supported by the National Research Foundation of Korea (Project Nos. 2019R1A2C1002076, 2020R1I1A1A01073183 and 2019S1A5A2A03050121). The Korea Basic Science Institute (KBSI) is acknowledged for the measurements. Funding Information: This work was supported by the National Research Foundation of Korea (Project Nos. 2019R1A2C1002076 , 2020R1I1A1A01073183 and 2019S1A5A2A03050121 ). The Korea Basic Science Institute (KBSI) is acknowledged for the measurements. Publisher Copyright: {\textcopyright} 2020 Elsevier B.V. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",

year = "2021",

month = mar,

doi = "10.1016/j.physe.2020.114540",

language = "English",

volume = "127",

journal = "Physica E: Low-Dimensional Systems and Nanostructures",

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AU - Kim, Do Wan

AU - Lee, Kyu Won

AU - Park, Won Koo

AU - Lee, Cheol Eui

N1 - Funding Information: This work was supported by the National Research Foundation of Korea (Project Nos. 2019R1A2C1002076, 2020R1I1A1A01073183 and 2019S1A5A2A03050121). The Korea Basic Science Institute (KBSI) is acknowledged for the measurements. Funding Information: This work was supported by the National Research Foundation of Korea (Project Nos. 2019R1A2C1002076 , 2020R1I1A1A01073183 and 2019S1A5A2A03050121 ). The Korea Basic Science Institute (KBSI) is acknowledged for the measurements. Publisher Copyright: © 2020 Elsevier B.V. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2021/3

Y1 - 2021/3

N2 - We have studied the effects of hydrothermal treatment on fullerene (C60) by means of the magnetization and ferromagnetic resonance (FMR) measurements. Room-temperature ferromagnetism was observed in hydrothermally treated fullerene by the magnetization measurements, and a prominent FMR signal was also detected. The magnetization curves were analyzed by employing ferromagnetic and paramagnetic contributions. Thus, a spin-1/2 species was identified in the paramagnetic pristine fullerene, which may be attributed to hydrogen or C-OH bonds. In contrast, a spin-3/2 species was identified in the ferromagnetic hydrothermally treated fullerene, which may be explained by a hydrogen atom adsorbed to a carbon vacancy.

AB - We have studied the effects of hydrothermal treatment on fullerene (C60) by means of the magnetization and ferromagnetic resonance (FMR) measurements. Room-temperature ferromagnetism was observed in hydrothermally treated fullerene by the magnetization measurements, and a prominent FMR signal was also detected. The magnetization curves were analyzed by employing ferromagnetic and paramagnetic contributions. Thus, a spin-1/2 species was identified in the paramagnetic pristine fullerene, which may be attributed to hydrogen or C-OH bonds. In contrast, a spin-3/2 species was identified in the ferromagnetic hydrothermally treated fullerene, which may be explained by a hydrogen atom adsorbed to a carbon vacancy.

KW - Ferromagnetic resonance signal

KW - Fullerene

KW - Hydrothermal treatment

KW - Room-temperature ferromagnetism

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JO - Physica E: Low-Dimensional Systems and Nanostructures

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Room-temperature ferromagnetism in hydrothermally treated fullerene

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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