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

Division of System Semiconductor

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
State	Published - Mar 2021

Keywords

Ferromagnetic resonance signal
Fullerene
Hydrothermal treatment
Room-temperature ferromagnetism

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10.1016/j.physe.2020.114540

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@article{e834b7dbaee94b778685f8edf575f1eb,

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 = "Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2021",

month = mar,

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

language = "English",

volume = "127",

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

issn = "1386-9477",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Room-temperature ferromagnetism in hydrothermally treated fullerene

AU - Kim, Do Wan

AU - Lee, Kyu Won

AU - Park, Won Koo

AU - Lee, Cheol Eui

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

UR - https://www.scopus.com/pages/publications/85097716791

U2 - 10.1016/j.physe.2020.114540

DO - 10.1016/j.physe.2020.114540

M3 - Article

AN - SCOPUS:85097716791

SN - 1386-9477

VL - 127

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

M1 - 114540

ER -

Room-temperature ferromagnetism in hydrothermally treated fullerene

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Keywords

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