High-Energy Proton-Irradiation Effects on the Magnetism of the Transition-Metal Dichalcogenide MoS2

Gi Wan Jeon; Kyu Won Lee; Cheol Eui Lee

doi:10.3938/jkps.76.93

High-Energy Proton-Irradiation Effects on the Magnetism of the Transition-Metal Dichalcogenide MoS₂

Gi Wan Jeon, Kyu Won Lee, Cheol Eui Lee

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

6 Citations (Scopus)

Abstract

We have studied the effects of high-energy proton irradiation on the magnetism of the transition-metal dichalcogenide MoS₂. The pristine sample showed ferromagnetic and paramagnetic responses with a diamagnetic background, which all decreased initially with increasing irradiation dose. The ferromagnetic component increased subsequently with further irradiation, for which a spin-3/2 species was identified from the analysis of the M(H) curve, in contrast to the spin-1 species identified in the pristine sample. The magnetism in our MoS₂ samples may be accounted for by the structural defects that apparently are cured by low-dose proton irradiation and subsequently become significant by further irradiation.

Original language	English
Pages (from-to)	93-96
Number of pages	4
Journal	Journal of the Korean Physical Society
Volume	76
Issue number	1
DOIs	https://doi.org/10.3938/jkps.76.93
Publication status	Published - 2020 Jan 1

Bibliographical note

Funding Information:
This work was supported by the Ministry of Education and the National Research Foundation of Korea (Project No. 2019S1A5A2A03050121). The Korea Basic Science Institute (KBSI) and the Korea Multi-Purpose Accelerator Complex (KOMAC) are, respectively, acknowledged for the measurements and the proton irradiation.

Publisher Copyright:
© 2020, The Korean Physical Society.

Keywords

High-energy proton irradiation
Magnetism
MoS
Structural defects

ASJC Scopus subject areas

General Physics and Astronomy

Access to Document

10.3938/jkps.76.93

Cite this

@article{567bdf0edd4a42b6896b90af35cdc056,

title = "High-Energy Proton-Irradiation Effects on the Magnetism of the Transition-Metal Dichalcogenide MoS2 ",

abstract = "We have studied the effects of high-energy proton irradiation on the magnetism of the transition-metal dichalcogenide MoS2. The pristine sample showed ferromagnetic and paramagnetic responses with a diamagnetic background, which all decreased initially with increasing irradiation dose. The ferromagnetic component increased subsequently with further irradiation, for which a spin-3/2 species was identified from the analysis of the M(H) curve, in contrast to the spin-1 species identified in the pristine sample. The magnetism in our MoS2 samples may be accounted for by the structural defects that apparently are cured by low-dose proton irradiation and subsequently become significant by further irradiation.",

keywords = "High-energy proton irradiation, Magnetism, MoS, Structural defects",

author = "Jeon, {Gi Wan} and Lee, {Kyu Won} and Lee, {Cheol Eui}",

note = "Funding Information: This work was supported by the Ministry of Education and the National Research Foundation of Korea (Project No. 2019S1A5A2A03050121). The Korea Basic Science Institute (KBSI) and the Korea Multi-Purpose Accelerator Complex (KOMAC) are, respectively, acknowledged for the measurements and the proton irradiation. Publisher Copyright: {\textcopyright} 2020, The Korean Physical Society.",

year = "2020",

month = jan,

day = "1",

doi = "10.3938/jkps.76.93",

language = "English",

volume = "76",

pages = "93--96",

journal = "Journal of the Korean Physical Society",

issn = "0374-4884",

publisher = "Korean Physical Society",

number = "1",

}

TY - JOUR

T1 - High-Energy Proton-Irradiation Effects on the Magnetism of the Transition-Metal Dichalcogenide MoS2

AU - Jeon, Gi Wan

AU - Lee, Kyu Won

AU - Lee, Cheol Eui

N1 - Funding Information: This work was supported by the Ministry of Education and the National Research Foundation of Korea (Project No. 2019S1A5A2A03050121). The Korea Basic Science Institute (KBSI) and the Korea Multi-Purpose Accelerator Complex (KOMAC) are, respectively, acknowledged for the measurements and the proton irradiation. Publisher Copyright: © 2020, The Korean Physical Society.

PY - 2020/1/1

Y1 - 2020/1/1

N2 - We have studied the effects of high-energy proton irradiation on the magnetism of the transition-metal dichalcogenide MoS2. The pristine sample showed ferromagnetic and paramagnetic responses with a diamagnetic background, which all decreased initially with increasing irradiation dose. The ferromagnetic component increased subsequently with further irradiation, for which a spin-3/2 species was identified from the analysis of the M(H) curve, in contrast to the spin-1 species identified in the pristine sample. The magnetism in our MoS2 samples may be accounted for by the structural defects that apparently are cured by low-dose proton irradiation and subsequently become significant by further irradiation.

AB - We have studied the effects of high-energy proton irradiation on the magnetism of the transition-metal dichalcogenide MoS2. The pristine sample showed ferromagnetic and paramagnetic responses with a diamagnetic background, which all decreased initially with increasing irradiation dose. The ferromagnetic component increased subsequently with further irradiation, for which a spin-3/2 species was identified from the analysis of the M(H) curve, in contrast to the spin-1 species identified in the pristine sample. The magnetism in our MoS2 samples may be accounted for by the structural defects that apparently are cured by low-dose proton irradiation and subsequently become significant by further irradiation.

KW - High-energy proton irradiation

KW - Magnetism

KW - MoS

KW - Structural defects

UR - http://www.scopus.com/inward/record.url?scp=85077695265&partnerID=8YFLogxK

U2 - 10.3938/jkps.76.93

DO - 10.3938/jkps.76.93

M3 - Article

AN - SCOPUS:85077695265

SN - 0374-4884

VL - 76

SP - 93

EP - 96

JO - Journal of the Korean Physical Society

JF - Journal of the Korean Physical Society

IS - 1

ER -