Long-Range Magnetic Order in Nickel Hydroxide-Functionalized
Graphene Quantum Dots

J 2022

Long-Range Magnetic Order in Nickel Hydroxide-Functionalized Graphene Quantum Dots

MICHAL, Lukáš, Rajarshi ROY, David HOLEC, Inmaculada Jennifer GOMEZ PEREZ, Naděžda PIZÚROVÁ et. al.

Základní údaje

Originální název

Long-Range Magnetic Order in Nickel Hydroxide-Functionalized Graphene Quantum Dots

Autoři

MICHAL, Lukáš (203 Česká republika, domácí), Rajarshi ROY (356 Indie, garant, domácí), David HOLEC, Inmaculada Jennifer GOMEZ PEREZ (724 Španělsko, domácí), Naděžda PIZÚROVÁ, David NEČAS, Anna DOLEČKOVÁ (203 Česká republika, domácí), Jiřina MEDALOVÁ (203 Česká republika, domácí), Petr LEPCIO a Lenka ZAJÍČKOVÁ (203 Česká republika, domácí)

Vydání

Journal of Physical Chemistry Letters, Washington, American Chemical Society, 2022, 1948-7185

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10403 Physical chemistry

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 5.700

Kód RIV

RIV/00216224:14310/22:00128516

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.1021/acs.jpclett.2c02964

UT WoS

000893469000001

Klíčová slova anglicky

Charge transfer; Magnetic properties; Quantum mechanics; Two dimensional materials; X-ray photoelectron spectroscopy

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 15. 2. 2023 18:03, doc. Mgr. Lenka Zajíčková, Ph.D.

Anotace

V originále

In this work, we demonstrate the prospect of chemically synthesizing transition metal (Ni) doped magnetic graphene quantum dots (GQDs) with the sole aim of shedding light on their magnetic properties. Our results show that adsorption of nickel hydroxide on predominantly paramagnetic GQDs reveals antiferromagnetic ordering in the M–T profile around 10 K with change of the spin exchange coupling deviating from J = 1/2 to J = 1, mainly arising from the d–p mixing hybridization between the p orbital of carbon from the GQD and the d orbital of Ni. Furthermore, our results are well complemented by ab initio simulations showing asymmetry of the up and down spins around the Fermi level for nickel hydroxide-doped GQDs with long-range spin polarization. Furthermore, the magnitude of the net magnetic moment generated for doped GQDs on the carbon atoms is found to be site-dependent (surface or edge).

Návaznosti

EF17_043/0009632, projekt VaV

Název: CETOCOEN Excellence

EF18_070/0009846, projekt VaV

Název: MSCAfellow2@MUNI

EF20_079/0017045, projekt VaV

Název: MSCAfellow4@MUNI

LM2018121, projekt VaV

Název: Výzkumná infrastruktura RECETOX (Akronym: RECETOX RI)

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, RECETOX RI

90110, velká výzkumná infrastruktura

Název: CzechNanoLab

Citovat

MICHAL, Lukáš, Rajarshi ROY, David HOLEC, Inmaculada Jennifer GOMEZ PEREZ, Naděžda PIZÚROVÁ, David NEČAS, Anna DOLEČKOVÁ, Jiřina MEDALOVÁ, Petr LEPCIO a Lenka ZAJÍČKOVÁ. Long-Range Magnetic Order in Nickel Hydroxide-Functionalized Graphene Quantum Dots. Journal of Physical Chemistry Letters. Washington: American Chemical Society, 2022, roč. 13, č. 49, s. 11536-11542. ISSN 1948-7185. Dostupné z: https://dx.doi.org/10.1021/acs.jpclett.2c02964.

@article{2252388,
   author = {Michal, Lukáš and Roy, Rajarshi and Holec, David and Gomez Perez, Inmaculada Jennifer and Pizúrová, Naděžda and Nečas, David and Dolečková, Anna and Medalová, Jiřina and Lepcio, Petr and Zajíčková, Lenka},
   article_location = {Washington},
   article_number = {49},
   doi = {http://dx.doi.org/10.1021/acs.jpclett.2c02964},
   keywords = {Charge transfer; Magnetic properties; Quantum mechanics; Two dimensional materials; X-ray photoelectron spectroscopy},
   language = {eng},
   issn = {1948-7185},
   journal = {Journal of Physical Chemistry Letters},
   title = {Long-Range Magnetic Order in Nickel Hydroxide-Functionalized Graphene Quantum Dots},
   url = {https://doi.org/10.1021/acs.jpclett.2c02964},
   volume = {13},
   year = {2022}
}

TY  - JOUR
ID  - 2252388
AU  - Michal, Lukáš - Roy, Rajarshi - Holec, David - Gomez Perez, Inmaculada Jennifer - Pizúrová, Naděžda - Nečas, David - Dolečková, Anna - Medalová, Jiřina - Lepcio, Petr - Zajíčková, Lenka
PY  - 2022
TI  - Long-Range Magnetic Order in Nickel Hydroxide-Functionalized Graphene Quantum Dots
JF  - Journal of Physical Chemistry Letters
VL  - 13
IS  - 49
SP  - 11536-11542
EP  - 11536-11542
PB  - American Chemical Society
SN  - 19487185
KW  - Charge transfer
KW  - Magnetic properties
KW  - Quantum mechanics
KW  - Two dimensional materials
KW  - X-ray photoelectron spectroscopy
UR  - https://doi.org/10.1021/acs.jpclett.2c02964
N2  - In this work, we demonstrate the prospect of chemically synthesizing transition metal (Ni) doped magnetic graphene quantum dots (GQDs) with the sole aim of shedding light on their magnetic properties. Our results show that adsorption of nickel hydroxide on predominantly paramagnetic GQDs reveals antiferromagnetic ordering in the M–T profile around 10 K with change of the spin exchange coupling deviating from J = 1/2 to J = 1, mainly arising from the d–p mixing hybridization between the p orbital of carbon from the GQD and the d orbital of Ni. Furthermore, our results are well complemented by ab initio simulations showing asymmetry of the up and down spins around the Fermi level for nickel hydroxide-doped GQDs with long-range spin polarization. Furthermore, the magnitude of the net magnetic moment generated for doped GQDs on the carbon atoms is found to be site-dependent (surface or edge).
ER  -

MICHAL, Lukáš, Rajarshi ROY, David HOLEC, Inmaculada Jennifer GOMEZ PEREZ, Naděžda PIZÚROVÁ, David NEČAS, Anna DOLEČKOVÁ, Jiřina MEDALOVÁ, Petr LEPCIO a Lenka ZAJÍČKOVÁ. Long-Range Magnetic Order in Nickel Hydroxide-Functionalized Graphene Quantum Dots. \textit{Journal of Physical Chemistry Letters}. Washington: American Chemical Society, 2022, roč.~13, č.~49, s.~11536-11542. ISSN~1948-7185. Dostupné z: https://dx.doi.org/10.1021/acs.jpclett.2c02964.

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