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.

Basic information

Original name

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

Authors

MICHAL, Lukáš (203 Czech Republic, belonging to the institution), Rajarshi ROY (356 India, guarantor, belonging to the institution), David HOLEC, Inmaculada Jennifer GOMEZ PEREZ (724 Spain, belonging to the institution), Naděžda PIZÚROVÁ, David NEČAS, Anna DOLEČKOVÁ (203 Czech Republic, belonging to the institution), Jiřina MEDALOVÁ (203 Czech Republic, belonging to the institution), Petr LEPCIO and Lenka ZAJÍČKOVÁ (203 Czech Republic, belonging to the institution)

Edition

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

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10403 Physical chemistry

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

Impact factor

Impact factor: 5.700

RIV identification code

RIV/00216224:14310/22:00128516

Organization unit

Faculty of Science

DOI

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

UT WoS

000893469000001

Keywords in English

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

Abstract

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).

Links

EF17_043/0009632, research and development project

Name: CETOCOEN Excellence

EF18_070/0009846, research and development project

Name: MSCAfellow2@MUNI

EF20_079/0017045, research and development project

Name: MSCAfellow4@MUNI

LM2018121, research and development project

Name: Výzkumná infrastruktura RECETOX (Acronym: RECETOX RI)

Investor: Ministry of Education, Youth and Sports of the CR, RECETOX RI

90110, large research infrastructures

Name: CzechNanoLab

Citovat

MICHAL, Lukáš, Rajarshi ROY, David HOLEC, Inmaculada Jennifer GOMEZ PEREZ, Naděžda PIZÚROVÁ, David NEČAS, Anna DOLEČKOVÁ, Jiřina MEDALOVÁ, Petr LEPCIO and Lenka ZAJÍČKOVÁ. Long-Range Magnetic Order in Nickel Hydroxide-Functionalized Graphene Quantum Dots. Journal of Physical Chemistry Letters. Washington: American Chemical Society, 2022, vol. 13, No 49, p. 11536-11542. ISSN 1948-7185. Available from: 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 and Lenka ZAJÍČKOVÁ. Long-Range Magnetic Order in Nickel Hydroxide-Functionalized Graphene Quantum Dots. \textit{Journal of Physical Chemistry Letters}. Washington: American Chemical Society, 2022, vol.~13, No~49, p.~11536-11542. ISSN~1948-7185. Available from: https://dx.doi.org/10.1021/acs.jpclett.2c02964.

Detailed Information on Publication Record