Magnetic properties of graphene nanodisk and nanocone powders at low temperatures

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F15%3A00233316" target="_blank" >RIV/68407700:21340/15:00233316 - isvavai.cz</a>

Result on the web

<a href="http://link.aps.org/doi/10.1103/PhysRevB.92.155429" target="_blank" >http://link.aps.org/doi/10.1103/PhysRevB.92.155429</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevB.92.155429" target="_blank" >10.1103/PhysRevB.92.155429</a>

Result language

angličtina

Original language name

Magnetic properties of graphene nanodisk and nanocone powders at low temperatures

Original language description

We have investigated the magnetic properties of carbon powders consisting of graphene nanocones and nanodisks. Magnetization measurements were carried out using a superconducting quantum interference devices in magnetic fields -5 < B < 5T for temperatures in the range 0.5 < T < 300K. We have observed that magnetization M depends on temperature T as a power law M / T-a where the scaling exponent 0.68 < a < 0.83 was determined. We found that the magnetization consists of a diamagnetic background and a paramagnetic contribution of localized spins where the effective spin value S increases from S = 1/2 at temperature T > 20K to S = 3 at low temperatures 0.5 < T < 20 K.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2015

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physical Review B

ISSN

0163-1829

e-ISSN

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Volume of the periodical

92

Issue of the periodical within the volume

15

Country of publishing house

US - UNITED STATES

Number of pages

8

Pages from-to

155429-155436

UT code for WoS article

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EID of the result in the Scopus database

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