Electron spin resonance study of hydrogen-free germanium-doped diamond-like carbon films

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F23%3A00562089" target="_blank" >RIV/68378271:_____/23:00562089 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21460/23:00359914

Výsledek na webu

<a href="https://doi.org/10.1002/pssb.202200155" target="_blank" >https://doi.org/10.1002/pssb.202200155</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/pssb.202200155" target="_blank" >10.1002/pssb.202200155</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Electron spin resonance study of hydrogen-free germanium-doped diamond-like carbon films

Popis výsledku v původním jazyce

Hydrogen-free germanium (Ge)-doped diamond-like carbon (DLC) films deposited on SiO2 substrates are studied by electron spin resonance (ESR) technique at T ¼ 5–295 K. The Ge-free and DLC films with 1 and 2.5 at% Ge content having low cytotoxicity are investigated. A single Lorentzian ESR line resulting from exchange interaction between localized (LE) and nonlocalized electrons (NE) is observed. The spin susceptibility temperature dependence deviates from the Curie–Weiss law at T >75 K due to Pauli contribution caused by NE. The antiferromagnetic lowtemperature spin ordering in DLC films, decreasing with Ge content, is observed. The LE contribution is significant for Ge-free and DLC:1%Ge, whereas NE makes the main contribution to DLC:2.5%Ge. The LEs are related to sp2/sp carbon-related centers, while the NEs are assigned with electrons in the sp3 orbital. The correlation between the sp3/sp2 ratio and the shift of g-factor for NE to lower values with Ge doping is established.n

Název v anglickém jazyce

Electron spin resonance study of hydrogen-free germanium-doped diamond-like carbon films

Popis výsledku anglicky

Hydrogen-free germanium (Ge)-doped diamond-like carbon (DLC) films deposited on SiO2 substrates are studied by electron spin resonance (ESR) technique at T ¼ 5–295 K. The Ge-free and DLC films with 1 and 2.5 at% Ge content having low cytotoxicity are investigated. A single Lorentzian ESR line resulting from exchange interaction between localized (LE) and nonlocalized electrons (NE) is observed. The spin susceptibility temperature dependence deviates from the Curie–Weiss law at T >75 K due to Pauli contribution caused by NE. The antiferromagnetic lowtemperature spin ordering in DLC films, decreasing with Ge content, is observed. The LE contribution is significant for Ge-free and DLC:1%Ge, whereas NE makes the main contribution to DLC:2.5%Ge. The LEs are related to sp2/sp carbon-related centers, while the NEs are assigned with electrons in the sp3 orbital. The correlation between the sp3/sp2 ratio and the shift of g-factor for NE to lower values with Ge doping is established.n

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/EF16_019%2F0000760" target="_blank" >EF16_019/0000760: Fyzika pevných látek pro 21. století</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Physica Status Solidi B

ISSN

0370-1972

e-ISSN

1521-3951

Svazek periodika

260

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

6

Strana od-do

2200155

Kód UT WoS článku

000847117000001

EID výsledku v databázi Scopus

2-s2.0-85136669886