Pristine SnO2 thin films: origins of high curie temperature
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F25%3A00142296" target="_blank" >RIV/00216224:14310/25:00142296 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1007/s00339-025-09031-7" target="_blank" >https://doi.org/10.1007/s00339-025-09031-7</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s00339-025-09031-7" target="_blank" >10.1007/s00339-025-09031-7</a>
Alternative languages
Result language
angličtina
Original language name
Pristine SnO2 thin films: origins of high curie temperature
Original language description
We investigate the origin of ferromagnetism (FM) and the exceptionally high Curie temperature (TC) in undoped SnO2 films. Ultra-thin SnO2 films were found to exhibit significant FM, while thicker films show a diamagnetic behavior. Structural and chemical analyses reveal a variation in oxygen vacancy concentrations between thin and thick films. Notably, an exceptionally high TC exceeding 800 K is observed for the first time. XPS and XAS analyses reveal the presence of oxygen and tin vacancies, which might play a crucial role in the observed magnetism. Theoretically, it was supposed that oxygen vacancies play a crucial role in the FM of SnO2 films. However, the experimentally observed TC surpasses the predicted 505 K, suggesting additional contributing factors. This suggests that both oxygen and tin defects might contribute to the total magnetic moment. The findings highlight the key role of defect-induced magnetism in SnO2 thin films and provide insights into the fundamental mechanism driving high- TC FM in undoped oxide semiconductors.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Applied Physics A
ISSN
0947-8396
e-ISSN
1432-0630
Volume of the periodical
131
Issue of the periodical within the volume
11
Country of publishing house
DE - GERMANY
Number of pages
9
Pages from-to
852
UT code for WoS article
001594699300014
EID of the result in the Scopus database
2-s2.0-105018907540