Effect of citric acid on the morpho-structural and magnetic properties of ultrasmall iron oxide nanoparticles
Само за регистроване кориснике
2021
Аутори
Omelyanchik, Alexanderda Silva, Franciscarlos Gomes
Gomide, Guilherme
Kozenkov, Ivan
Depeyrot, Jerome
Aquino, Renata
Campos, Alex Fabiano Cortez
Fiorani, Dino
Peddis, Davide
Rodionova, Valeria
Jovanović, Sonja
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The structural and magnetic properties of iron oxide nanoparticles obtained by the precipitation of iron ions in the presence of different amounts of citric acid were studied. The citric acid acts as a capping agent and provides control of the particle size to be obtained. The size dependence of the magnetic properties was investigated by comparing the results for ~2, 4, 6, and 8 nm particles. With decreasing the particle size, a reduction of the saturation magnetization (from ~84 to 33 Am2/kg) and an increase of coercivity (from ~32 to ~100 mT) were observed, due to the increasing role of the disordered surface. The behaviour of the zero-field cooled/field cooled magnetization curves indicates a superspin-glass freezing for 2 nm and 4 nm particle samples. Memory experiments below the freezing temperature on the 2 nm particle sample provide further evidence of a glassy magnetic state. The observation of exchange bias, due to core/shell interface exchange coupling, for 2 nm and 4 nm par...ticle samples provides evidence of a surface spin-glass type freezing, which contributes to the observed glassy properties.
Кључне речи:
Exchange bias / Iron oxides / Magnetic nanoparticles / Memory effect / Spin-glass / Superparamagnetic particles / Superspin-glassИзвор:
Journal of Alloys and Compounds, 2021, 883, 160779-Финансирање / пројекти:
- Ministry of Education, Science and Technological Development of Republic of Serbia
- Russian Science Foundation [21-72-30032]
- Ministry of Higher Education, Science and Technology of the Republic of Slovenia [P2-0091]
- Slovenian Research Agency [J2-8169]
- INCT-FCx [2014/50983-3]
- FAP-DF [0193.001376/2016]
DOI: 10.1016/j.jallcom.2021.160779
ISSN: 0925-8388
WoS: 000679212600006
Scopus: 2-s2.0-85109178407
Колекције
Институција/група
VinčaTY - JOUR AU - Omelyanchik, Alexander AU - da Silva, Franciscarlos Gomes AU - Gomide, Guilherme AU - Kozenkov, Ivan AU - Depeyrot, Jerome AU - Aquino, Renata AU - Campos, Alex Fabiano Cortez AU - Fiorani, Dino AU - Peddis, Davide AU - Rodionova, Valeria AU - Jovanović, Sonja PY - 2021 UR - https://vinar.vin.bg.ac.rs/handle/123456789/9857 AB - The structural and magnetic properties of iron oxide nanoparticles obtained by the precipitation of iron ions in the presence of different amounts of citric acid were studied. The citric acid acts as a capping agent and provides control of the particle size to be obtained. The size dependence of the magnetic properties was investigated by comparing the results for ~2, 4, 6, and 8 nm particles. With decreasing the particle size, a reduction of the saturation magnetization (from ~84 to 33 Am2/kg) and an increase of coercivity (from ~32 to ~100 mT) were observed, due to the increasing role of the disordered surface. The behaviour of the zero-field cooled/field cooled magnetization curves indicates a superspin-glass freezing for 2 nm and 4 nm particle samples. Memory experiments below the freezing temperature on the 2 nm particle sample provide further evidence of a glassy magnetic state. The observation of exchange bias, due to core/shell interface exchange coupling, for 2 nm and 4 nm particle samples provides evidence of a surface spin-glass type freezing, which contributes to the observed glassy properties. T2 - Journal of Alloys and Compounds T1 - Effect of citric acid on the morpho-structural and magnetic properties of ultrasmall iron oxide nanoparticles VL - 883 SP - 160779 DO - 10.1016/j.jallcom.2021.160779 ER -
@article{ author = "Omelyanchik, Alexander and da Silva, Franciscarlos Gomes and Gomide, Guilherme and Kozenkov, Ivan and Depeyrot, Jerome and Aquino, Renata and Campos, Alex Fabiano Cortez and Fiorani, Dino and Peddis, Davide and Rodionova, Valeria and Jovanović, Sonja", year = "2021", abstract = "The structural and magnetic properties of iron oxide nanoparticles obtained by the precipitation of iron ions in the presence of different amounts of citric acid were studied. The citric acid acts as a capping agent and provides control of the particle size to be obtained. The size dependence of the magnetic properties was investigated by comparing the results for ~2, 4, 6, and 8 nm particles. With decreasing the particle size, a reduction of the saturation magnetization (from ~84 to 33 Am2/kg) and an increase of coercivity (from ~32 to ~100 mT) were observed, due to the increasing role of the disordered surface. The behaviour of the zero-field cooled/field cooled magnetization curves indicates a superspin-glass freezing for 2 nm and 4 nm particle samples. Memory experiments below the freezing temperature on the 2 nm particle sample provide further evidence of a glassy magnetic state. The observation of exchange bias, due to core/shell interface exchange coupling, for 2 nm and 4 nm particle samples provides evidence of a surface spin-glass type freezing, which contributes to the observed glassy properties.", journal = "Journal of Alloys and Compounds", title = "Effect of citric acid on the morpho-structural and magnetic properties of ultrasmall iron oxide nanoparticles", volume = "883", pages = "160779", doi = "10.1016/j.jallcom.2021.160779" }
Omelyanchik, A., da Silva, F. G., Gomide, G., Kozenkov, I., Depeyrot, J., Aquino, R., Campos, A. F. C., Fiorani, D., Peddis, D., Rodionova, V.,& Jovanović, S.. (2021). Effect of citric acid on the morpho-structural and magnetic properties of ultrasmall iron oxide nanoparticles. in Journal of Alloys and Compounds, 883, 160779. https://doi.org/10.1016/j.jallcom.2021.160779
Omelyanchik A, da Silva FG, Gomide G, Kozenkov I, Depeyrot J, Aquino R, Campos AFC, Fiorani D, Peddis D, Rodionova V, Jovanović S. Effect of citric acid on the morpho-structural and magnetic properties of ultrasmall iron oxide nanoparticles. in Journal of Alloys and Compounds. 2021;883:160779. doi:10.1016/j.jallcom.2021.160779 .
Omelyanchik, Alexander, da Silva, Franciscarlos Gomes, Gomide, Guilherme, Kozenkov, Ivan, Depeyrot, Jerome, Aquino, Renata, Campos, Alex Fabiano Cortez, Fiorani, Dino, Peddis, Davide, Rodionova, Valeria, Jovanović, Sonja, "Effect of citric acid on the morpho-structural and magnetic properties of ultrasmall iron oxide nanoparticles" in Journal of Alloys and Compounds, 883 (2021):160779, https://doi.org/10.1016/j.jallcom.2021.160779 . .