Effect of Ru3+ ions on the formation, structural, magnetic and optical properties of hematite (α-Fe2O3) nanorods
Само за регистроване кориснике
2021
Аутори
Popov, NinaBošković, Marko
Perović, Marija M.
Zadro, Krešo
Gilja, Vanja
Kratofil Krenula, Ljerka
Robić, Marko
Marijan, Marciuš
Ristić, Mira
Musić, Svetozar
Stanković, Dalibor M.
Krehula, Stjepko
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Nanosized hematite (α-Fe2O3) is a widely investigated material due to its favourable properties (chemically stable, environmentally safe, inexpensive) and very good performance in several advanced applications. Properties and performance of hematite nanoparticles can be adjusted and improved by modification of particle size and shape, as well as by substitution of Fe3+ ions in the crystal structure of hematite with other metal ions. Ru3+ ions are potentially suitable metal ions for the substitution of Fe3+ ions in hematite because of the same charge and similar ionic radii. In the present work, the effects of Ru3+ ions on the formation and properties of hematite nanorods prepared by combination of hydrothermal precipitation and calcination were investigated. The influence of the molar fraction of Ru3+ ions in the hydrothermal precipitation system on the formation and properties of iron oxide phases was studied. Single-phase goethite (α-FeOOH) nanorods containing incorporated Ru3+ ions ...were formed in the presence of low levels of Ru3+ ions (<3 mol%), while at higher levels (4 and 5 mol% Ru) hematite nanocylinders, consisting of self-assembled and fused nanoparticles, were obtained. The mechanism of the formation of these iron oxide nanostructures in the presence of Ru3+ ions was explained and compared with the effect of other metal cations reported in the literature. Ru-doped hematite nanorods were formed after calcination of Ru-doped goethite nanorods at 500 °C. A gradual elongation of hematite nanorods with increased Ru doping to highly elongated Ru-doped hematite nanoneedles at 2 mol% Ru was observed and explained. The influence of the Ru doping level on the magnetic properties of hematite nanorods was investigated using Mössbauer spectroscopy and magnetic measurements. Temperature of the transition between antiferromagnetic (AFM) and weakly ferromagnetic (WFM) spin ordering state (Morin transition) gradually rose with increasing Ru3+-for-Fe3+ substitution in hematite. Besides, magnetization of the WFM hematite gradually decreased with Ru doping which was attributed to the reduced canting of two almost antiparallel spin sublattices in this phase. The optical band gap in hematite nanorods was found to get gradually narrower with increased Ru doping due to the modified electronic structure.
Кључне речи:
Hematite / Ru dopant / Nanorods / Nanocylinders / Mössbauer spectroscopy / Morin transitionИзвор:
Journal of magnetism and magnetic materials, 2021, 538, 168316-168321Финансирање / пројекти:
- bilateral Croatian-Serbian [IP-2016-06-8254]
DOI: 10.1016/j.jmmm.2021.168316
ISSN: 0304-8853
WoS: 000686134100009
Scopus: 2-s2.0-85111195905
Институција/група
VinčaTY - JOUR AU - Popov, Nina AU - Bošković, Marko AU - Perović, Marija M. AU - Zadro, Krešo AU - Gilja, Vanja AU - Kratofil Krenula, Ljerka AU - Robić, Marko AU - Marijan, Marciuš AU - Ristić, Mira AU - Musić, Svetozar AU - Stanković, Dalibor M. AU - Krehula, Stjepko PY - 2021 UR - https://vinar.vin.bg.ac.rs/handle/123456789/9882 AB - Nanosized hematite (α-Fe2O3) is a widely investigated material due to its favourable properties (chemically stable, environmentally safe, inexpensive) and very good performance in several advanced applications. Properties and performance of hematite nanoparticles can be adjusted and improved by modification of particle size and shape, as well as by substitution of Fe3+ ions in the crystal structure of hematite with other metal ions. Ru3+ ions are potentially suitable metal ions for the substitution of Fe3+ ions in hematite because of the same charge and similar ionic radii. In the present work, the effects of Ru3+ ions on the formation and properties of hematite nanorods prepared by combination of hydrothermal precipitation and calcination were investigated. The influence of the molar fraction of Ru3+ ions in the hydrothermal precipitation system on the formation and properties of iron oxide phases was studied. Single-phase goethite (α-FeOOH) nanorods containing incorporated Ru3+ ions were formed in the presence of low levels of Ru3+ ions (<3 mol%), while at higher levels (4 and 5 mol% Ru) hematite nanocylinders, consisting of self-assembled and fused nanoparticles, were obtained. The mechanism of the formation of these iron oxide nanostructures in the presence of Ru3+ ions was explained and compared with the effect of other metal cations reported in the literature. Ru-doped hematite nanorods were formed after calcination of Ru-doped goethite nanorods at 500 °C. A gradual elongation of hematite nanorods with increased Ru doping to highly elongated Ru-doped hematite nanoneedles at 2 mol% Ru was observed and explained. The influence of the Ru doping level on the magnetic properties of hematite nanorods was investigated using Mössbauer spectroscopy and magnetic measurements. Temperature of the transition between antiferromagnetic (AFM) and weakly ferromagnetic (WFM) spin ordering state (Morin transition) gradually rose with increasing Ru3+-for-Fe3+ substitution in hematite. Besides, magnetization of the WFM hematite gradually decreased with Ru doping which was attributed to the reduced canting of two almost antiparallel spin sublattices in this phase. The optical band gap in hematite nanorods was found to get gradually narrower with increased Ru doping due to the modified electronic structure. T2 - Journal of magnetism and magnetic materials T2 - Journal of magnetism and magnetic materials T1 - Effect of Ru3+ ions on the formation, structural, magnetic and optical properties of hematite (α-Fe2O3) nanorods VL - 538 SP - 168316 EP - 168321 DO - 10.1016/j.jmmm.2021.168316 ER -
@article{ author = "Popov, Nina and Bošković, Marko and Perović, Marija M. and Zadro, Krešo and Gilja, Vanja and Kratofil Krenula, Ljerka and Robić, Marko and Marijan, Marciuš and Ristić, Mira and Musić, Svetozar and Stanković, Dalibor M. and Krehula, Stjepko", year = "2021", abstract = "Nanosized hematite (α-Fe2O3) is a widely investigated material due to its favourable properties (chemically stable, environmentally safe, inexpensive) and very good performance in several advanced applications. Properties and performance of hematite nanoparticles can be adjusted and improved by modification of particle size and shape, as well as by substitution of Fe3+ ions in the crystal structure of hematite with other metal ions. Ru3+ ions are potentially suitable metal ions for the substitution of Fe3+ ions in hematite because of the same charge and similar ionic radii. In the present work, the effects of Ru3+ ions on the formation and properties of hematite nanorods prepared by combination of hydrothermal precipitation and calcination were investigated. The influence of the molar fraction of Ru3+ ions in the hydrothermal precipitation system on the formation and properties of iron oxide phases was studied. Single-phase goethite (α-FeOOH) nanorods containing incorporated Ru3+ ions were formed in the presence of low levels of Ru3+ ions (<3 mol%), while at higher levels (4 and 5 mol% Ru) hematite nanocylinders, consisting of self-assembled and fused nanoparticles, were obtained. The mechanism of the formation of these iron oxide nanostructures in the presence of Ru3+ ions was explained and compared with the effect of other metal cations reported in the literature. Ru-doped hematite nanorods were formed after calcination of Ru-doped goethite nanorods at 500 °C. A gradual elongation of hematite nanorods with increased Ru doping to highly elongated Ru-doped hematite nanoneedles at 2 mol% Ru was observed and explained. The influence of the Ru doping level on the magnetic properties of hematite nanorods was investigated using Mössbauer spectroscopy and magnetic measurements. Temperature of the transition between antiferromagnetic (AFM) and weakly ferromagnetic (WFM) spin ordering state (Morin transition) gradually rose with increasing Ru3+-for-Fe3+ substitution in hematite. Besides, magnetization of the WFM hematite gradually decreased with Ru doping which was attributed to the reduced canting of two almost antiparallel spin sublattices in this phase. The optical band gap in hematite nanorods was found to get gradually narrower with increased Ru doping due to the modified electronic structure.", journal = "Journal of magnetism and magnetic materials, Journal of magnetism and magnetic materials", title = "Effect of Ru3+ ions on the formation, structural, magnetic and optical properties of hematite (α-Fe2O3) nanorods", volume = "538", pages = "168316-168321", doi = "10.1016/j.jmmm.2021.168316" }
Popov, N., Bošković, M., Perović, M. M., Zadro, K., Gilja, V., Kratofil Krenula, L., Robić, M., Marijan, M., Ristić, M., Musić, S., Stanković, D. M.,& Krehula, S.. (2021). Effect of Ru3+ ions on the formation, structural, magnetic and optical properties of hematite (α-Fe2O3) nanorods. in Journal of magnetism and magnetic materials, 538, 168316-168321. https://doi.org/10.1016/j.jmmm.2021.168316
Popov N, Bošković M, Perović MM, Zadro K, Gilja V, Kratofil Krenula L, Robić M, Marijan M, Ristić M, Musić S, Stanković DM, Krehula S. Effect of Ru3+ ions on the formation, structural, magnetic and optical properties of hematite (α-Fe2O3) nanorods. in Journal of magnetism and magnetic materials. 2021;538:168316-168321. doi:10.1016/j.jmmm.2021.168316 .
Popov, Nina, Bošković, Marko, Perović, Marija M., Zadro, Krešo, Gilja, Vanja, Kratofil Krenula, Ljerka, Robić, Marko, Marijan, Marciuš, Ristić, Mira, Musić, Svetozar, Stanković, Dalibor M., Krehula, Stjepko, "Effect of Ru3+ ions on the formation, structural, magnetic and optical properties of hematite (α-Fe2O3) nanorods" in Journal of magnetism and magnetic materials, 538 (2021):168316-168321, https://doi.org/10.1016/j.jmmm.2021.168316 . .