| Issue |
EPJ Web Conf.
Volume 201, 2019
The XXII International Scientific Conference of Young Scientists and Specialists (AYSS-2018)
|
|
|---|---|---|
| Article Number | 02003 | |
| Number of page(s) | 5 | |
| Section | Condensed Matter Physics | |
| DOI | https://doi.org/10.1051/epjconf/201920102003 | |
| Published online | 04 February 2019 | |
https://doi.org/10.1051/epjconf/201920102003
Investigation of phase transformations of iron nanoparticles during thermal annealing
1
Institute of Nuclear Physics of Republic of Kazakhstan, Astana, Kazakhstan
2
L.N. Gumilyov Eurasian National University, Astana, Kazakhstan
3
Ural Federal University named after the First President of Russia B.N. Yeltsin, Yekaterinburg, Russia
* Corresponding author: tulebaevadinara01@gmail.com
Published online: 4 February 2019
Structural properties and phase composition of nanoparticles based on iron oxide were studied. Mossbauer spectroscopy, X-ray diffraction, and scanning electron microscopy were used for the analysis of phase transformations. According to XRD and Mossbauer spectroscopy data, an increase in the annealing temperature, as well as the subsequent phase transformations of magnetite into maghemite and then to hematite, indicate an improvement in the structure and a decrease in microdistortions in the lattice as a result of annealing defects and vacancies. According to Mossbauer spectroscopy data at temperatures above 400°C, the lines of characteristic FeO, which are characteristic for disordered iron oxide, are observed, which also confirms the improvement of the crystal structure of nanoparticles.
© The Authors, published by EDP Sciences, 2018
This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.