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Purpose: The aim of this work is to present the results of the study of the local structure of iron nanoparticles with oxide shell which uses EXAFS method that apply synchrotronic radiation. Design/methodology/approach: The samples used in the carried out analysis were as follows: pure iron powder, pure iron powder containing nanoparticles and pure iron powder containing nanoparticles subjected to 224 hours of grinding. Findings: The local structure of iron nanoparticles with oxide shell were found. Research limitations/implications: It wa s not enough time to measure O:K edge. Practical implications: The analysis of spectra does not reveal any iron oxides in samples. More accurate results would be obtained at oxygen K edge. Originality/value: It was proved that iron nanoparticles with oxide shell samples had the local structure characteristic for metallic iron.
Słowa kluczowe
Wydawca
Rocznik
Tom
Strony
597--600
Opis fizyczny
Bibliogr. 15 poz., wykr.
Twórcy
autor
autor
autor
- Department of Material Science, Rzeszów University of Technology, Poland, onyszko@prz.edu.pl
Bibliografia
- [1] E. Sobczak, N. N. Dorozhkin, Relevance Feedback Icon Multiple scattering calculations of Fe K EXAFS for Fe surfaces and nanocrystals, Journal of Alloys and Compounds 286 (1999) 108-113.
- [2] K. Kobayashi, H. Maruyama, H. Maeda, T. Iwazumi, H. Kawata, H. Yamazaki, Magnetic EXAFS study of pure Fe and Fe-oxides at Fe K-edge, Physica B 1 (1995) 779-780.
- [3] M. Kowalczyk, J. Ferenc, T. Kulig, Thermal and magnetic properties of nanocrystalline alloys from Fe-Co-Hf-Zr-Cu-B system, XVIII Phisical Metallurgy and Materials Science Conference, Advanced Materials and Technologies 18 (2007) 283-285.
- [4] P. Gramatyka, R. Nowosielski, P. Sakiewicz, Soft magnetic composite based on nanocrystalline FeSiBCuNb and Fe powders, Journal of Achievements in Materials and Manufacturing Engineering 15 (2006) 27-30.
- [5] R. Nowosielski, W. Pilarczyk, Structure and properties of Fe-6,67%c alloy obtained by mechanical alloying, Proceedings of the 13th Scientific International Conference „Achievements in Mechanical and Materials Engineering” AMME'2003, Gliwice-Wisła, 2005, 481-486.
- [6] S. Lesz, D. Szewieczek, J. E. Frąckowiak, Structure and magnetic properties of amorphous and nanocrystalline Fe85.4Hf1.4B13.2 alloy, Journal of Achievements in Materials and Manufacturing Engineering 19 (2006) 29-32.
- [7] G. Subías, J. García, J. Blasco, EXAFS spectroscopic analysis of the Verwey transition in Fe3O4, Phys. Rev. B 71 (2005) 155103.
- [8] H. Purdum, P. A. Montano, G. K. Shenoy, T. Morrison, Extended-x-ray-absorption-fine-structure study of small Fe molecules isolated in solid neon, Phys. Rev. B 25 (1982), 4412.
- [9] L. Signorini, L. Pasquini, L. Savini, R. Carboni, F. Boscherini, E. Bonetti, A. Giglia, M. Pedio, N. Mahne, S. Nannarone, Size-dependent oxidation in iron/iron oxide core-shell nanoparticles, Italy 68 (2003) 195423.
- [10] B. Ravel, Introduction to XAS Theory.http://cars9.uchicago. edu/~ravel/software/.
- [11] R. Bare, XANES Measurements and Interpretation, National Synchrotron Light Source 14 (2003) 8-23.
- [12] Z. Bojarski, M. Gigla, K. Stróż, M. Surowiec, Crystallography, PWN, Warsaw, 2001 (in Polish).
- [13] A. Oleś, Experiment methods of solid-state physics, WNT, Warsaw, 1998 (in Polish).
- [14] D. Owoc, J. Przewoźnik, A. Kozłowski, Z. Kąkol, A. Wiecheć, J. M. Honig, X-ray studies of Fe3-xMexO4, Me=Zn, Ti and Al, the impact of doping on the Verwey transition, Physica B 359-361 (2005) 1339-1341.
- [15] D. Kmiec, B. Sepioł, M. Sladecek, G. Vogl, J. Korecki, T. Ślęzak, Diffusion of iron in an near-surface of Fe3Si investigated by nuclear resonant scattering of synchrotron radiation, Defect Diffusion Forum, 237-240 (2005) 1222-1224.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BWAN-0002-0005