Abstract
A structural and Mössbauer study of mechanosynthesized EuCr1 − xFexO3 nanocrystalline particles (∼20–30 nm) is presented. The lattice parameters increase with increasing x-value leading to an increasingly distorted structure. The crystallite sizes range between 20 nm and 30 nm. Magnetic and 57Fe Mössbauer measurements show the samples with x < 0.7 to be paramagnetic and those with x ≥ 0.7 to be partially superparamagnetic at 298 K. The 78 K Mössbauer spectra of the samples with x = 0.3–1.0 are composed of well-resolved two sextets that are explicable in terms of the structural model that we recently have proposed for the EuCrO3 nanoparticles according to which the transition metal ions and Eu3 + partly exchange their usual sites in the perovskite-related structure (Widatallah et al. J Phys D Appl Phys 44:265403, 2011). Consequently, the two sextets obtained at 78 K refer to Fe3 + ions at the usual B-octahedral site and the A-dodecahedral site usually occupied by Eu3 + .
Preview
Unable to display preview. Download preview PDF.
References
Widatallah, H.M., Al-Harthi, S.H., Johnson, C., Klencsar, Z., Gismelseed, A.M., Moore, E.A., et al.: J. Phys. D Appl. Phys. 44, 265403 (2011)
Niu, X., Du, W., Du, W.: Sens Actuat. B Chem. 99, 399 (2004)
Tsushima, K., Takemura, I., Osaka, S.: Solid. State Commun. 7, 71 (1969)
Gibb, T.C.: J. Chem. Soc. Dalton Trans. 2245 (1981)
Gibb, T.C.: J. Chem. Soc. Dalton Trans. 2031 (1983)
Winter, M.J.: www.webelements.com. University of Sheffield, UK (1995–2011)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2013 Springer Science+Business Media B.V.
About this paper
Cite this paper
Widatallah, H.M. et al. (2013). Structural and 57Fe Mössbauer study of EuCr1 − x Fe x O3 nanocrystalline particles. In: Yoshida, Y. (eds) ICAME 2011. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-4762-3_40
Download citation
DOI: https://doi.org/10.1007/978-94-007-4762-3_40
Received:
Accepted:
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-007-4761-6
Online ISBN: 978-94-007-4762-3
eBook Packages: Physics and AstronomyPhysics and Astronomy (R0)