Structural and magnetic characterization of LiMn{sub 1.825}Cr{sub 0.175}O{sub 4} spinel obtained by ultrasonic spray pyrolysis
- Institute of Technical Sciences of the Serbian Academy of Sciences and Arts, Knez Mihailova 35/IV, 11 000 Belgrade (Serbia)
- Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12-16, P.O. Box 137, Belgrade (Serbia)
- Vinca Institute of Nuclear Sciences, Laboratory for Theoretical and Condensed Matter Physics, P.O. Box 522, 11001 Belgrade (Serbia)
- Faculty of Medicine, University of Nis (Serbia)
- Jozef Stefan Institute, Ljubljana (Slovenia)
Quaternary spinel oxide LiMn{sub 1.825}Cr{sub 0.175}O{sub 4} powder was synthesized by using an ultrasonic spray pyrolysis method, without additional annealing. The crystal structure of the as-prepared powder was revealed by X-ray powder diffraction and identified as a single spinel phase with Fd3m space group. The powders had a spherical morphology with extremely smooth surface appearance and densely congested interior structure. Transmission electron microscopy confirmed that the particle consisted by the cohesion of the primary particles. Magnetic measurements performed in DC field in both zero-field-cooled and field-cooled regimes, as well as AC susceptibility experiments, show that system undergoes spin-glass transition at the freezing temperature T {sub f} = 20 K. The value of the effective magnetic moment {mu} {sub eff} = 4.34 {mu} {sub B} obtained from the Curie-Weiss fit in the high temperature region confirms the substitution of Mn{sup 3+} ions with Cr{sup 3+} ions.
- OSTI ID:
- 21000607
- Journal Information:
- Materials Research Bulletin, Vol. 42, Issue 3; Other Information: DOI: 10.1016/j.materresbull.2006.06.018; PII: S0025-5408(06)00260-1; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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