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IR Spectra, Elastic and Dielectric Properties of Li–Mn Ferrite
Joint Authors
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-10-18
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Polycrystalline ferrites, Li0.5–0.5xMnxFe2.5–0.5xO4, (where x= 0.0,0.1,0.3,0.5,0.7,0.9, and 1.0), were prepared by using ceramic method.
Single phase cubic structure was confirmed by X-ray diffractometer.
The lattice parameter “a” was found to increase with increasing Mn2+ ion substitution.
IR spectra of the samples were recorded from 200 to 1000 cm−1.
The two primary bands corresponding to tetrahedral υA and octahedral υB were observed at about 575 cm−1 and 370 cm−1, respectively.
Elastic properties of these mixed ferrites were estimated as a function of composition.
Young's modulus (E), rigidity modulus (G), bulk modulus (B), Debye temperature (θD), and mean sound velocity (Vm) were calculated from the transverse (Vt) and longitudinal (V1) wave velocities.
The variation of elastic moduli with composition was interpreted in terms of binding forces between the atoms of spinel lattice.
AC conductivity σ~ and dielectric properties of the samples were measured at room temperature over 100 Hz–1 MHz.
The electrical conduction mechanism could be explained with the electron hopping model.
Frequency exponential factor (s) was calculated and it was found between 0.4 and 0.8.
American Psychological Association (APA)
Mazen, S. A.& Abu-Elsaad, N. I.. 2012. IR Spectra, Elastic and Dielectric Properties of Li–Mn Ferrite. ISRN Condensed Matter Physics،Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-507111
Modern Language Association (MLA)
Mazen, S. A.& Abu-Elsaad, N. I.. IR Spectra, Elastic and Dielectric Properties of Li–Mn Ferrite. ISRN Condensed Matter Physics No. 2012 (2012), pp.1-9.
https://search.emarefa.net/detail/BIM-507111
American Medical Association (AMA)
Mazen, S. A.& Abu-Elsaad, N. I.. IR Spectra, Elastic and Dielectric Properties of Li–Mn Ferrite. ISRN Condensed Matter Physics. 2012. Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-507111
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-507111