Spectroscopic properties and conduction mechanism of KAl(SO4)2:xSm: A multifunctional materials for optical and electrochemical applications.
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| Title: | Spectroscopic properties and conduction mechanism of KAl(SO4)2:xSm: A multifunctional materials for optical and electrochemical applications. |
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| Authors: | Souemti, Ahmed1 (AUTHOR) ahmed.souemti@fst.utm.tn, Labidi, Islem1 (AUTHOR), Megriche, Adel1 (AUTHOR) |
| Source: | Ceramics International. Aug2022, Vol. 48 Issue 15, p21552-21560. 9p. |
| Subjects: | Optical materials, X-ray powder diffraction, Optical measurements, Activation energy, Lattice constants |
| Abstract: | Anhydrous α-alum materials doped with the trivalent samarium oxide Sm 2 O 3 and denoted as KAl(SO 4) 2 :xSm (x = 0; 0.5; 1; 1.5; 2; 2.5% mol.) are prepared by the solid-state reaction method at 350 °C. The resulting phases are crystallized in a simple hexagonal structure with space group P321. Powder X-ray diffraction (XRD), Infrared (IR), and Raman spectroscopies confirmed a high purity of phases with variation in lattice parameters according to the amount of doping. Optical measurements through absorption and fluorescence spectroscopies in the ultra-violet and visible regions prove the different electronic transitions between excited levels and 6H 5/2 ground state of Sm3+, the incorporation of samarium in the crystal structure, and suggest the quenching phenomenon. The materials presented in the study showed an ionic semiconductor behavior with an increase in their conductivity as a function of the doping level. A 1D conduction is made according to the Correlated Barrier Hopping CBH model by cations mobility in crystalline sites under the effect of thermal agitation in the [170–250 °C] region. KAl(SO 4) 2 : xSm (x = 1.5% mol.) with its lower activation energy value, is suggested as a suitable cathode material for aluminum-based batteries. [ABSTRACT FROM AUTHOR] |
| Copyright of Ceramics International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Items | – Name: Title Label: Title Group: Ti Data: Spectroscopic properties and conduction mechanism of KAl(SO4)2:xSm: A multifunctional materials for optical and electrochemical applications. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Souemti%2C+Ahmed%22">Souemti, Ahmed</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> ahmed.souemti@fst.utm.tn</i><br /><searchLink fieldCode="AR" term="%22Labidi%2C+Islem%22">Labidi, Islem</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Megriche%2C+Adel%22">Megriche, Adel</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Ceramics+International%22">Ceramics International</searchLink>. Aug2022, Vol. 48 Issue 15, p21552-21560. 9p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Optical+materials%22">Optical materials</searchLink><br /><searchLink fieldCode="DE" term="%22X-ray+powder+diffraction%22">X-ray powder diffraction</searchLink><br /><searchLink fieldCode="DE" term="%22Optical+measurements%22">Optical measurements</searchLink><br /><searchLink fieldCode="DE" term="%22Activation+energy%22">Activation energy</searchLink><br /><searchLink fieldCode="DE" term="%22Lattice+constants%22">Lattice constants</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Anhydrous α-alum materials doped with the trivalent samarium oxide Sm 2 O 3 and denoted as KAl(SO 4) 2 :xSm (x = 0; 0.5; 1; 1.5; 2; 2.5% mol.) are prepared by the solid-state reaction method at 350 °C. The resulting phases are crystallized in a simple hexagonal structure with space group P321. Powder X-ray diffraction (XRD), Infrared (IR), and Raman spectroscopies confirmed a high purity of phases with variation in lattice parameters according to the amount of doping. Optical measurements through absorption and fluorescence spectroscopies in the ultra-violet and visible regions prove the different electronic transitions between excited levels and 6H 5/2 ground state of Sm3+, the incorporation of samarium in the crystal structure, and suggest the quenching phenomenon. The materials presented in the study showed an ionic semiconductor behavior with an increase in their conductivity as a function of the doping level. A 1D conduction is made according to the Correlated Barrier Hopping CBH model by cations mobility in crystalline sites under the effect of thermal agitation in the [170–250 °C] region. KAl(SO 4) 2 : xSm (x = 1.5% mol.) with its lower activation energy value, is suggested as a suitable cathode material for aluminum-based batteries. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Ceramics International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.ceramint.2022.04.125 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 9 StartPage: 21552 Subjects: – SubjectFull: Optical materials Type: general – SubjectFull: X-ray powder diffraction Type: general – SubjectFull: Optical measurements Type: general – SubjectFull: Activation energy Type: general – SubjectFull: Lattice constants Type: general Titles: – TitleFull: Spectroscopic properties and conduction mechanism of KAl(SO4)2:xSm: A multifunctional materials for optical and electrochemical applications. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Souemti, Ahmed – PersonEntity: Name: NameFull: Labidi, Islem – PersonEntity: Name: NameFull: Megriche, Adel IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 08 Text: Aug2022 Type: published Y: 2022 Identifiers: – Type: issn-print Value: 02728842 Numbering: – Type: volume Value: 48 – Type: issue Value: 15 Titles: – TitleFull: Ceramics International Type: main |
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