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Optical and magnetic properties of nanostructured cerium-doped LaMgAl11O19

Published online by Cambridge University Press:  17 June 2020

Ladislav Nádherný Open the ORCID record for Ladislav Nádherný [Opens in a new window] ,
Václav Doležal ,
David Sedmidubský ,
Jakub Cajzl ,
Romana Kučerková ,
Martin Nikl ,
Vít Jakeš  and
Kateřina Rubešová
Ladislav Nádherný*
Affiliation:
Department of Inorganic Chemistry, University of Chemistry and Technology Prague, 166 28Prague 6, Czech Republic
Václav Doležal
Affiliation:
Department of Inorganic Chemistry, University of Chemistry and Technology Prague, 166 28Prague 6, Czech Republic
David Sedmidubský
Affiliation:
Department of Inorganic Chemistry, University of Chemistry and Technology Prague, 166 28Prague 6, Czech Republic
Jakub Cajzl
Affiliation:
Department of Inorganic Chemistry, University of Chemistry and Technology Prague, 166 28Prague 6, Czech Republic
Romana Kučerková
Affiliation:
Institute of Physics of the Academy of Sciences of the Czech Republic, 162 00Prague 6, Czech Republic
Martin Nikl
Affiliation:
Institute of Physics of the Academy of Sciences of the Czech Republic, 162 00Prague 6, Czech Republic
Vít Jakeš
Affiliation:
Department of Inorganic Chemistry, University of Chemistry and Technology Prague, 166 28Prague 6, Czech Republic
Kateřina Rubešová
Affiliation:
Department of Inorganic Chemistry, University of Chemistry and Technology Prague, 166 28Prague 6, Czech Republic
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Cerium-doped lanthanum magnesium bulk aluminate (La1–xCexMgAl11O19, x = 0.03–0.50; abbreviated as LMA) was prepared via the Pechini sol–gel method after heating at 1200 °C for 2 h. The resulting single-phase ceramics was studied in terms of its structure using X-ray diffraction and optical properties using photoluminescence, its decay time, and radioluminescence spectroscopy. The diffraction and electron microscopy demonstrated LMA's plate-shaped nanocrystals with structure anisotropy and relatively broad particle size distribution. The optical measurements fully manifested the complexity of the LMA crystal structure. The radioluminescence study of cerium-doped LMA is here presented for the first time and, thus, contributes to the basic knowledge of Ce-doped materials. Additionally, the magnetic susceptibility exhibiting paramagnetic behavior of Ce3+ ions is presented. The magnetic data were interpreted in terms of local atomic Hamiltonian involving the crystal field and the Zeeman effect applied on the ground state J = 5/2 multiplet.

Keywords

sol–gelceramicluminescencemagnetic propertiesCecrystalline
Type
Invited Paper
Information
Journal of Materials Research , Volume 35 , Issue 13: Focus Section: Interactions of Shear Transformation Bands , 14 July 2020 , pp. 1672 - 1679
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Copyright
Copyright © Materials Research Society 2020

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