KIT | KIT-Bibliothek | Impressum | Datenschutz

Synthesis and characterization of dense, rare-earth based high entropy fluorite thin films

Kante, Mohana V. ORCID iD icon 1; Hahn, Horst 1; Bhattacharya, Subramshu S.; Velasco, Leonardo
1 Institut für Nanotechnologie (INT), Karlsruher Institut für Technologie (KIT)


High entropy oxides (HEOs) with 5 or more cations in equimolar proportions that result in a phase-pure material, are a new class of materials attracting a lot of attention in recent years. HEOs exhibit interesting optical, electrochemical, magnetic and catalytic properties. To get a comprehensive understanding of the physics behind the complex interactions taking place in these materials, it is important to evaluate the material in (near-fully) dense forms, such as pellets or thin films. The fluorite structured high entropy oxide, (CeLaSmPrY)O2−x has been investigated only in the powder form and there are no studies on the dense form of fluorite (CeLaSmPrY)O2−x. One of the main reasons is that (CeLaSmPrY)O2−x undergoes a structural transition from fluorite to bixbyite (at 1000 °C) and typically temperatures above the transition (>1200 °C) are required for achieving high densities via conventional sintering. In this study, we synthesize dense films of fluorite structured (CeLaSmPrY)O2−x by sol-gel as well as pulsed laser deposition processes. The films synthesized via sol-gel process exhibit equiaxed grains and polycrystalline morphology, whereas columnar and epitaxial films are obtained using pulsed laser deposition. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000160949
Veröffentlicht am 26.07.2023
DOI: 10.1016/j.jallcom.2023.169430
Zitationen: 6
Web of Science
Zitationen: 6
Zitationen: 6
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Nanotechnologie (INT)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 25.06.2023
Sprache Englisch
Identifikator ISSN: 0925-8388
KITopen-ID: 1000160949
HGF-Programm 43.31.01 (POF IV, LK 01) Multifunctionality Molecular Design & Material Architecture
Erschienen in Journal of Alloys and Compounds
Verlag Elsevier
Band 947
Seiten Art.-Nr. 169430
Vorab online veröffentlicht am 28.02.2023
Nachgewiesen in Web of Science
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
KITopen Landing Page