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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/22811

Title: Aqueous chemical solution deposition of ultra high-k LuFeO3 thin films
Authors: Gielis, Sven
Ivanov, Maksim
Peys, Nick
van den Ham, Jonathan
Pavlovic, Nikolina
Banys, Juras
Hardy, An
Van Bael, Marlies K.
Issue Date: 2017
Abstract: Thin orthorhombic ultra high-k LuFeO3 (LFO) films on Si3N4/SiO2/Si substrates were obtained by means of aqueous chemical solution deposition (CSD). Prior to thin film deposition, the precursor synthesis, thermal decomposition and crystallization behavior of the bulk material were studied. It was shown that phase-pure hexagonal LFO powder could be formed at 650 degrees C while a higher temperature of 900 degrees C was required to obtain the orthorhombic phase. Deposition on SiO2/Si resulted in the development of silicates in this temperature range, thus preventing the formation of the orthorhombic LuFeO3 phase. The use of Si3N4/SiO2/Si as the substrate shifted the silicate formation to higher temperature, allowing the synthesis of phase-pure orthorhombic LuFeO3 as a thin film at 1000 degrees C. Impedance spectroscopy analyses confirmed its associated ultra high dielectric constant (>10,000) at room temperature for frequencies lower than or equal to 1 kHz.
Notes: [Gielis, Sven; Peys, Nick; van den Ham, E. Jonathan; Pavlovic, Nikolina; Hardy, An; Van Bael, Marlies K.] Hasselt Univ, Inst Mat Res, Diepenbeek, Belgium. [Gielis, Sven; Peys, Nick; van den Ham, E. Jonathan; Pavlovic, Nikolina; Hardy, An; Van Bael, Marlies K.] Hasselt Univ, IMEC Vzw, Div IMOMEC, Inorgan & Phys Chem, Diepenbeek, Belgium. [Ivanov, Maksim; Banys, Juras] Vilnius Univ, Fac Phys, Vilnius, Lithuania.
URI: http://hdl.handle.net/1942/22811
DOI: 10.1016/j.jeurceramsoc.2016.08.042
ISI #: 000386643900021
ISSN: 0955-2219
Category: A1
Type: Journal Contribution
Validation: ecoom, 2017
Appears in Collections: Research publications

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