Blar i NTNU Open på forfatter "Einarsrud, Mari-Ann"
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Experimental setup for high-temperature in situ studies of crystallization of thin films with atmosphere control
Blichfeld, Anders Bank; Bakken, Kristine; Chernyshov, Dmitry; Glaum, Julia; Grande, Tor; Einarsrud, Mari-Ann (Peer reviewed; Journal article, 2020)Understanding the crystallization process for chemical solution deposition (CSD) processed thin films is key in designing the fabrication strategy for obtaining high-quality devices. Here, an in situ sample environment is ... -
Fabrication of Lead-Free Bi0.5Na0.5TiO3 Thin Films by Aqueous Chemical Solution Deposition
Christensen, Mads J.; Einarsrud, Mari-Ann; Grande, Tor (Journal article; Peer reviewed, 2017)Piezoelectric ceramics are widely used in actuator applications, and currently the vast majority of these devices are based on Pb(Zr,Ti)O3 , which constitutes environmental and health hazards due to the toxicity of lead. ... -
Fabrication of lead-free ferroelectric thin films based on Bi0.5Na0.5TiO3 by aqueous chemical solution deposition
Christensen, Mads (Doctoral theses at NTNU;2017:326, Doctoral thesis, 2017)Since the discovery of piezoelectric ceramic materials in the mid-20th century, piezoelectric materials have become an important research field and is currently used in a whole range of applications such as sensors and ... -
Facile Low Temperature Hydrothermal Synthesis of BaTiO3 Nanoparticles Studied by In Situ X-ray Diffraction
Grendal, Ola Gjønnes; Blichfeld, Anders Bank; Skjærvø, Susanne Linn; van Beek, Wouter; Selbach, Sverre Magnus; Grande, Tor; Einarsrud, Mari-Ann (Journal article; Peer reviewed, 2018)Ferroelectric materials are crucial for today’s technological society and nanostructured ferroelectric materials are important for the downscaling of devices. Controlled and reproducible synthesis of these materials are, ... -
A fast, low temperature synthesis method for hexagonal YMnO3: Kinetics, purity, size and shape as studied by in situ X-ray diffraction
Marshall, Kenneth; Blichfeld, Anders Bank; Skjærvø, Susanne Linn; Grendal, Ola Gjønnes; Van Beek, Wouter; Selbach, Sverre Magnus; Grande, Tor; Einarsrud, Mari-Ann (Peer reviewed; Journal article, 2020)The reaction mechanisms, phase development and kinetics of the hydrothermal synthesis of hexagonal‐YMnO3 from Y2O3 and Mn2O3 using in situ X‐ray diffraction are reported under different reaction conditions with temperatures ... -
Ferroelectric and dielectric properties of Ca2+-doped and Ca2+-Ti4+ co-doped K0.5Na0.5NbO3 thin films
Gaukås, Nikolai Helth; Glaum, Julia; Einarsrud, Mari-Ann; Grande, Tor (Journal article; Peer reviewed, 2020)Chemical solution deposition (CSD) of K0.5Na0.5NbO3 (KNN) thin films on silicon-based substrates is an interesting technology for fabrication of lead-free ferroelectric thin films. Here, we report on improved ferroelectric ... -
Fluorescent Nanocomposites: Hollow Silica Microspheres with Embedded Carbon Dots
Delic, Asmira; Mariussen, Espen; Roede, Erik Dobloug; Krivokapic, Alexander; Erbe, Andreas; Lindgren, Mikael; Benelmekki, Maria; Einarsrud, Mari-Ann (Journal article; Peer reviewed, 2021)Intrinsically fluorescent carbon dots may form the basis for a safer and more accurate sensor technology for digital counting in bioanalytical assays. This work presents a simple and inexpensive synthesis method for producing ... -
Formation mechanism and growth of MNbO3,M=K, Na by in situ X-ray diffraction
Skjærvø, Susanne Linn; Sommer, Sanna; Nørby, Peter; Bøjesen, Espen Drath; Grande, Tor; Iversen, Bo B; Einarsrud, Mari-Ann (Journal article; Peer reviewed, 2017)Hydrothermal synthesis is a well-established method to produce complex oxides, and is a potential interesting approach to synthesize stoichiometric lead-free piezoelectric K0.5Na0.5NbO3. Due to challenges in obtaining the ... -
Functional Materials for a Sustainable Replacement of the Lithium-ion Battery
Dyve, Maiken Kollsgård (Bachelor thesis, 2023)De siste årene har det vært en økende bekymring rundt påvirkningen av fossile brennstoff på miljøet og behovet for bærekreaftige energikilder. Som et resultat av dette har viktigheten av fornybare energikilder som sol -, ... -
Functionalized TiO2 nanoparticles by single-step hydrothermal synthesis: the role of the silane coupling agents
Dalod, Antoine Robert Marie; Henriksen, Lars; Grande, Tor; Einarsrud, Mari-Ann (Journal article; Peer reviewed, 2017)A simple, robust and versatile hydrothermal synthesis route to in situ functionalized TiO2 nanoparticles was developed using titanium(IV) isopropoxide as Ti-precursor and selected silane coupling agents (3-aminopropyltri ... -
High capacity nanostructured Li2FexSiO4/C with Fe hyperstoichiometry for Li-ion batteries
Zhou, Haitao; Einarsrud, Mari-Ann; Vullum-Bruer, Fride (Journal article; Peer reviewed, 2013-02-17)Li2FeSiO4-based materials have attracted a great deal of interest as cathodes for lithium ion batteries for its excellent thermal stability and good cycling ability. Nanoporous Li2FeSiO4/C composites with varying Fe ... -
High-performance La0.5Ba0.5Co1/3Mn1/3Fe1/3O3-δ – BaZr1-zYzO3-δ cathode composites via exsolution mechanism for protonic ceramic fuel cells
Rioja-Monllor, Laura; Ricote, Sandrine; Bernuy-Lopez, Carlos; Grande, Tor; O'Hayre, Ryan P.; Einarsrud, Mari-Ann (Journal article; Peer reviewed, 2018)A novel exsolution process was used to fabricate complex all-oxide nanocomposite cathodes for protonic ceramic fuel cells (PCFCs). The nanocomposite cathodes with La0.5Ba0.5Co1/3Mn1/3Fe1/3O3-δ – BaZr1-zYzO3-δ nominal ... -
High-Temperature Performance of Selected Ionic Liquids as Electrolytes for Silicon Anodes in Li-ion Batteries
Rogstad, Daniel Tevik; Einarsrud, Mari-Ann; Svensson, Ann Mari (Peer reviewed; Journal article, 2022)Ionic liquids, like bis(fluorosulfonyl)imide (FSI) ionic liquids, are promising solvents for lithium ion batteries due to their high thermal stability and wide electrochemical window. Here, electrolytes based on LiFSI and ... -
Hot corrosion of Gd2Zr2O7, Gd2Zr2O7/YbSZ, YSZ+Gd2Zr2O7/YbSZ, and YSZ thermal barrier coatings exposed to Na2SO4+V2O5.
Tabeshfar, Mohadese; Salehi, Mehdi; Dini, Ghasem; Dahl, Paul Inge; Einarsrud, Mari-Ann; Wiik, Kjell (Peer reviewed; Journal article, 2020)Gd2Zr2O7 ceramic is considered as a potential candidate for thermal barrier coatings. Here we present hot corrosion behavior of single layer Gd2Zr2O7 (GZO), Gd2Zr2O7 + 50 wt% YbSZ (GZO/YbSZ), YSZ and double-layer ... -
Hybrid epoxy nanocomposites for high voltage application
Lien, Alexander Svalheim (Master thesis, 2022)Hybrid epoksy nanokompositter med uorganiske TiO2 eller Al2O3 nanopartikler som fyllmateriale har vist seg å ha utmerkede dielektriske egensk-\\aper og kan bli brukt som isolasjon i høyspenningsapplikasjoner. Epoksy ... -
Hybrid Nanocomposites for High Voltage Insulation
Dybdahl, Morten Steinsmo (Master thesis, 2019)Bruken av nanopartikler som fyllmateriale i organiske polymerer har vist seg å forbedre ønskede egenskaper i polymerer for høyspenningsinsolasjon. Det eksisterer mange ulike metoder for forberedelse av hybride nanokompositter ... -
Hydrothermal Synthesis of Alkali Niobates
Vadseth, Daniel Stormer (Master thesis, 2021)Reaksjonsforholdene under hydrotermal syntese av kalium- og natriumniobater har blitt undersøkt med hensikt å forstå effekten av reaksjonsforholdene på kinetikken, faseformasjonen, morfologien og gitteparametrene. Kalium ... -
Hydrothermal synthesis of hexagonal YMnO3 and YbMnO3 below 250 °C
Marshall, Kenneth Paul; Eidem, Sigurd Opdal; Småbråten, Didrik Rene; Selbach, Sverre Magnus; Grande, Tor; Einarsrud, Mari-Ann (Peer reviewed; Journal article, 2021)The hydrothermal synthesis of hexagonal YMnO3 and YbMnO3 are reported using high KOH mineraliser concentrations (>10 M) and low temperatures (<240 °C). The relation between reaction parameters and resulting phase purity ... -
Hydrothermal synthesis of SrxBa1–xNb2O6 on nanostructured substrates
Einarsrud, Mari-Ann (Master thesis, 2019)I nyere tid har syntese av bly-frie ferroelektriske materialer tiltrukket seg stadig mer oppmerksomhet og et av de studerte materialene er strontium barium niobat (SBN). SBN har vist gode elektro-optiske egenskaper, samt ... -
Improvement of surface properties of high pressure laminates
Rusu, Caterina Lesaint (Doctoral theses at NTNU;2018:59, Doctoral thesis, 2018)Laminated flooring is an important part of the decorative laminates market. High pressure laminates in particular are preferred products for flooring due to their outstanding properties such as fire and stain resistance, ...