Browsing NTNU Open by Author "Bakken, Kristine"
Now showing items 1-11 of 11
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Crystallization and Texturing of SrxBa1–xNb2O6 Thin Films Prepared by Aqueous Solution Deposition─An In Situ X-ray Diffraction Study
Pedersen, Viviann Hole; Blichfeld, Anders Bank; Bakken, Kristine; Chernyshov, Dmitry; Grande, Tor; Einarsrud, Mari-Ann (Peer reviewed; Journal article, 2022)Aqueous chemical solution deposition (CSD) is an environmentally friendly and highly flexible fabrication route to prepare oxide thin films. Here, we present an aqueous CSD process for ferroelectric SrxBa1–xNb2O6 (SBN) ... -
Enhanced in-plane ferroelectricity in BaTiO3 thin films fabricated by aqueous chemical solution deposition
Ræder, Trygve Magnus; Bakken, Kristine; Glaum, Julia; Einarsrud, Mari-Ann; Grande, Tor (Journal article; Peer reviewed, 2018)Ferroelectric BaTiO3 is widely used in capacitors, but the low Curie temperature limits a further use of BaTiO3. In this work we present an aqueous chemical solution deposition (CSD) route for BaTiO3 thin films, demonstrating ... -
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 ... -
In situ characterisation for studying nucleation and growth of nanostructured materials and thin films during liquid-based synthesis
Bakken, Kristine; Grendal, Ola Gjønnes; Einarsrud, Mari-Ann (Peer reviewed; Journal article, 2022)Knowledge about the nucleation, growth, and formation mechanisms during materials synthesis using sol-gel and solution-based methods is important to design a material with desired properties. We used aqueous chemical ... -
In situ Characterization of Ferroelectric Oxide Thin Films during Aqueous Chemical Solution Deposition
Bakken, Kristine (Doctoral theses at NTNU;2020:144, Doctoral thesis, 2020)Ferroelectric materials are used in a wide range of applications, including capacitors and non-linear optical devices. Utilization of ferroelectric thin films is especially desirable due to the possibility to tailor the ... -
In situ X-ray diffraction studies of the crystallization of K0. 5Na0. 5NbO3 powders and thin films from an aqueous synthesis route
Bakken, Kristine; Gaukås, Nikolai Helth; Grendal, Ola Gjønnes; Blichfeld, Anders Bank; Tominaka, Satoshi; Ohara, Koji; Chernyshov, Dmitry; Glaum, Julia; Grande, Tor; Einarsrud, Mari-Ann (Peer reviewed; Journal article, 2021)Aqueous chemical solution deposition is a promising route for ferroelectric K0.5Na0.5NbO3 (KNN) thin films, requiring a stable precursor solution with complexed Nb5+. Here, we report on the local structure of Nb-complexes ... -
Mechanisms for texture in BaTiO3 thin films from aqueous chemical solution deposition
Bakken, Kristine; Blichfeld, Anders Bank; Chernyshov, Dmitry; Grande, Tor; Glaum, Julia; Einarsrud, Mari-Ann (Journal article; Peer reviewed, 2020)The prototype piezoelectric material BaTiO3 is widely used in e.g., capacitators. Chemical solution deposition (CSD) of BaTiO3 films is a simple and environmentally friendly processing route, but insight in the crystallization ... -
On the formation mechanism of Ba0.85Ca0.15Zr0.1Ti0.15O3 thin films by aqueous chemical solution deposition
Khomyakova, Evgeniya; Wenner, Sigurd; Bakken, Kristine; Schultheiß, Jan; Grande, Tor; Glaum, Julia; Einarsrud, Mari-Ann (Journal article; Peer reviewed, 2020)Here we report on the development of an environmentally friendly, simple and robust aqueous chemical solution route for the fabrication of Ba0.85Ca0.15Zr0.1Ti0.9O3 (BCZT) thin films. Using a stable aqueous precursor solution, ... -
Sintering of lead-free piezoelectric materials
Bakken, Kristine (Master thesis, 2015)Piezoelectric ceramics are used in many types of devices, and today, lead zirconate titanate (PZT) dominates the market due to its superior properties. Environmental and health concerns have made the search for lead-free ... -
Structures and Role of the Intermediate Phases on the Crystallization of BaTiO3 from an Aqueous Synthesis Route
Bakken, Kristine; Pedersen, Viviann Hole; Blichfeld, Anders Bank; Nylund, Inger-Emma; Tominaka, Satoshi; Ohara, Koji; Grande, Tor; Einarsrud, Mari-Ann (Peer reviewed; Journal article, 2021)Carbonate formation is a prevailing challenge in synthesis of BaTiO3, especially through wet chemical synthesis routes. In this work, we report the phase evolution during thermal annealing of an aqueous BaTiO3 precursor ... -
Tailoring preferential orientation in BaTiO3-based thin films from aqueous chemical solution deposition
Bakken, Kristine; Blichfeld, Anders Bank; Nylund, Inger-Emma; Chernyshov, Dmitry; Glaum, Julia; Grande, Tor; Einarsrud, Mari-Ann (Journal article, 2021)Ferroelectric properties of thin films can be enhanced by crystallographic texture. In this work, we report on how heat treatment of films can be designed to tailor the degree of preferential orientation in BaTiO3-based ...