Blar i NTNU Open på forfatter "Glaum, Julia"
-
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 ... -
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 ... -
Field Dependent Conductivity of Cyclohexane
Bærug, Håvard (Master thesis, 2020)I dette prosjektet har den feltavhengige ledningsevnen til sykloheksan blitt undersøkt med differensielle ladningsmåler og finite element modellering. Nøyaktige modeller for ledningsevnen til dielektriske materialer vil ... -
Freeze casting of piezoelectric BCZT for biomedical applications
Andersen, Freya Sofia (Master thesis, 2019)Bruken av piezoelektriske keramer som beinimplantat gir muligheten til å forsterke heling av skadet bein gjennom elektrisk stimulering in vivo. På denne måten kan rekonvalesenstiden og sannsynligheten for revisjonsutskiftninger ... -
Frequency dependent polarisation switching in h-ErMnO3
Ruff, Alexander; Li, Ziyu; Loidl, Alois; Schaab, Jakob; Fiebig, Manfred; Cano, Andres; Yan, Zewu; Bourret, Edith; Glaum, Julia; Meier, Dennis; Krohns, Stephan (Journal article; Peer reviewed, 2018)We report an electric-field poling study of the geometric-driven improper ferroelectric h-ErMnO3. From a detailed dielectric analysis we deduce the temperature and frequency dependent range for which single-crystalline ... -
Giant Functional Properties in Porous Electroceramics through Additive Manufacturing of Capillary Suspensions
Menne, David; Lemos Da Silva, Lucas; Rotan, Magnus; Glaum, Julia; Hinterstein, Manuel; Willenbacher, Norbert (Peer reviewed; Journal article, 2022)Dedicated hierarchical structuring of functional ceramics can be used to shift the limits of functionality. This work presents the manufacturing of highly open porous, hierarchically structured barium titanate ceramics ... -
High piezoelectricity by multiphase coexisting point: Barium titanate derivatives
Gao, Jinghui; Ke, Xiaoqin; Acosta, Matias; Glaum, Julia; Ren, Xiaobing (Journal article; Peer reviewed, 2018)BaTiO3-based lead-free piezoelectric materials have long been known as “a mediocre class of piezoelectric materials.” However, they have seen significant renewed interest in recent years ever since the discovery of high ... -
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 nanocomposites for high voltage insulation
Adnan, Mohammed Mostafa (Doctoral theses at NTNU;2022:36, Doctoral thesis, 2021)Rapid technological developments and the expanding scope of human activity has significantly increased energy demands. This has resulted in increasing requirements for insulation systems with improved dielectric, mechanical, ... -
In situ synthesis of epoxy nanocomposites with hierarchical surface-modified SiO2 clusters
Adnan, Mohammed Mostafa; Tveten, Erlend Grytli; Miranti, Rany; Hvidsten, Sverre; Ese, Marit-Helen Glomm; Glaum, Julia; Einarsrud, Mari-Ann (Peer reviewed; Journal article, 2020)Polymer nanocomposites are often produced using in situ approaches where an inorganic filler (as the dispersed phase) is synthesized directly in an organic matrix. Such an approach generally leads to improved dispersion and ... -
In situ synthesis of hybrid inorganic-polymer nanocomposites
Adnan, Mohammed Mostafa; Dalod, Antoine Robert Marie; Balci, Mustafa H; Glaum, Julia; Einarsrud, Mari-Ann (Journal article; Peer reviewed, 2018)Hybrid inorganic–polymer nanocomposites can be employed in diverse applications due to the potential combination of desired properties from both the organic and inorganic components. The use of novel bottom–up in situ ... -
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 ... -
In Vitro Biocompatibility of Piezoelectric K<inf>0.5</inf>Na<inf>0.5</inf>NbO<inf>3</inf>Thin Films on Platinized Silicon Substrates
Gaukås, Nikolai Helth; Huynh, Quy-Susan; Pratap, Anishchal A.; Einarsrud, Mari-Ann; Grande, Tor; Holsinger, R. M. Damian; Glaum, Julia (Peer reviewed; Journal article, 2020)Lead-free piezoelectric ceramics like K0.5Na0.5NbO3 (KNN) represent an emerging class of biomaterials for medical technology, as they can be used as components in implantable microelectromechanical systems (MEMS) and ... -
In-plane Ferroelectricity in Barium Titanate Films
Ræder, Trygve Magnus (Doctoral theses at NTNU;2020:201, Doctoral thesis, 2020)Ferroelectric materials are irreplaceable materials in electronics used everywhere in the modern society. The ferroelectric perovskites are the most widely used class of ferroelectric materials, and the use is dominated ... -
Influence of Artificial Porosity on Piezoelectric Behavior of (K,Na)NbO3 (KNN) Bulk Ceramics
Ommedal, Mari Berge (Master thesis, 2016)The influence of artificial porosity on the piezoelectric behaviour of KNN was studied for possible biomedical applications. A "piezoelectric effect" observed in bone is expected to trigger bone growth and healing. Therefore, ... -
The influence of low-temperature sterilization procedures on piezoelectric ceramics for biomedical applications
Rotan, Magnus; Zhuk, Mikalai; Boughton, Philip; Glaum, Julia (Peer reviewed; Journal article, 2021)Piezoelectric materials are intensively investigated for usage in biomedical applications ranging from in vivo sensors and energy harvesters to implants for bone and neural cell stimulation. Besides the high requirements ... -
Interface studies on BT-coatings on Ti-alloys using Atom Probe Tomography
Bjørø, Sondre Bolstad (Master thesis, 2021)Denne Master oppgaven tar for seg interfase studier av interfasen mellom laser teksturerte Ti6Al4V substrat og piezoelektriske tynnfilmer ved bruk av atom probe tomografi. Materialprøvene som blir brukt i denne oppgaven ... -
Interstitial oxygen as a source of p-type conductivity in hexagonal manganites
Skjærvø, Sandra Helen; Tjønneland Wefring, Espen; Nesdal, Silje K.; Gaukås, Nikolai Helth; Olsen, Gerhard Henning; Glaum, Julia; Tybell, Per Thomas Martin; Selbach, Sverre Magnus (Journal article; Peer reviewed, 2016)Hexagonal manganites, h-RMnO3 (R=Sc, Y, Ho–Lu), have been intensively studied for their multiferroic properties, magnetoelectric coupling, topological defects and electrically conducting domain walls. Although point defects ... -
Lead-Free Ferroelectric KNN Films for Biomedical Applications
Gaukås, Nikolai Helth (Doctoral theses at NTNU;2020:246, Doctoral thesis, 2020)Ferroelectric materials are utilized in a wide range of different electronic devices throughout our modern society, including all kinds of consumer electronics, ultrasound equipment, minimally invasive surgical tools and ... -
Lead-free piezoelectric materials for medical application
Dale, Silje Marie (Master thesis, 2018)In this work, K0.5Na0.5NbO3, (KNN) and K0.495Na0.495Ca0.005NbO3 thin films for biomedical applications have been prepared from an aqueous precursor solutions with 2.5 or 5.0 mol% of alkali excess. Ca2+ was introduced as ...