Browsing NTNU Open by Author "Nylund, Inger-Emma"
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Anisotropic in-plane dielectric and ferroelectric properties of tensile-strained BaTiO3 films with three different crystallographic orientations
Ræder, Trygve Magnus; Holstad, Theodor Secanell; Nylund, Inger-Emma; Glaum, Julia; Einarsrud, Mari-Ann; Meier, Dennis; Grande, Tor (Peer reviewed; Journal article, 2021)Ferroelectric properties of films can be tailored by strain engineering, but a wider space for property engineering can be opened by including crystal anisotropy. Here, we demonstrate a huge anisotropy in the dielectric ... -
Cation Disorder in Ferroelectric Ba4M2Nb10O30 (M = Na, K, and Rb)Tetragonal Tungsten Bronzes
Nylund, Inger-Emma; Løndal, Nora Statle; Walker, Julian; Vullum, Per Erik; Einarsrud, Mari-Ann; Grande, Tor (Journal article; Peer reviewed, 2022) -
Centrosymmetric Tetragonal Tungsten Bronzes A4Bi2Nb10O30 (A = 2 Na, K, Rb) with a Bi 6s Lone Pair
Nylund, Inger-Emma; Zeiger, Caren Regine; Peng, Ding; Vullum, Per Erik; Walker, Julian; Einarsrud, Mari-Ann; Grande, Tor (Peer reviewed; Journal article, 2022)A first-principles study of the tetragonal tungsten bronze (TTB) K4Bi2Nb10O30 has suggested that the Bi 6s lone pair causes in-plane polarization (within the a–b plane), corresponding to the one found in Pb5Nb10O30 (PN), ... -
Combining LiNi0.5Mn1.5O4 Cathodes with Phosphonium-based Ionic Liquids in Li-ion Batteries
Malmer, Mika Serna (Master thesis, 2023)Denne avhandlingen har som mål å utvikle en alternativ elektrolytt for bruk med høyspenningkatodematerialet LiNi0.5Mn1.5O4 (LNMO) i Li-ion-batterier, med hensikt å erstatte karbonatbaserte elektrolytter med saltet LiPF6. ... -
Controlled growth of SrxBa1-xNb2O6 hopper- and cube-shaped nanostructures by hydrothermal synthesis
Grendal, Ola Gjønnes; Nylund, Inger-Emma; Blichfeld, Anders Bank; Tominaka, Satoshi; Ohara, Koji; Selbach, Sverre Magnus; Grande, Tor; Einarsrud, Mari-Ann (Journal article; Peer reviewed, 2020)Controlling the shape and size of nanostructured materials has been a topic of interest in the field of material science for decades. In this work, the ferroelectric material SrxBa1-xNb2O6 (x = 0.32–0.82, SBN) was prepared ... -
Controlled Growth of SrxBa1−xNb2O6 Hopper‐ and Cube‐Shaped Nanostructures by Hydrothermal Synthesis
Grendal, Ola Gjønnes; Nylund, Inger-Emma; Blichfeld, Anders Bank; Tominaka, Satoshi; Ohara, Koji; Selbach, Sverre Magnus; Grande, Tor; Einarsrud, Mari-Ann (Peer reviewed; Journal article, 2020)Controlling the shape and size of nanostructured materials has been a topic of interest in the field of material science for decades. In this work, the ferroelectric material SrxBa1−xNb2O6 (x=0.32–0.82, SBN) was prepared ... -
Correlating laser energy with compositional and atomic-level information of oxides in atom probe tomography
Hunnestad, Kasper Aas; Hatzoglou, hatzoglou; Vurpillot, F.; Nylund, Inger-Emma; Yan, Z.; Bourret, E.; Van Helvoort, Antonius; Meier, Dennis (Peer reviewed; Journal article, 2023)Atom probe tomography (APT) is a 3D analysis technique that offers unique chemical accuracy and sensitivity with sub-nanometer spatial resolution. There is an increasing interest in the application of APT to complex oxides ... -
Electron Microscopy Characterization of III-Nitride Nanowires grown on Graphene
Nylund, Inger-Emma (Master thesis, 2018)GaN nanowires grown on graphene glass using molecular beam epitaxy have been studied using scanning electron microscopy and different transmission electron microscopy techniques. The nanowires have an AlN nucleation particle ... -
Electronic Structure and Surface Chemistry of Hexagonal Boron Nitride on HOPG and Nickel Substrates
Småbråten, Didrik Rene; Nylund, Inger-Emma; Marshall, Kenneth; Walker, Julian Bradley; Benelmekki, Maria; Einarsrud, Mari-Ann; Kioseoglou, Joseph; Selbach, Sverre Magnus (Peer reviewed; Journal article, 2023)The effect of point defects and interactions with the substrate are shown by density functional theory calculations to be of significant importance for the structure and functional properties of hexagonal boron nitride ... -
Epitaxial (100), (110), and (111) BaTiO3 films on SrTiO3 substrates — A transmission electron microscopy study
Nylund, Inger-Emma; Ræder, Trygve Magnus; Vullum, Per Erik; Grande, Tor (Peer reviewed; Journal article, 2021)Chemical solution deposition (CSD) is a versatile method to fabricate oxide films. Here, the structure and local variations in the chemical composition of BaTiO3 (BTO) films prepared by CSD on (100), (110), and (111) SrTiO3 ... -
Insights on microstructural evolution and capacity fade on diatom SiO <inf>2</inf> anodes for lithium-ion batteries
Hua, Weicheng; Nylund, Inger-Emma; Cova, Federico Hector; Svensson, Ann Mari; Blanco, Maria Valeria (Peer reviewed; Journal article, 2023)is a promising material for developing high-capacity anodes for lithium-ion batteries (LIBs). However, microstructural changes of anodes at the particle and electrode level upon prolonged cycling remains unclear. In this ... -
Interphase Engineering of LiNi0.88Mn0.06Co0.06O2 Cathodes Using Octadecyl Phosphonic Acid Coupling Agents
Pollen, Harald Norrud; Nylund, Inger-Emma; Dahl, Øystein; Svensson, Ann Mari; Brandell, Daniel; Younesi, Reza; Tolchard, Julian R; Wagner, Nils Peter (Journal article; Peer reviewed, 2023)Ni-rich layered oxides are proven high-energy cathode materials for Li-ion batteries, but their characteristic short cycle life remains a challenge for implementation on a wider scale. The surface reactivity of Ni-rich ... -
LNMO as a cathode material in Li-ion batteries: Reasons for capacity fade and measures taken to prevent it
Nisja, Arnstein (Bachelor thesis, 2023)Lithium nikkel manganoksid (LNMO) er en lovende kandidat som katodemateriale i Li-ion batterier (LIBs) på grunn av sin høye energitetthet. Batterier med LNMO som katodemateriale kan oppleve kapsitetstap over tid grunnet ... -
Observation of cation-specific critical behavior at the improper ferroelectric phase transition in Gd2(MoO4)3
Nylund, Inger-Emma; Tsoutsouva, Maria; Grande, Tor; Meier, Dennis (Journal article; Peer reviewed, 2022) -
On the Viability of Lithium Bis(fluorosulfonyl)imide as Electrolyte Salt for Use in Lithium-Ion Capacitors
Schweigart, Philipp; Eleri, Obinna Egwu; Nylund, Inger-Emma; Lai, Samson Yuxiu; Lou, Fengliu; Svensson, Ann Mari (Peer reviewed; Journal article, 2023) -
Oxidation Kinetics of Nanocrystalline Hexagonal RMn<inf>1-x</inf>Ti<inf>x</inf>O<inf>3</inf> (R = Ho, Dy)
Danmo, Frida Hemstad; Nylund, Inger-Emma; Westermoen, Aamund; Marshall, Kenneth Paul; Stoian, Dragos; Grande, Tor; Glaum, Julia; Selbach, Sverre Magnus (Journal article; Peer reviewed, 2023) -
Side reactions on two types of carbon conductive additives in ionic liquid-based electrolytes for high voltage Li-ion battery cathodes
Langli, Helene Lillevestre (Master thesis, 2023)Litium-ionbatterier (LIBs) er et godt alternativ for energilagring i elektriske kjøretøy og stasjonær lagring, for eksempel sammen med solceller, i tillegg til å ha mange andre bruksområder. Selv om disse batteriene allerede ... -
STEM-EDS of Inception Sites of Vented Trees in a HV XLPE Subsea Cable
Hårberg, Sofie Brandtzæg; Nylund, Inger-Emma; Einarsrud, Mari-Ann; Vullum, Per Erik; Lesaint, Cedric Michel; Hvidsten, Sverre (Chapter, 2023)High voltage XLPE cable cores have been subjected to wet ageing following the recommendations in CIGRE TB 722. The electrical ageing was performed at 500 Hz and 10 kV/mm. Vented water trees were detected initiating and ... -
The Structure, Morphology, and Complex Permittivity of Epoxy Nanodielectrics with in Situ Synthesized Surface-Functionalized SiO2
Adnan, Mohammed Mostafa; Nylund, Inger-Emma; Jaworski, Aleksander; Hvidsten, Sverre; Ese, Marit-Helen Glomm; Glaum, Julia; Einarsrud, Mari-Ann (Peer reviewed; Journal article, 2021)Epoxy nanocomposites have demonstrated promising properties for high-voltage insulation applications. An in situ approach to the synthesis of epoxy-SiO2 nanocomposites was employed, where surface-functionalized SiO2 (up ... -
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 ...