Blar i Institutt for materialteknologi på tittel

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    • Ferroelectric domain walls for nanotechnology 

      Meier, Dennis Gerhard; Selbach, Sverre Magnus (Journal article, 2021)
      Ferroelectric domain walls have emerged as a new type of interface in which the dynamic characteristics of ferroelectricity introduce the element of spatial mobility, allowing real-time adjustment of position, density and ...

    • Ferroelectric Transitions in SrxBa(1-x)Nb2O6 - Effect of Thermal History on the Functional Properties 

      Brandvik, Trond (Master thesis, 2015)
      Many functional materials used in todays electronic equipment have a high content lead. Due to the environmental challenges related to production and usage of such materials, extensive research has been preformed on lead-free ...

    • Ferroelectric Tungsten Bronzes 

      Olsen, Gerhard Henning (Doctoral thesis at NTNU;2016:237, Doctoral thesis, 2016)
      Ferroelectric materials are everywhere in the modern society, from consumer electronics to car engines. Applications cover a whole range of devices such as sensors, actuators and transducers due to their dielectric or ...

    • Ferroelectricity in the multiferroic hexagonal manganites 

      Lilienblum, Martin; Lottermoser, Thomas; Manz, Sebastian; Selbach, Sverre Magnus; Cano, Andres; Fiebig, Manfred (Journal article, 2015)
      Since their discovery in 1963 the hexagonal manganites have consolidated their role as exotic ferroelectrics with astonishing functionalities. Their introduction as room-temperature device ferroelectrics was followed by ...

    • Ferromanganese Production from Pretreated Manganese Ores: From Laboratory scale to Pilot scale 

      Mukono, Tichaona (Doctoral theses at NTNU;2023:25, Doctoral thesis, 2023)
      The production of high carbon ferromanganese (HCFeMn) alloys is an energy intensive process where manganese ores are smelted in a submerged arc furnace (SAF) using carbon reductants thereby generating CO2 emissions. In the ...

    • FIB and Functional Ferroics: Structuring and Correlated Microscopy 

      Roede, Erik Dobloug (Doctoral theses at NTNU;2022:156, Doctoral thesis, 2022)
      Norsk sammendrag FIB og funksjonelle ferroiske materialer For å fortsette utviklingen av raskere og mer energieffektiv elektronikk er vi nødt til å utnytte nye fysiske fenomener. I dette arbeidet studeres ferroiske ...

    • FIB lift-out of conducting ferroelectric domain walls in hexagonal manganites 

      Mosberg, Aleksander Buseth; Roede, Erik Dobloug; Evans, Donald; Holstad, Theodor S.; Bourret, Edith; Yan, Zewu; Van Helvoort, Antonius; Meier, Dennis (Journal article; Peer reviewed, 2019)
      A focused ion beam (FIB) methodology is developed to lift out suitable specimens containing charged domain walls in improper ferroelectric ErMnO3. The FIB procedure allows for extracting domain wall sections with well-defined ...

    • FIB lift-out of conducting ferroelectric domain walls in hexagonal manganites 

      Evans, Donald; Meier, Dennis; Mosberg, Aleksander Buseth; Roede, Erik Dobloug; Holstad, Theodor S.; Bourret, Edith; Yan, Zewu; Van Helvoort, Antonius (Journal article; Peer reviewed, 2019)
      A focused ion beam (FIB) methodology is developed to lift out suitable specimens containing charged domain walls in improper ferroelectric ErMnO3. The FIB procedure allows for extracting domain wall sections with well-defined ...

    • Fibre reinforced lightweight aggregates 

      Bernhardt, Markus; Tellesbø, Hilde; Justnes, Harald; Wiik, Kjell (Journal article; Peer reviewed, 2014)
      Carbon steel fibre reinforced lightweight aggregates (LWA) were produced in a pilot scale rotary kiln. Narrow size fractions as well as not-sieved (asreceived) material were investigated according to European standards ...

    • 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 ...

    • Filtration of aluminium : theory, mechanisms, and experiments 

      Frisvold, Frede (Dr. ingeniøravhandling; 1990:88, Doctoral thesis, 1990)

    • Filtration of Aluminium Melts using Ceramic Foam Filters (CFF) and Electromagnetic Field 

      Fritzsch, Robert (Master thesis, 2011)
      AbstractThe objective of the experimental trials was to investigate the influence of the electromagnetic force generated by an AC powered solenoid on ceramic foam filters (CFF) of different filter grades (30, 50 and 80 ...

    • Filtration of Aluminium-Experiments, Wetting,and Modelling 

      Bao, Sarina (Doktoravhandlinger ved NTNU, 1503-8181; 2011:, Doctoral thesis, 2011)
      The present work deals with the inclusion removal mechanism in aluminium filtration and the use of alternative filter materials. Four routes are investigated. First, an overview of previous research on filtration knowledge ...

    • Finite element analysis of strain distribution in ZK60 Mg alloy during cyclic extrusion and compression 

      Lin, Jinbao; Wang, Qudong; Liu, Manping; Chen, Yongjun; Roven, Hans Jørgen (Journal article; Peer reviewed, 2012)
      Finite element method was used to study the strain distribution in ZK60 Mg alloy during multi-pass cyclic extrusion and compression (CEC). In order to optimize the CEC processing, the effects of friction condition and die ...

    • Finite temperature ab initio simulations of the lattice thermal conductivity of XNiBi, X=(Sc, Y, La), based half-Heuslers 

      Røe, Ingeborg Treu (Master thesis, 2017)
      Over the past few years, the half-Heusler materials have attracted attention for their potential within thermoelectric applications. This is mainly due to the flexibility of half-Heusler crystal structure. The half-Heuslers ...

    • Finite-size effects of Kirkwood–Buff integrals from molecular simulations 

      Dawass, Noura; Kruger, Pieter; Schnell, Sondre Kvalvåg; Bedeaux, Dick; Kjelstrup, Signe; Simon, Jean Marc; Vlugt, Thijs (Journal article; Peer reviewed, 2017)
      The modelling of thermodynamic properties of liquids from local density fluctuations is relevant to many chemical and biological processes. The Kirkwood–Buff (KB) theory connects the microscopic structure of isotropic ...

    • First principles study of epitaxial strain induced phenomena and chemical expansion in perovskite oxides 

      Marthinsen, Astrid (Doctoral theses at NTNU;2018:285, Doctoral thesis, 2018)
      The many exotic properties found in complex oxides have great potential for device applications. Complex oxides within the perovskite structure are particularly attractive, as they display a large diversity of chemical ...

    • First-Principles Calculations of Oxygen Vacancy Formation in Epitaxially Strained La1-xCaxMnO3 

      Thøgersen, Rasmus Vester (Master thesis, 2016)
      Using epitaxial strain as a degree of freedom is a promising way to tailor the properties in thin films of transition metal oxides. Since the ground state of such materials tend to have many competing low-energy states ...

    • First-principles study of tensile and shear strength of Fe-Al and α-AlFeSi intermetallic compound interfaces 

      Khalid, Muhammad Zeeshan; Friis, Jesper; Ninive, Per Harald; Marthinsen, Knut; Strandlie, Are (Peer reviewed; Journal article, 2021)
      First-principles virtual tensile and shear strength calculations have been performed on the Fe2Al5// Fe4Al13 and -AlFeSi// Fe4Al13 interfaces. The Fast Inertial Relaxation Engine (FIRE) algorithm is used for optimizing ...

    • First-principles study of the effect of (111) strain on octahedral rotations and structural phases of LaAlO3 

      Moreau, Magnus; Marthinsen, Astrid; Selbach, Sverre Magnus; Tybell, Per Thomas Martin (Journal article; Peer reviewed, 2017)
      The structural and electronic response of LaAlO3 to biaxial strain in the (111) plane is studied by density functional theory (DFT) and compared with strain in the (001) plane and isostatic strain. For (111) strain, in-plane ...