Blar i Institutt for materialteknologi på tittel
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Faktorar som påverkar energiforbruket i ein Royalprosess
(Master thesis, 2023)Arbeidet med denne rapporten er gjort i samarbeid med Talgø MøreTre AS, og det eksperimentelle arbeidet vart utført deira i storskala Royalanlegg i Surnadal, Noreg. Føremålet med arbeidet var å sjå korleis energiforbruket ... -
A fast, low temperature synthesis method for hexagonal YMnO3: Kinetics, purity, size and shape as studied by in situ X-ray diffraction
(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 ... -
Fatigue of Extruded AA6082 and AA7108 Alloys - The Effects of Natural Ageing Compared to Artificial Ageing
(Master thesis, 2015)Heat treatable aluminium alloys might have the potential to gain unexpected increase in mechanical properties when stored at room temperature (natural ageing) after extrusion, for long periods of time. The main aim of the ... -
Fatigue of Welded AA6082 Alloys - Effects of PWHT and Shot Peening
(Master thesis, 2013)Aluminum is a metal widely used in areas such as a construction material in buildings, transportation,oil and gas industry, in packaging for preserving food and drink, electric cables, heatexchangers and many other areas. ... -
FDTD simulations of novel gain media
(Master thesis, 2014)Fourier-Laplace analysis of gain media predicts the existence of novel types of media. In particular it predicts the existence of media refracting positively and negatively at the same time, so-called simultaneous refraction. ... -
Fe and V substituted Li2MnSiO4/C As Potential Cathode Material for Li-Ion Batteries
(Journal article; Peer reviewed, 2015)Lithium transition-metal silicate materials are promising candidates for next generation Li-ion batteries since they allow Li extraction/insertion beyond one Li ion per formula unit. They consist of cheap, non-toxic and ... -
Feeding of Alumina in Molten Cryolite Bath
(Doctoral theses at NTNU;2023:21, Doctoral thesis, 2023)Alumina is the principal raw-material used for the production of aluminum in the Hall- Héroult process and is fed to the electrolytic bath in batches regularly. Maintaining a stable concentration in the bath is important ... -
Ferroelasticity, anelasticity and magnetoelastic relaxation in Co-doped iron pnictide: Ba(Fe0.957Co0.043)2As2
(Journal article; Peer reviewed, 2019)The hypothesis that strain has a permeating influence on ferroelastic, magnetic and superconducting transitions in 122 iron pnictides has been tested by investigating variations of the elastic and anelastic properties of ... -
Ferroelectric and dielectric properties of Ca2+-doped and Ca2+-Ti4+ co-doped K0.5Na0.5NbO3 thin films
(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 ... -
Ferroelectric Domain Engineering Using Structural Defect Ordering
(Peer reviewed; Journal article, 2022)Ferroelectrics have become indispensable in the development of energy-efficient oxide electronics. Their domain state is closely linked to the final device functionality, making domain engineering in technology-compatible ... -
Ferroelectric domain walls for nanotechnology
(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
(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
(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
(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
(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
(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
(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
(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
(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
(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 ...