Browsing NTNU Open by Author "Glaum, Julia"
Now showing items 41-58 of 58
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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 ... -
Modulus spectroscopy for the detection of parallel electric responses in electroceramics
Frömling, Til; Liu, Yao; Hoang, An-Phuc; Gehringer, Maximilian; Steiner, Sebastian; Zhuk, Mikalai; Glaum, Julia; Xu, Bai-Xiang (Journal article; Peer reviewed, 2021)Impedance spectroscopy has become one of the most versatile and essential investigation methods concerning electrical properties of materials for electronic and energy applications. Deriving knowledge about physical ... -
Novel synthesis method of BaTiO3-nanoparticles - Synthesis of BaTiO3-nanoparticles by spray-pyrolysis of TiO2-nanoparticles dispersed in Ba(NO3)2-solution
Gryteselv, Magnus (Master thesis, 2016)Ferroelectric materials are widely used in different technological applications. Lead zirconate titanate (PZT) materials are currently the most used, due to their excellent piezoelectric properties and relatively high ... -
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, ... -
Optimization of Hemocompatible Thin Film Coatings for Biomedical Applications
Kjørholt, Kari Ravnestad (Master thesis, 2021)Bruken av biomedisinsk utstyr har gitt store fordeler til den menneskelige befolkningen i tiårene siden det vitenskapelige feltet først ble utviklet. Bio- og hemokompatibiliteten til eksisterende utstyr burde derimot ... -
Orthorhombic-tetragonal phase transition induced by Ta isovalent doping and its effect on fatigue characteristics of KNL-NSTx ceramics
Namsar, Orapim; Uthaisar, Chunmanus; Glaum, Julia; Pojprapai, Soodkhet (Journal article; Peer reviewed, 2018)The effect of Ta addition on the bipolar fatigue characteristics of lead-free KNL-NSTx ceramics (x = 0, 0.04, 0.07 and 0.11 mol%) is studied. Bipolar cycling up to 1 × 106 cycles leads to strong degradation of the polarization ... -
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) -
Oxygen absorption in hexagonal manganites
Danmo, Frida Hemstad (Doctoral theses at NTNU;2023:192, Doctoral thesis, 2023)Oxygen is one of the worlds most used chemicals, with over 100 million tons of pure O2 being used for industrial and medical purposes each year. The demand for O2 is high, and expected to rise even further due to its ... -
Oxygen Absorption in Nanocrystalline h-RMnO<inf>3</inf> (R = Y, Ho, Dy) and the Effect of Ti Donor Doping
Danmo, Frida Hemstad; Williamson, Benjamin Albert Dobson; Småbråten, Didrik Rene; Gaukås, Nikolai Helth; Østli, Elise Ramleth; Grande, Tor; Glaum, Julia; Selbach, Sverre Magnus (Journal article; Peer reviewed, 2023) -
Piezoelectricity and rotostriction through polar and non-polar coupled instabilities in bismuth-based piezoceramics
Acosta, Matias; Schmitt, Ljubomira Ana; Cazorla, Claudio; Studer, Andrew; Zintler, Alexander; Glaum, Julia; Kleebe, Hans-Joachim; Donner, Wolfgang; Hoffman, Mark; Rödel, Jurgen; Hinterstein, Manuel (Peer reviewed; Journal article, 2016)Coupling of order parameters provides a means to tune functionality in advanced materials including multiferroics, superconductors, and ionic conductors. We demonstrate that the response of a frustrated ferroelectric state ... -
Potassium sodium niobate as sintered ceramics and aerosol deposited coating for biomedical applications
Larsen, Angelica Marie Maza (Master thesis, 2021)Målet med denne masteroppgaven har vært å undersøke muligheten for å bruke kalium-natrium niobat (KNN) som et piezoelektrisk keramisk belegg for beinimplantater. Arbeidet har også satt søkelys på sekundærfasen K4Nb6O17 som ... -
Revealing the role of local stress on the depolarization of BNT-BT-based relaxors
Glaum, Julia; Heo, Yooun; Acosta, Matias; Sharma, Pankaj; Seidel, Jan; Hinterstein, Manuel (Journal article; Peer reviewed, 2019)Canonical relaxors exhibit an electric-field-induced phase transition between a macroscopically nonpolar and polar phase that can be tuned from being stable at low temperature to being reversible at high temperature. The ... -
Room-temperature dissolution behaviour of barium titanate - effects of flowing vs. static soaking conditions
Ryan-Øye, Kyrre (Master thesis, 2023)I denne avhandlingen har løselighetsevnen til sintrede bariumtitanatprøver i vandige løsninger blitt undersøkt for å evaluere bariumtitanats potensiale som et mulig biomateriale. Bariumtitanat er et piezoelektrisk keram, ... -
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 ... -
Study of Piezoelectric and Mechanical Properties of Porous Barium Titanate Ceramics for Biomedical Applications
Fedje, Karianne Skaar (Master thesis, 2017)Throughout the last decades, the development of bioactive materials to be used as bone implants has been a very active research area. The number of surgeries related to bone implants are steadily increasing, such that ... -
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 ... -
The effect of soaking and electrical poling on domain structure and chemical surface properties of ferroelectric implant materials
Holum, Vetle (Master thesis, 2023)Målet med denne masteravhandlingen er å produsere bariumtitanat (BT, BaTiO3 ), påføre elektrisk ladning til (polarisere) materialet og bløtlegge det i ulike væskemedier. Dette gjøres for å studere hvordan væskene og den ... -
Theoretical and Experimental Determination of Thermomechanical Properties of Epoxy-SiO2 Nanocomposites
Adnan, Mohammed Mostafa; Kroyan, Arpenik; Srivastava, Chaman; Grammatikos, Sotirios; Glaum, Julia; Ese, Marit-Helen Glomm; Schnell, Sondre Kvalvåg; Einarsrud, Mari-Ann (Peer reviewed; Journal article, 2023)Improvements in the thermomechanicalproperties of epoxy upon inclusion of well-dispersed SiO2nanoparticles have been demonstrated both experimentally and through molecular dynamics simulations.The SiO2was represented by ...