Blar i Institutt for materialteknologi på forfatter "Aamlid, Solveig Stubmo"
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The Effect of Thermal History on the Structural and Dielectric Properties of Tetragonal Tungsten Bronzes
Aamlid, Solveig Stubmo (Master thesis, 2016)Tetragonal tungsten bronzes (TTB) are remarkable materials for their potential for chemical substitution and disorder. The niobates of this kind are usually ferroelectric, and they can comprise both ordered and disordered ... -
Hydrothermal synthesis of SrxBa1–xNb2O6 on nanostructured substrates
Einarsrud, Mari-Ann (Master thesis, 2019)I nyere tid har syntese av bly-frie ferroelektriske materialer tiltrukket seg stadig mer oppmerksomhet og et av de studerte materialene er strontium barium niobat (SBN). SBN har vist gode elektro-optiske egenskaper, samt ... -
Structural Evolution of Ferroelectric and Ferroelastic Barium Sodium Niobate Tungsten Bronze
Aamlid, Solveig Stubmo; Selbach, Sverre Magnus; Grande, Tor (Peer reviewed; Journal article, 2020)The crystal structure of the ferroelastic and ferroelectric tungsten bronze Ba2NaNb5O15 (BNN) has been debated. Here, we re-examine the crystal structure of BNN by ambient powder X-ray diffraction combined with density ... -
Structural Evolution of Ferroelectric and Ferroelastic Barium Sodium Niobate Tungsten Bronze
Aamlid, Solveig Stubmo; Selbach, Sverre Magnus; Grande, Tor (Peer reviewed; Journal article, 2020)The crystal structure of the ferroelastic and ferroelectric tungsten bronze Ba2NaNb5O15 (BNN) has been debated. Here, we re-examine the crystal structure of BNN by ambient powder X-ray diffraction combined with density ... -
Structure, disorder, and oxygen vacancies in ferroelectric tetragonal tungsten bronzes
Aamlid, Solveig Stubmo (Doctoral theses at NTNU;2020:349, Doctoral thesis, 2020)Ferroelectric materials are widely used materials in electronics due to their spontaneous and switchable polarization. The most common ferroelectric material on the market today is the lead-based perovskite PbZr1-xTixO3 ... -
Synthesis and Characterization of Lead-free Ferroelectric Tetragonal Tungsten Bronzes
Berger, Martin (Master thesis, 2020)Faststoffløsningen mellom de to blyfrie keramiske materialene med tetragonal wolframbronse-struktur, Ba4Na2Nb10O30 (BNN) og K4Bi2Nb10O30 (KBiN), ble studert. Studiens mål var å lete etter en morfotropisk faseovergang. ... -
The Effect of Cation Disorder on Ferroelectric Properties of SrxBa1xNb2O6 Tungsten Bronzes
Aamlid, Solveig Stubmo; Selbach, Sverre Magnus; Grande, Tor (Journal article; Peer reviewed, 2019)The versatile crystal structure of tetragonal tungsten bronzes (A12A24C4B10O30) can accommodate complex stoichiometries including cations in different valence states and vacant cation sites. Here, we report on the effect ...