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On the energetics of cation ordering in tungsten-bronze-type oxides
(Journal article; Peer reviewed, 2015)
Oxides with the tetragonal tungsten bronze (TTB) structure are well-known ferroelectrics that show a large flexibility both with respect to chemical composition and cation ordering. Two of the simplest compounds in this ...
Origin of ferroelectric polarization in tetragonal tungsten-bronze-type oxides
(Journal article; Peer reviewed, 2016)
The origin of ferroelectric polarization in tetragonal tungsten-bronze- (TTB-) type oxide strontium barium niobate (SBN) is investigated using first-principles density functional calculations. We study in particular the ...
Role of Lone Pair Cations in Ferroelectric Tungsten Bronzes
(Journal article; Peer reviewed, 2017)
The role of lone pair cations in tetragonal tungsten bronze (TTB) ferroelectrics has so far not been addressed in detail despite the importance of lone pairs for the polarization mechanism in the prototype ferroelectric ...
Piezoelectric K0.5Na0.5NbO3 Ceramics Textured Using Needlelike K0.5Na0.5NbO3 Templates
(Journal article; Peer reviewed, 2014)
Improved performance by texturing has become attractive in the field of lead-free ferroelectrics, but the effect depends heavily on the degree of texture, type of preferred orientation, and whether the material is a rotator ...