4 papers · 1 filter
Resolving competing distortions in Ca0.4Sr0.6TiO3 using complementary electron and X-ray techniques
Robin Sjökvist, Catriona A. Crawford, Richard Beanland +1
We present a study of the perovskite Ca0.4Sr0.6TiO3 using variable temperature transmission electron microscopy (TEM) and powder X-ray diffraction (PXRD). At room temperature and b…
Near-room-temperature magnetoelectric coupling engineered through inversion-breaking tilts in a bulk perovskite polytype
Struan Simpson, Urmimala Dey, Martin R. Lees +3
Systematic strategies to design properties such as ferroelectricity or magnetoelectric coupling are well established in simple perovskite materials, but they remain scarce in more…
The Microscopic Structure of Stacking Faults in SrNaNbO
Robin Sjökvist, Yining Xie, Zabeada Aslam +4
Stacking faults and other topological defects in ferroics can have a significant influence on the electronic and mechanical properties of the material. Here, regular stacking fault…
Goldstone-mediated polar instability in hexagonal barium titanate
S. Simpson, U. Dey, R. J. Sjökvist +5
We discover a rare structural manifestation of the Goldstone paradigm in a hexagonal polytype of the archetypal ferroelectric BaTiO3. First-principles calculations confirm the Gold…