Pinning of a ferroelectric Bloch wall at a paraelectric layer

• Vilgelmina Stepkova and
• Jiří Hlinka

Beilstein J. Nanotechnol. 2018, 9, 2356–2360, doi:10.3762/bjnano.9.220

• phenomena as the parent ferroelectric materials. For example, in the case of BaTiO3–SrTiO3 superlattices with only a few atomic layers of SrTiO3, the domain walls are simply expected to penetrate through BaTiO3/SrTiO3 interfaces [1][2][3][4][5]. In general, it can be expected that a small amount of

• ferroelectric Bloch wall passing through it. Thus, ferroelectric Bloch domain walls are shown to be ideal nanoscale objects with switchable properties. The reported results hint towards the possibility to exploit ferroelectric domain wall interaction with simple nanoscale devices. Keywords: BaTiO3–SrTiO3

• superlattices; ferroelectric domain walls; Ginzburg–Landau–Devonshire model; phase-field simulations; Introduction Nanometer-scale mixtures of paraelectric and ferroelectric materials in disordered solid solutions or in very fine artificial crystalline superlattices often show qualitatively similar domain