TY  - CONF
AU  - Matzen, Sylvia
AU  - Nesterov, Oleksiy
AU  - Rispens, Gijsbert
AU  - Heuver, Jeroen
AU  - Biegalski, Michael
AU  - Christen, Hans
AU  - Noheda, Beatriz
TI  - Super switching and control of in-plane Ferroelectric Nanodomains in strained thin Films
PB  - University of Groningen
M1  - PUBDB-2015-00206
PY  - 2014
AB  - Increasing miniaturization in ferroelectrics allows creating complex domain structures with novel functionalities particularly interesting for the development of nanoelectronic devices. Recently, exotic dipole arrangements forming flux-closures have been observed to occur spontaneously, mainly at crystal edges or in nano-objects, but their formation remains not fully understood. In this work, we use epitaxial strain in PbxSr1−xTiO3 ferroelectric thin films grown on (110)-DyScO3 to control a complex domain architecture at two scales with a purely in-plane polarization, that can be easily switched by a scanning probe. We show that periodic 90° a1-a2 stripe nanodomains self-organize into so-called ‘superdomains’ at larger scales. Unlike previous reports where significant depolarizing fields are expected to affect the domain formation, our results prove that these hierarchical domain arrangements, forming flux-closure states, can be stabilized in extended thin films, where strain-equivalent superdomains are created to emulate the single-domain ground state. Importantly, despite the inherent difficulty to switch in-plane polarizations, the hierarchical domain organization allows the polarization to be manipulated with the electric field available through a scanning probe, offering promising perspectives to design novel electronic devices based on thin films with vertical domain walls and no effect of depolarizing field.
T2  - European Materials Research Society Fall Meeting
CY  - 15 Sep 2014 - 19 Sep 2014, Warsaw (Poland)
Y2  - 15 Sep 2014 - 19 Sep 2014
M2  - Warsaw, Poland
LB  - PUB:(DE-HGF)6
UR  - https://bib-pubdb1.desy.de/record/205646
ER  -