000198041 001__ 198041
000198041 005__ 20181203023451.0
000198041 0247_ $$2doi$$a10.1103/PhysRevB.89.060101
000198041 022__ $$a1098-0121
000198041 02470 $$2ISI$$a000332372000001
000198041 037__ $$aARTICLE
000198041 245__ $$aClosed-circuit domain quadruplets in BaTiO3 nanorods embedded in a SrTiO3 film
000198041 260__ $$bAmer Physical Soc$$c2014$$aCollege Pk
000198041 269__ $$a2014
000198041 300__ $$a5
000198041 336__ $$aJournal Articles
000198041 520__ $$aCylindrical BaTiO3 nanorods embedded in < 100 >-oriented SrTiO3 epitaxial film in a brushlike configuration are investigated in the framework of the Ginzburg-Landau-Devonshire model. It is shown that strain compatibility at BaTiO3/SrTiO3 interfaces keeps BaTiO3 nanorods in the rhombohedral phase even at room temperature. Depolarization field at the BaTiO3/SrTiO3 interfaces is reduced by an emission of the 109 degrees or 71 degrees domain boundaries. In case of 10-80-nm diameter nanorods, the ferroelectric domains are found to form a quadruplet with a robust flux-closure arrangement of the in-plane components of the spontaneous polarization. The out-of-plane components of the polarization are either balanced or oriented up or down along the nanorod axis. Switching of the out-of-plane polarization with coercive field of about 5 x 10(6) V/m occurs as a collapse of a 71 degrees cylindrical domain boundary formed at the curved circumference surface of the nanorod. The remnant domain quadruplet configuration is chiral, with the C-4 macroscopic symmetry. More complex stable domain configurations with coexisting clockwise and anticlockwise quadruplets contain interesting arrangement of strongly curved 71 degrees boundaries.
000198041 700__ $$uAcad Sci Czech Republic, Inst Phys, Prague 18221 8, Czech Republic$$aStepkova, V.
000198041 700__ $$uAcad Sci Czech Republic, Inst Phys, Prague 18221 8, Czech Republic$$aMarton, P.
000198041 700__ $$0240019$$g106416$$aSetter, N.
000198041 700__ $$aHlinka, J.$$uAcad Sci Czech Republic, Inst Phys, Prague 18221 8, Czech Republic
000198041 773__ $$j89$$tPhysical Review B$$k6
000198041 909C0 $$xU10334$$0252012$$pLC
000198041 909CO $$pSTI$$particle$$ooai:infoscience.tind.io:198041
000198041 917Z8 $$x106416
000198041 937__ $$aEPFL-ARTICLE-198041
000198041 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000198041 980__ $$aARTICLE