%0 Journal Article
%A Rispens, Gijsbert
%A Ziegler, Benedikt
%A Paruch, Patrycja
%A Zanolli, Zeila
%A Íñiguez, Jorge
%A Ghosez, Philippe
%T Phase diagram of ${\mathrm{BiFeO}}_{3}/{\mathrm{LaFeO}}_{3}$ superlattices studied by x-ray diffraction experiments and first-principles calculations
%J Physical review / B
%V 90
%N 10
%@ 1098-0121
%C College Park, Md.
%I APS
%M FZJ-2014-06839
%P 104106
%D 2014
%X Combining structural and functional measurements, we have mapped the phase diagram of BiFeO3/LaFeO3 superlattices grown by off-axis sputtering on (110)o DyScO3 substrates. The phase diagram displays three distinct regions as a function of BiFeO3 fraction, with a BiFeO3-like ferroelectric phase and a LaFeO3-like paraelectric phase at its extremities, and a complex intermediate region, as supported by first-principles calculations. This intermediate region shows unusual, mixed functional behavior, most likely due to competing phases driven by substitution with a same-size central ion and the specific boundary conditions imposed by the superlattice structure. In the BiFeO3 rich superlattices, scaling of the ferroelectric-to-paraelectric transition temperature with the BiFeO3 thickness could provide an alternate route for studying ferroelectric size effects in BiFeO3.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000342134200004
%R 10.1103/PhysRevB.90.104106
%U https://juser.fz-juelich.de/record/175321