TY  - JOUR
AU  - Rispens, Gijsbert
AU  - Ziegler, Benedikt
AU  - Paruch, Patrycja
AU  - Zanolli, Zeila
AU  - Íñiguez, Jorge
AU  - Ghosez, Philippe
TI  - Phase diagram of ${\mathrm{BiFeO}}_{3}/{\mathrm{LaFeO}}_{3}$ superlattices studied by x-ray diffraction experiments and first-principles calculations
JO  - Physical review / B
VL  - 90
IS  - 10
SN  - 1098-0121
CY  - College Park, Md.
PB  - APS
M1  - FZJ-2014-06839
SP  - 104106
PY  - 2014
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000342134200004
DO  - DOI:10.1103/PhysRevB.90.104106
UR  - https://juser.fz-juelich.de/record/175321
ER  -