TY  - JOUR
AU  - von Helden, Leonard
AU  - Schmidbauer, Martin
AU  - Liang, Sijia
AU  - Hanke, Michael
AU  - Wördenweber, Roger
AU  - Schwarzkopf, Jutta
TI  - Ferroelectric monoclinic phases in strained K 0.70 Na 0.30 NbO 3 thin films promoting selective surface acoustic wave propagation
JO  - Nanotechnology
VL  - 29
IS  - 41
SN  - 1361-6528
CY  - Bristol
PB  - IOP Publ.
M1  - FZJ-2018-04994
SP  - 415704 -
PY  - 2018
AB  - We present a detailed analysis of the ferroelectric domain structure of K0.70Na0.30NbO3 thin films on (110) TbScO3 grown by metal–organic chemical vapor deposition. Upon piezoresponse force microscopy and nanofocus x-ray diffraction measurements we derive a domain model revealing monoclinic MC domains. The complex domain pattern is formed out of four co-existing in-plane orientations of the shearing direction of the monoclinic unit cell resulting in four types of superdomains each being composed of well-ordered stripe domains. Finally, we present surface acoustic wave (SAW) experiments that exhibit extraordinary signal intensities given the low thickness of the tested film. Moreover, the SAW propagation is found to occur selectively along the identified shearing directions.
LB  - PUB:(DE-HGF)16
C6  - pmid:30024387
UR  - <Go to ISI:>//WOS:000441307900002
DO  - DOI:10.1088/1361-6528/aad485
UR  - https://juser.fz-juelich.de/record/851304
ER  -