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The Microstructural Characterization of Multiferroic LaFeO₃-YMnO₃ Multilayers Grown on (001)- and (111)-SrTiO₃
Bin Pang1, Lei Sun2, Xuan Shen3
1National Laboratory of Solid State Microstructures & Department of Materials Science and Engineering, Nanjing University, Nanjing 210093, China. shasiyico@163.com.
Abstract:
The microstructure of multiferroic LaFeO₃-YMnO₃ (LFO-YMO) multilayers grown on (001)- and (111)-SrTiO₃ substrates is characterized by the transmission electron microscopy (TEM). Detailed TEM characterization reveals that LFO-YMO multilayers grown on both substrates have clear layer-by-layer morphology and distinct chemical-composition layered structure. The most notable feature is that LFO-YMO multilayers grown on (001)-SrTiO₃ substrate have three types of domains, while those on (111)-SrTiO₃ have only one. The multi-/twin- domain structure can be qualitatively explained by the lattice mismatch in this system. The details of the domain structure of LFO-YMO multilayers are crucial to understanding their magnetic properties.
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