Details

Autor(en) / Beteiligte

• Sun, Wei
• Zhou, Zhen
• Li, Jing-Feng

Titel

Sol–gel-processed (001)-textured BiFeO 3 thin films on Pt(111)/Ti/SiO 2 /Si substrates with PbO seeding nanocrystals

Ist Teil von

• RSC advances, 2016, Vol.6 (1), p.489-494

Erscheinungsjahr

2016

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 50 to 200 nm-thick BiFeO 3 thin films were fabricated on Pt(111)/Ti/SiO 2 /Si substrates using the sol–gel method. A PbO seeding layer was introduced between the BiFeO 3 films and the platinum electrode surface, which was found to be effective for the formation of a (001)-textured BiFeO 3 structure. A high degree of (001) orientation up to 98.3% was achieved in a 200 nm-thick film via a layer-by-layer annealing process. Cross-section images by scanning electron microscopy revealed a columnar crystal structure, which was consistent with the high texturing degree enhanced by the layer-by-layer annealing method. By investigating the dielectric, ferroelectric and piezoelectric properties of the randomly oriented and (001)-oriented films, it was revealed that significant enhancements of the dielectric and piezoelectric properties were achieved in textured samples. The texturing mechanism was also discussed.