Ion modification techniques for improving the insulating and ferroelectric properties of BiFeO 3 (BFO) thin films are reported. Rare-earth-substituted BFO films with chemical compositions of Bi 1.00- x RE x Fe 1.00 O 3 [RE = La and Nd] were fabricated on (111)Pt/TiO 2 /SiO 2 /(100)Si substrates using a chemical solution deposition technique. Well-saturated P - E curves were obtained for La 3+ - and Nd 3+ -substituted BFO films, while the curve of a nonsubstituted BFO film was distorted due to the leakage current. Remanent polarization ( P r ) values measured at 10 K were respectively 44 and 51 µC/cm 2 , for La 3+ - and Nd 3+ -substituted BFO films, which are significantly superior to conventional Pb-free ferroelectrics.
No takes yet. Share an insight, caveat, or question.
Uchida et al. (2005) studied this question.
Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context: