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26 Dec 2011

Volume 99, Issue 26, Articles (26xxxx)

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Appl. Phys. Lett. 99, 261101 (2011); http://dx.doi.org/10.1063/1.3660243 (3 pages)

T. Schwarzbäck, H. Kahle, M. Eichfelder, R. Roßbach, M. Jetter, and P. Michler
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Comparative study on aging effect in BiFeO3 thin films substituted at A- and B-sites

Xi Wang, Guangda Hu, Ling Cheng, Changhong Yang, and Weibing Wu

Appl. Phys. Lett. 99, 262901 (2011); http://dx.doi.org/10.1063/1.3672212 (3 pages) | Cited 4 times

Online Publication Date: 27 December 2011

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Typical characteristics of aging effect, double hysteresis loops, were observed in (100)pseudocubic-oriented Bi0.95Ca0.05FeO3 (BCFO) and BiFe0.95Ni0.05O3 (BFNO) films grown on LaNiO3(100)/Si substrates. The double hysteresis loops for BCFO film become less “constrained” with increasing applied voltage compared to that for BFNO, indicating that the aging effect is more severe in the latter. This can be demonstrated by the lower leakage current and smaller dielectric constant for BFNO. These phenomena are explained based on the crystal structure and defect chemistry.
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77.55.fp Other ferroelectric films
81.40.Cd Solid solution hardening, precipitation hardening, and dispersion hardening; aging
77.22.Ch Permittivity (dielectric function)
77.80.Dj Domain structure; hysteresis
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