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Effects of Dy and Mn Codoping on Ferroelectric Properties of BiFeO 3 Thin Films
Author(s) -
Do Dalhyun,
Kim Jin Won,
Kim Sang Su
Publication year - 2011
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2011.04720.x
Subject(s) - ferroelectricity , capacitor , thin film , materials science , polarization (electrochemistry) , coercivity , electric field , electrical engineering , optoelectronics , chemistry , voltage , nanotechnology , condensed matter physics , physics , engineering , dielectric , quantum mechanics
Ferroelectric properties of Dy and Mn codoped BiFeO 3 , ( Bi 1‐ x Dy x )( Fe 1‐ x Mn x ) O 3 ( BDFM ‐ x , x = 0, 0.02, 0.04, 0.06, 0.08, and 0.10), thin films were investigated. Improved ferroelectric properties were observed in the codoped thin film capacitors. Among them, BDFM ‐0.08 thin film capacitor exhibited the best properties. The remnant polarization (2 P r ) and coercive electric field (2 E c ) of the BDFM ‐0.08 thin film capacitor were 96 μC/cm 2 and 695 kV/cm at an applied electric field of 1061 kV/cm, respectively. The leakage current density of the BDFM ‐0.08 thin film capacitor was 8.3 × 10 −5 A/cm 2 at 400 kV/cm.