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Ferroelectric Properties Of Bi3.25sm0.75v0.02t2.98o12 Thin Film At Elevated Temperature, Zhenxiang Cheng, Xiaolin Wang, S X. Dou, Kiyoshi Ozawa, Hideo Kimura
Ferroelectric Properties Of Bi3.25sm0.75v0.02t2.98o12 Thin Film At Elevated Temperature, Zhenxiang Cheng, Xiaolin Wang, S X. Dou, Kiyoshi Ozawa, Hideo Kimura
Australian Institute for Innovative Materials - Papers
The ferroelectric behavior in terms of electrical polarization and fatigue and dielectric properties at elevated temperature of the ferroelectric Bi3.25Sm0.75V0.02T2.98O12 thin film fabricated by the pulsed laser deposition method were studied. Its switchable polarization increased at elevated temperature, and the coercive field decreased at the same time due to the strong domain depinning process at higher temperature. This film shows almost a polarization-fatigue-free character at room temperature, but the aggregation and diffusion of the thermally activated long-range oxygen vacancies caused strong domain pinning, and thus a poor fatigue resistance was observed …
Room Temperature Magnetic-Field Manipulation Of Electrical Polarization In Multiferroic Thin Film Composite Bifeo3/La2/3ca1/3mno3, Zhenxiang Cheng, Xiaolin Wang
Room Temperature Magnetic-Field Manipulation Of Electrical Polarization In Multiferroic Thin Film Composite Bifeo3/La2/3ca1/3mno3, Zhenxiang Cheng, Xiaolin Wang
Australian Institute for Innovative Materials - Papers
The electrical polarization in an epitaxially BiFeO3 film grown on La2/3Ca1/3MnO3/SrTiO3 is observed to be enhanced greatly by a magnetic field at room temperature. The simultaneous ferromagnetic order and ferroelectric polarization shown by the BiFeO3 film causes the strong coupling of the magnetic and ferroelectric domains in the BiFeO3 films. It was proposed that the activation energy for the electrical polarization domains switching is reduced by the application of a magnetic field. As a result, the electrical polarization that can be switched by an electrical field is increased by the …
Kinetic Roughening Of Magnetic Flux Penetration In Mgb2 Thin Films, Andrea Lucarelli, Stephanie Hummert, Andrea Chaney, Gunter Lupke, Brian Moeckly, Yue Zhao, S X. Dou
Kinetic Roughening Of Magnetic Flux Penetration In Mgb2 Thin Films, Andrea Lucarelli, Stephanie Hummert, Andrea Chaney, Gunter Lupke, Brian Moeckly, Yue Zhao, S X. Dou
Australian Institute for Innovative Materials - Papers
Time-resolved magneto-optical studies are performed on MgB2 thin film samples grown by in situ pulsed laser deposition and in situ reactive deposition technique. The latter reveal dendritic avalanche-free flux penetration. The kinetic roughening of magnetic flux penetration is studied for applied ac current. Dynamic scaling laws determined for both static field and ac current are consistent with the directed percolation depinning model, placing the vortex dynamics in MgB2 in the same universality class as YBCO and Nb.