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Domain switching energies: Mechanical versus electrical loading in La-doped bismuth ferrite–lead titanate
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10.1063/1.3555599
/content/aip/journal/jap/109/5/10.1063/1.3555599
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/5/10.1063/1.3555599
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Description of the origin of the remanent strain ɛ r , the maximum strain ɛmax, the back-switching strain (), the dissipated energy GM and the coercive stress σ c .

Image of FIG. 2.
FIG. 2.

(Color online) Evolution of the c/a ratio over the lanthanum doping concentration for different temperatures. The trend for each temperature is visualized using a line with an exponential fit on the measured data. (add another y axis showing the corresponding spontaneous strain) make lines a little thicker.

Image of FIG. 3.
FIG. 3.

(Color online) Selected stress–strain curves of 0, 7.5, 15, and 30 at. % La-doped samples measured at (a) room temperature, (b) 100 °C, and (c) 200 °C.

Image of FIG. 4.
FIG. 4.

(Color online) Coercive stress as a function of the c/a ratio for different temperatures. The numbers on the 25°C data points represent the respective lanthanum doping concentrations.

Image of FIG. 5.
FIG. 5.

(Color online) Evolution of (a) the remanent strain ɛ r , (b) the maximum strain ɛmax, (c) the back-switching strain (), and (d) the energy dissipated during one load cycle at room temperature, 100 °C, and 200 °C. The small numbers in each plot represent the La doping concentration.

Image of FIG. 6.
FIG. 6.

(Color online) (a) Normalized remanent strain ɛ r s and (b) normalized back-switching strain (ɛel r −ɛ r) s at room temperature, 100 °C, and 200 °C. The numbers represent the corresponding lanthanum concentration.

Image of FIG. 7.
FIG. 7.

Representative stress–strain curve obtained during cyclic loading of 0.57(Bi0.85La0.15)FeO3–0.43PbTiO3.

Image of FIG. 8.
FIG. 8.

(Color online) Poling curves for different maximum electric fields exemplarily shown for (a) 0.6(Bi0.95La0.05)FeO3–0.4PbTiO3 and (b) 0.57(Bi0.85La0.15)FeO3–0.43PbTiO3.

Image of FIG. 9.
FIG. 9.

(Color online) The mechanically dissipated energy as a function of maximum applied load (a), shown for six compositions in comparison to PZT, and the electrically dissipated energy as a function of the poling field shown for six compositions in comparison to PZT (Ref. 45).

Image of FIG. 10.
FIG. 10.

(Color online) (a) Mechanically dissipated energy and (b) electrically dissipated energy as a function of the c/a ratio. The numbers represent the corresponding lanthanum doping concentration.

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/content/aip/journal/jap/109/5/10.1063/1.3555599
2011-03-15
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Domain switching energies: Mechanical versus electrical loading in La-doped bismuth ferrite–lead titanate
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/5/10.1063/1.3555599
10.1063/1.3555599
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