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Reorientation of defect dipoles in acceptor-modified single crystals: An electron paramagnetic resonance study
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10.1063/1.3006327
/content/aip/journal/apl/93/20/10.1063/1.3006327
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/20/10.1063/1.3006327
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Figures

Image of FIG. 1.
FIG. 1.

(a) Schematic of the poling process involving arrows for the spontaneous polarization (black) and the defect polarization (red). [(b) and (c)] Optical microscope images showing the domain configuration in the (b) initial multidomain and (c) poled single-domain states.

Image of FIG. 2.
FIG. 2.

-band (9.4 GHz) EPR spectra of the defect dipole center in a single crystal. (a) Initial multidomain state. (b) Poled single-domain state after a treatment of 1.5 kV/mm (250 V) at a temperature of for 4 h. The experimental spectra [(ii), bold] are compared with numerical spectrum simulations (iii, dashed). For the initial multidomain state (a) the spectrum is a superposition of two magnetically equivalent centers of different orientations [(i) and (iv)]; one being oriented parallel to the external magnetic field (i) and the other in perpendicular (iv). After poling (b) the single-domain state only consists of a center oriented parallel to the external magnetic field (iv).

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/content/aip/journal/apl/93/20/10.1063/1.3006327
2008-11-18
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Reorientation of (MnTi″−VO••)× defect dipoles in acceptor-modified BaTiO3 single crystals: An electron paramagnetic resonance study
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/20/10.1063/1.3006327
10.1063/1.3006327
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