Interface-mediated ferroelectric patterning and Mn valency in nano-structured PbTiO 3 /La 0.7 Sr 0.3 MnO 3

Abstract : We employed a multitechnique approach using piezo-force response microscopy and photoemission microscopy to investigate a self-organizing polarization domain pattern in PbTiO3/La0.7Sr0.3MnO3 (PTO/LSMO) nanostructures. The polarization is correlated with the nanostructure morphology as well as with the thickness and Mn valence of the LSMO template layer. On the LSMO dots, the PTO is upwards polarized, whereas outside the nanodots, the polarization appears both strain and interface roughness dependent. The results suggest that the electronic structure and strain of the PTO/LSMO interface contribute to determining the internal bias of the ferroelectric layer.
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Journal of Applied Physics, American Institute of Physics, 2016, 120 (9), 〈10.1063/1.4962007〉
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https://hal-cea.archives-ouvertes.fr/cea-01481488
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Soumis le : jeudi 2 mars 2017 - 16:30:20
Dernière modification le : jeudi 15 mars 2018 - 15:05:33

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Ingo P. Krug, Hatice Doganay, Nick Nickel, Daniel M. Gottlob, Claus M. Schneider, et al.. Interface-mediated ferroelectric patterning and Mn valency in nano-structured PbTiO 3 /La 0.7 Sr 0.3 MnO 3. Journal of Applied Physics, American Institute of Physics, 2016, 120 (9), 〈10.1063/1.4962007〉. 〈cea-01481488〉

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