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Sutter, J.G.; Sarmiento Chavez, A.; Soria,; Granada, M.; Neñer, L.; Bengió, S.; Granel, P.; Golmar, F.; Haberkorn, H.; Leyva, G.; Sirena, M. |
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Stress and disorder effect in the physical properties of artificially engineered multiferroic superlattices |
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Journal Article |
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2021 |
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Materials Chemistry and Physics |
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Materials Chemistry and Physics |
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271 |
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124910 |
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Abstract |
La0·8Ba0·2MnO3, Ba0·25Sr0·75TiO3 and BaTiO3 superlattices were grown to study the influence of structural disorder on the physical properties of multiferroic multilayers. Controlling the lattice mismatch of the superlattices allowed growing structures with different growth mechanisms. The manganite layers in the samples were used as “sensor layers”, that respond to the structural changes in the superlattices, induced by changing the thickness and nature of the ferroelectric layers. Stress has a weak influence on the magnetic properties of these systems. Transport properties are characterized by a high temperature thermally activated regime and a low temperature variable hopping one. The strain and structural disorder in the samples increases the localization energy of the current carriers for both regimes. Important interface effects can be achieved controlling the strain and disorder in the interfaces, allowing tuning the metal-insulator transition temperature. These results help to further understand the role of interface effects in the development of manganite based ferromagnetic/ferroelectric multilayered systems. |
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0254-0584 |
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BT @ pedrazp @ |
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875 |
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