Magnetotransport and magnetic properties of La0.7MnO3−δ and Pr0.65Ba0.05Ca0.3MnO3−δ superlattices
| العنوان: | Magnetotransport and magnetic properties of La0.7MnO3−δ and Pr0.65Ba0.05Ca0.3MnO3−δ superlattices |
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| المؤلفون: | Srinivas V. Pietambaram, D. Kumar, Rajiv K. Singh, Chong-Ki Lee |
| المصدر: | Applied Physics Letters. 78:243-245 |
| بيانات النشر: | AIP Publishing, 2001. |
| سنة النشر: | 2001 |
| مصطلحات موضوعية: | In situ, Materials science, Nuclear magnetic resonance, Physics and Astronomy (miscellaneous), Magnetoresistance, Ferromagnetism, Superlattice, Analytical chemistry, Biasing, Metal–insulator transition, Deposition (law), Pulsed laser deposition |
| الوصف: | Superlattice structures consisting of La0.7MnO3−δ (LMO) and Pr0.65Ba0.05Ca0.3MnO3−δ (PBCMO) systems, in which the thickness of La0.7MnO3−δ is fixed and that of Pr0.65Ba0.05Ca0.3MnO3−δ varied from 1 to 8 unit cells, have been grown in situ on (100) LaAlO3 substrates using a pulsed-laser deposition technique. Microstructural characterization carried out on these films shows the presence of characteristic intense satellite peaks, indicating the chemical modulation of the superlattice structure. The insulator-to-metal transition and the magnetoresistance (MR) ratio are found to vary with the number of unit cells. The samples with 1, 2, 5, and 8 unit cells of Pr0.65Ba0.05Ca0.3MnO3−δ show transition temperatures of 240, 230, 150, and 160 K and MR ratios of 540%, 592%, 3150%, and 2875%, respectively. We have observed an enhancement of magnetoresistance ratios in the case of superlattices with a thickness of PBCMO greater than 5 unit cells, which may be attributed to a ferromagnetic biasing provided by the LMO la... |
| تدمد: | 1077-3118 0003-6951 |
| DOI: | 10.1063/1.1338498 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::33b42045ed057551988cf51fa3575131 https://doi.org/10.1063/1.1338498 |
| رقم الانضمام: | edsair.doi...........33b42045ed057551988cf51fa3575131 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10773118 00036951 |
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| DOI: | 10.1063/1.1338498 |