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Colossal magnetoresistive manganites for sensing applications

Paolo Perna 1, 2, 3
3 Equipe Electronique - Laboratoire GREYC - UMR6072
GREYC - Groupe de Recherche en Informatique, Image, Automatique et Instrumentation de Caen
Abstract : The growth of high quality epitaxial La0.7Sr0.3MnO3 thin films was controlled on various substrates, including SrTiO3 (001), (110), vicinal substrates and Si. The design and development of applications such as uncooled bolometers and spintronic devices could then be considered. In this work, different deposition techniques were used: sputtering, pulsed laser deposition, assisted or not by RHEED (Reflection High Energy Electron Diffraction). The samples were characterized by X-ray diffraction, particularly studying epitaxy and strain in the layers. Further analyzes using RHEED, LEED (Low Energy Electron Diffraction), and STM/AFM (Scanning Tunneling and Atomic Force Microscopies) were also conducted, as well as resistivity and magnetization measurements as a function of the temperature. The effect of the orientation of the SrTiO3 substrate has been demonstrated. Finally, three examples of spintronic devices based on dead layer, vicinal surfaces or spin injection are presented.
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Submitted on : Tuesday, March 11, 2008 - 11:33:23 AM
Last modification on : Tuesday, February 5, 2019 - 12:12:43 PM
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  • HAL Id : tel-00262254, version 1

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Paolo Perna. Colossal magnetoresistive manganites for sensing applications. Condensed Matter [cond-mat]. Université de Caen; Università degli studi di Cassino, 2008. English. ⟨tel-00262254⟩

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