Publication

La1-xSrxCoO3 as electrode materials for ferroelectric thin film applications

Paul Muralt, Nicolas Ledermann
1998
Journal Articles

Abstract

PZT thin films for memory applications are known to lack sufficient resistance versus polarization fatigue when used together with platinum. One possible solution for this problem is to use conductive oxides like La1-xSrxCoO3 (LSCO) as an electrode. In this paper LSCO thin films were deposited via RF magnetron sputter deposition (face to face configuration) from a single oxide target. Changing the layer beneath LSCO at 750 degrees C and an RF Power of 50 W on SiO2/Si, the film is slightly (100) textured. A. strong (111) texture is established in case of a TiO2/Pt/TiO2/SiO2/Si. In contrary, a strong c-axis orientation could be observed on Pt/TiO2/SiO2/Si.

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https://infoscience.epfl.ch/entities/publication/e23aec6c-2b54-4ec8-9ce5-bf665aff2079

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Paul Muralt, Nicolas Ledermann
1998
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/e23aec6c-2b54-4ec8-9ce5-bf665aff2079

About this result

Related concepts (32)

Thin film

A thin film is a layer of material ranging from fractions of a nanometer (monolayer) to several micrometers in thickness. The controlled synthesis of materials as thin films (a process referred to as deposition) is a fundamental step in many applications. A familiar example is the household mirror, which typically has a thin metal coating on the back of a sheet of glass to form a reflective interface. The process of silvering was once commonly used to produce mirrors, while more recently the metal layer is deposited using techniques such as sputtering.

Electrode

An electrode is an electrical conductor used to make contact with a nonmetallic part of a circuit (e.g. a semiconductor, an electrolyte, a vacuum or air). Electrodes are essential parts of batteries that can consist of a variety of materials depending on the type of battery. The electrophore, invented by Johan Wilcke, was an early version of an electrode used to study static electricity. Electrodes are an essential part of any battery. The first electrochemical battery made was devised by Alessandro Volta and was aptly named the Voltaic cell.

Ferroelectricity

Ferroelectricity is a characteristic of certain materials that have a spontaneous electric polarization that can be reversed by the application of an external electric field. All ferroelectrics are also piezoelectric and pyroelectric, with the additional property that their natural electrical polarization is reversible. The term is used in analogy to ferromagnetism, in which a material exhibits a permanent magnetic moment. Ferromagnetism was already known when ferroelectricity was discovered in 1920 in Rochelle salt by Joseph Valasek.

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La1-xSrxCoO3 as electrode materials for ferroelectric thin film applications

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