Article ID Journal Published Year Pages File Type
1506998 Solid State Sciences 2008 6 Pages PDF
Abstract

Electron-doped manganate phases were synthesised by ultrasonic spray combustion (USC) to investigate the magnetic and transport properties related to their morphology. The nanocrystallite microstructure obtained from the USC synthesis is characterized by the presence of twinned domains coexisting with ordered crystalline material. Classical solid state reaction (SSR) methods were applied to compare their thermoelectric activities with the USC compounds. Magnetic properties and thermopower exhibit different features between USC and SSR phases at low temperatures. At high temperatures the USC compounds display higher power factor values compared to SSR phases due to low resistivity and large thermopower values.

Graphical abstractElectron-doped manganate phases were synthesised by ultrasonic spray combustion (USC) to investigate the magnetic and transport properties related to their specific morphology and microstructure. Ultrafine crystalline perovskite particles formed typical hollow spheres. Nanocrystallites obtained from USC particles exhibit at low temperatures different magnetic and thermopower features compared to classical solid state reaction (SSR) compounds.Figure optionsDownload full-size imageDownload as PowerPoint slide

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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