Work

Influence of pulsed laser deposition growth conditions on the thermoelectric properties of Ca3Co4O9 thin films

Year: 2004

Type: article

Abstract: Thin films of the misfit cobaltite Ca3Co4O9 were grown on (0001)-oriented (c cut) sapphire substrates, using pulsed-laser deposition techniques. The dependence of the thermoelectric/transport properties on the film growth conditions was investigated. The optimal conditions (for low resistivities) were found to be 600°C, 0.1–0.2mbar of oxygen pressure, and 1.7J∕cm2. These films exhibited slightly metallic behavior, consistent with in-plane resistivity curves of single crystals and c-axis magnetically aligned samples. Hall effect measurements showed the density of the holelike carriers was 6.8×1020∕cm3. The in-plane epitaxial relationship between the thin film and the sapphire substrate is investigated.

Source: Journal of Applied Physics

DOI: 10.1063/1.1823582

Authors: Hank W. Eng, W. Prellier, S. Hébert, D. Grebille, L. Méchin, B. Mercey

Institutions: Centre National de la Recherche Scientifique, École Nationale Supérieure d'Ingénieurs de Caen, Laboratoire de Cristallographie et Sciences des Matériaux, GREYC

Language: English

Topic: Advanced Thermoelectric Materials and Devices

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funders: Centre National de la Recherche Scientifique, Région Normandie

OpenAlex ID: W1570765649

FWCI: 2.839

Cites: 22

Cited by: 47

Related to: 10