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Structure and electric transport in LaCo.sub.0.67./sub.Cu.sub.0.33./sub.O.sub.3./sub..
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SYSNO ASEP 0359398 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Structure and electric transport in LaCo0.67Cu0.33O3. Author(s) Dlouhá, M. (CZ)
Hejtmánek, Jiří (FZU-D) RID, ORCID
Jirák, Zdeněk (FZU-D) RID, ORCID, SAI
Knížek, Karel (FZU-D) RID, ORCID
Veverka, Miroslav (FZU-D) RID
Vratislav, S. (CZ)Source Title Journal of Superconductivity and Novel Magnetism. - : Springer - ISSN 1557-1939
Roč. 24, 1-2 (2011), s. 747-751Number of pages 5 s. Language eng - English Country US - United States Keywords electrical transpor ; variable range hopping ; transition metal oxides ; perovskite cobaltites ; neutron diffraction Subject RIV BM - Solid Matter Physics ; Magnetism R&D Projects GA202/09/0421 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z10100521 - FZU-D (2005-2011) UT WOS 000289855700124 DOI 10.1007/s10948-010-0966-7 Annotation The compound LaCo0.67Cu0.33O3.possessing the crystal structure of the rhombohedral perovskite type has been studied by means of the X-ray and neutron diffraction, magnetic and electric transport measurements. Four different regimes of the electric transport are identified in the course of temperature in the 3-1100 K range: (i) the variable range hopping at the lowest temperatures, (ii) a region of nearly constant thermopower and non-standard resistivity of power-law temperature dependence, followed by (iii) the resistivity and thermopower is of a conventional activated type known for classical hopping, and (iv) a gradual transition to a metallic-like transport at the highest temperatures. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2012
Number of the records: 1