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Heterogeneous phase formation in diluted magnetic semiconducting Zn(1-x-y)Co(x)Al(y)O (CAZO) nanoparticles
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SYSNO ASEP 0431850 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Heterogeneous phase formation in diluted magnetic semiconducting Zn(1-x-y)Co(x)Al(y)O (CAZO) nanoparticles Author(s) Siddheswaran, R. (CZ)
Medlín, R. (CZ)
Bělský, P. (CZ)
Vavruňková, V. (CZ)
Očenášek, J. (CZ)
David, Bohumil (UFM-A) RID
Šutta, P. (CZ)Number of authors 7 Source Title RSC Advances. - : Royal Society of Chemistry
Roč. 4, č. 45 (2014), s. 23405-23411Number of pages 7 s. Language eng - English Country GB - United Kingdom Keywords magnetic semiconductor ; magnetic measurements Subject RIV BM - Solid Matter Physics ; Magnetism Institutional support UFM-A - RVO:68081723 UT WOS 000337145900008 DOI 10.1039/C4RA02973A Annotation This article reports a systematic investigation of the synthesis and structural characterization of composite CAZO [(Zn(1-x-y)Co(x)Al(y)O; x = 0.04, 0.03, 0.02; y = 0.01, 0.02, 0.03)] nanoparticles from combustion. The crystalline phase, morphology, size, and structure were characterized using X-ray diffraction (XRD), small and wide angle X-ray scattering (SAXS/WAXS), scanning electron microscopy (SEM) and high resolution transmission electron microscopy (HR-TEM). The XRD and SAXS/WAXS analyses confirm the formation of the Co and Al co-doped ZnO hexagonal wurtzite structure with an additional metal oxide phase. The particle size and micro-strain were calculated by means of an integral breadth of X-ray diffraction lines. The selected area electron diffraction (SAED) patterns from TEM were correlated with the XRD patterns. The energy dispersive X-ray spectra (EDX) from SEM/TEM were recorded in order to analyze the composition of elements in the composite. The vibrational modes of the functional groups presented in the materials were assigned from FTIR and Raman spectra. The magnetic hysteresis measurement confirmed the room temperature ferromagnetism. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2015
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