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Temperature-dependent vibrational spectroscopic and X-ray diffraction investigation of nanosized nickel chromite
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SYSNO ASEP 0448024 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Temperature-dependent vibrational spectroscopic and X-ray diffraction investigation of nanosized nickel chromite Author(s) Matulková, Irena (FZU-D) RID
Holec, Petr (UACH-T) SAI
Němec, I. (CZ)
Kitazawa, H. (JP)
Furubayashi, T. (JP)
Vejpravová, Jana (FZU-D) RID, ORCIDSource Title Journal of Molecular Structure. - : Elsevier - ISSN 0022-2860
Roč. 1090, Jun SI (2015), s. 70-75Number of pages 6 s. Language eng - English Country NL - Netherlands Keywords vibrational spectroscopy ; nickel chromite ; X-ray diffraction ; size effect Subject RIV BM - Solid Matter Physics ; Magnetism R&D Projects GAP108/10/1250 GA ČR - Czech Science Foundation (CSF) Institutional support FZU-D - RVO:68378271 ; UACH-T - RVO:61388980 UT WOS 000352678700013 EID SCOPUS 84925452450 DOI 10.1016/j.molstruc.2014.11.007 Annotation The nanocrystalline nickel chromite (NiCr2O4) with particle size of similar to 20 nm was prepared by autocombustion method. The nanocrystals were characterized by powder X-ray diffraction, vibrational spectroscopy and magnetic measurements. The expected structural phase transitions (cubic–tetragonal–orthorhombic) were studied by methods of temperature-dependent X-ray powder diffraction and vibrational spectroscopy. The evolution of the Raman spectra and X-ray diffraction patterns collected from 350 K down to 4 K confirmed the cubic-to-tetragonal distortion at similar to 250 K, whereas the tetragonalto-orthorhombic transition was not confirmed in the nanocrystalline sample. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2016
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