Number of the records: 1
Temperature-dependent vibrational spectroscopic and X-ray diffraction investigation of nanosized nickel chromite
- 1.0448024 - FZÚ 2016 RIV NL eng J - Journal Article
Matulková, Irena - Holec, Petr - Němec, I. - Kitazawa, H. - Furubayashi, T. - Vejpravová, Jana
Temperature-dependent vibrational spectroscopic and X-ray diffraction investigation of nanosized nickel chromite.
Journal of Molecular Structure. Roč. 1090, Jun SI (2015), s. 70-75. ISSN 0022-2860. E-ISSN 1872-8014
R&D Projects: GA ČR GAP108/10/1250
Institutional support: RVO:68378271 ; RVO:61388980
Keywords : vibrational spectroscopy * nickel chromite * X-ray diffraction * size effect
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 1.780, year: 2015
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.
Permanent Link: http://hdl.handle.net/11104/0249769
Number of the records: 1