Magnetic and soft X-ray absorption spectroscopy characterization of Mn and Co doped lithium nickel phosphate LiNiPO4
| Autor: | Dina G. Kellerman, Yu. A. Barykina, V. V. Mesilov, V. R. Galakhov, N. V. Urusova, S. N. Shamin |
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| Rok vydání: | 2016 |
| Předmět: |
Valence (chemistry)
Absorption spectroscopy Band gap Doping Analytical chemistry chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Magnetic susceptibility 0104 chemical sciences Electronic Optical and Magnetic Materials chemistry Antiferromagnetism Condensed Matter::Strongly Correlated Electrons 0210 nano-technology Cobalt Néel temperature |
| Zdroj: | physica status solidi (b). 254:1600264 |
| ISSN: | 0370-1972 |
| DOI: | 10.1002/pssb.201600264 |
| Popis: | Measurements of magnetic susceptibility as a function of temperature and soft metal L2,3 and oxygen K X-ray absorption spectra were applied for the characterization of Mn and Co doped LiNiPO4. It was established on the basis of measurements of magnetic susceptibility as a function of temperature that the replacement of 10% of Ni by Mn in LiNiPO4 increases the antiferromagnetic phase transition temperature from 21.3 to 22.8 K, while the same amount of cobalt decreases the Neel temperature to 21.0 K. The experimental Ni, Mn, and Co L2,3 X-ray absorption spectra compared with the results of crystal field atomic multiplet calculations showed that Ni, Mn, and Co ions are in the 2 + valence states. According to our O K X-ray absorption spectra, there are no doping states in the band gap of Mn and Co doped lithium nickel phosphate. |
| Databáze: | OpenAIRE |
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