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Raman spectroscopy and magnetic properties of KMCr(CN)6 under pressure |
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| Authors: | M. Zentková M. Vavra M. Mihalik Jr. J. Lazurová Z. Arnold |
| Affiliation: | 1. Institute of Experimental Physics, Slovak Academy of Sciences, Ko?ice, Slovak Republic;2. Faculty of Science, Institute of Chemistry, P. J. ?afarik University, Ko?ice, Slovak Republic;3. Institute of Physics AS CR, v.v.i., Na Slovance 2, 182 21 Prague, Czech Republic |
| Abstract: | We study the effect of pressure on Raman spectra as well on magnetic properties of molecule-based magnets KNiCr(CN)6 and KMnCr(CN)6. The effect of pressure on the ν[C≡N] vibration band which is located in the 2100–2200?cm?1 spectral range is relatively weak. Hydrostatic pressure has small almost a negligible effect on the Curie temperature of ferromagnetic KNiCr(CN)6 while leads to a pronounced reversible Curie temperature increase occurrence of new magnetic phase under pressure in the case of KMnCr(CN)6. Applied pressure affects magnetization curves only marginally. All pressure-induced changes are reversible. |
| Keywords: | Raman spectroscopy magnetic phase transition diamond anvil cell piston cylinder device |