The paramagnetic susceptibility of partially dehydrated cerium magnesium nitrate
| Autor: | G. J. Butterworth, C. B. P. Finn, K. Kiymac |
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| Rok vydání: | 1974 |
| Předmět: |
Materials science
Relaxation (NMR) Analytical chemistry chemistry.chemical_element Atmospheric temperature range Condensed Matter Physics Atomic and Molecular Physics and Optics law.invention Paramagnetism Cerium Magnesium nitrate chemistry.chemical_compound Curie's law Nuclear magnetic resonance chemistry law General Materials Science Curie constant Crystallization |
| Zdroj: | Journal of Low Temperature Physics. 15:537-545 |
| ISSN: | 1573-7357 0022-2291 |
| DOI: | 10.1007/bf00654625 |
| Popis: | The paramagnetic susceptibility of cerium magnesium nitrate (CMN) in varying states of hydration was measured between 1.4 and 4.2 K. An anomaly in the Curie law behavior of pure CMN observed near 2.2 K with an ac susceptibility bridge at 21 Hz is interpreted as an effect of spin-lattice relaxation. Apart from this anomaly, partially dehydrated powder samples of CMN were found to obey a Curie law within the temperature range studied but with increased values of the Curie constant. On removing 16 of the initial 24 water molecules of crystallization from CMN the Curie constant increases twofold, an effect that could carry implications regarding the use of CMN in precision magnetic thermometry. The enhancement of the Curie constant is believed to be due to changes in the crystalline field at the Ce3+ ion leading to an increase in theg factor associated with the ground doublet. |
| Databáze: | OpenAIRE |
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