Observation of the correlation between the phonon frequency and long-range magnetic ordering on a MnW octacyanide molecule-based magnet
| Autor: | Kouji Chiba, Naotaka Maeda, Hiroko Tokoro, Shin-ichi Ohkoshi, Kenta Imoto, Koji Nakabayashi |
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| Rok vydání: | 2021 |
| Předmět: |
Work (thermodynamics)
Range (particle radiation) Materials science Condensed matter physics Magnetic energy Phonon Elastic energy 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Bimetal Magnet Materials Chemistry Condensed Matter::Strongly Correlated Electrons Molecular orbital 0210 nano-technology |
| Zdroj: | Journal of Materials Chemistry C. 9:10689-10696 |
| ISSN: | 2050-7534 2050-7526 |
| DOI: | 10.1039/d1tc01048d |
| Popis: | We show an anomalous change in the phonon frequency at the magnetic phase transition on a cyanide-bridged bimetal assembly, Mn3[W(CN)8]2(pyrimidine)4·6H2O. This compound shows a frequency shift in the CN stretching mode below the magnetic phase transition temperature (TC). First-principles phonon mode calculation and molecular orbital calculation suggest that the frequency shift of the CN stretching mode is due to the competition of the magnetic energy and the elastic energy. This work demonstrates that a specific change in the phonon frequency is induced by long-range magnetic ordering in flexibly structured matter. |
| Databáze: | OpenAIRE |
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