Crystal growth, structure, magnetic properties and theoretical exchange interaction calculations of Cu2MnBO5
| Autor: | Katerina Medjanik, S. N. Sofronova, Alexey Veligzhanin, Vadim Ksenofontov, I. I. Nazarenko, E. M. Moshkina, Yu. V. Seryotkin, L. N. Bezmaternykh, Sergej A. Nepijko |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Magnetism Exchange interaction Crystal growth 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Magnetic susceptibility Electronic Optical and Magnetic Materials Crystal Nuclear magnetic resonance Chemical physics Phase (matter) 0103 physical sciences engineering 010306 general physics 0210 nano-technology Ludwigite Monoclinic crystal system |
| Zdroj: | Journal of Magnetism and Magnetic Materials. 420:309-316 |
| ISSN: | 0304-8853 |
| Popis: | Single crystals of ludwigite Cu2MnBO5 were synthesized by flux growth technique. The detailed structural and magnetic characterizations of the synthesized samples have been carried out. The cations composition of the studied crystal was determined using X-ray diffraction and EXAFS technique, the resulting composition differ from the content of the initial Mn2O3–CuO components of the flux. Magnetic susceptibility measurements and the calculations of the exchange integrals in frameworks of indirect coupling model revealed that monoclinic distortions strongly affect exchange interactions and appearance of magnetic ordering phase at the temperature T=93 K. The hypothesis of the existence of several magnetic subsystems was supposed. |
| Databáze: | OpenAIRE |
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