The micromagnetic study of the vanadate spinel MnV2O4 |
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Authors: | Yuanjie Huang Zhe Qu Yuheng Zhang |
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Institution: | High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Technology of China, Hefei 230026, China |
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Abstract: | MnV2O4 exhibits a paramagnetic to ferrimagnetic transition at 57 K and shows significant magnetic hysteresis below 55 K. By performing detailed powder X-ray diffraction at the same temperature during cooling and warming sequences, it is found that the magnetic hysteresis observed here is owing to strains induced by the structural phase separation. The intensity of the electron spin resonance spectra shows unusual temperature dependence, which might be related to the phase separation induced by the structural transition. By performing a mean field analysis, we obtained the exchange energies among the different magnetic moments and qualitatively understood the micromagnetic properties. |
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Keywords: | Heat hysteresis Phase separation Ferrimagnetism Transition |
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