Academic Journal
Electron paramagnetic resonance of magnetoelectric Pb(Fe1∕2Nb1∕2)O3
| العنوان: | Electron paramagnetic resonance of magnetoelectric Pb(Fe1∕2Nb1∕2)O3 |
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| المؤلفون: | Blinc, R., Cevc, P., Zorko, A., Holc, J., Kosec, M., Trontelj, Z., Pirnat, J., Dalal, N., Ramachandran, V., Krzystek, J. |
| المصدر: | Journal of Applied Physics ; volume 101, issue 3 ; ISSN 0021-8979 1089-7550 |
| بيانات النشر: | AIP Publishing |
| سنة النشر: | 2007 |
| الوصف: | To check on the nature of the weak magnetic order in polycrystalline magnetoelectric Pb(Fe1∕2Nb1∕2)O3 the X-band, Q-band, and far infrared electron paramagnetic resonance (EPR) spectra have been measured between 4 and 600K and compared with magnetic susceptibility and magnetization data. The asymmetric line shapes can be simulated at higher temperature by thermally fluctuating superparamagnetic nanoclusters. The pronounced temperature dependence of the position of the spectra demonstrates the presence of an internal magnetic field which is small but nonzero even at room temperature, i.e., far above the antiferromagnetic transition. The electronic spin-spin exchange has been found to be in the terahertz range. The magnetization data reveal a weak ferromagnetism even above 300K and a break in the temperature dependence of susceptibility at the paramagnetic to ferromagnetic transition. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1063/1.2432309 |
| DOI: | 10.1063/1.2432309/13527342/033901_1_online.pdf |
| الاتاحة: | http://dx.doi.org/10.1063/1.2432309 https://pubs.aip.org/aip/jap/article-pdf/doi/10.1063/1.2432309/13527342/033901_1_online.pdf |
| رقم الانضمام: | edsbas.A19F0AE5 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1063/1.2432309 |
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