التفاصيل البيبلوغرافية
| العنوان: |
Modified ferroelectricity in multiferroic Ba4Nd2Fe2Nb8O30 ceramics via atmosphere treatment. |
| المؤلفون: |
Li, Cheng, Hong, Jiang Sheng, Huang, Yu Hui, Ma, Xiao, Fu, Mao Sen, Li, Juan, Liu, Xiao Qiang, Wu, Yong Jun |
| المصدر: |
Journal of Materials Science: Materials in Electronics; Jul2022, Vol. 33 Issue 20, p16414-16424, 11p |
| مصطلحات موضوعية: |
TUNGSTEN bronze, FERROELECTRICITY, CERAMICS, HEAT treatment, HYSTERESIS loop, NEUTRON diffraction, LEAD titanate |
| مستخلص: |
Single-phase multiferroic Ba4Nd2Fe2Nb8O30 ceramics with the tetragonal tungsten bronze structure were synthesized. The dielectric, ferroelectric, and magnetic properties were systematically studied at room temperature, and the room-temperature multiferroic features were certified by the polarization–electric field hysteresis loops and magnetization-field curves in Ba4Nd2Fe2Nb8O30 ceramics. Interestingly, it was found that the ferroelectric polarization was enhanced by treating samples in non-oxidizing atmospheres, and the highest remnant polarization of 0.94 μC/cm2 can be found in the N2-annealed samples. The refined neutron powder diffraction results showed that the modified ferroelectricity was originated from the displacement of Fe3+/Nb5+ cations at B-sites rather than the oxygen vacancies. These results indicate that the heat treatment in controlled atmosphere is effective means to improve ferroelectricity in tetragonal tungsten bronze structure ceramics. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
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