التفاصيل البيبلوغرافية
| العنوان: |
Tunable Magnetism of Na0.5Bi0.5TiO3 Materials via Fe Defects. |
| المؤلفون: |
Dung, D. D., Doan, N. B., Dung, N. Q., Linh, N. H., Bac, L. H., Thanh, L. T. H., Trung, N. N., Duc, N. V., Cuong, L. V., Thiet, D. V., Cho, S. |
| المصدر: |
Journal of Superconductivity & Novel Magnetism; Oct2019, Vol. 32 Issue 10, p3011-3018, 8p |
| مصطلحات موضوعية: |
DIAMAGNETISM, CRYSTAL field theory, MATERIALS, SUPERCONDUCTING quantum interference devices, FRONTIER orbitals, FERROMAGNETISM |
| مستخلص: |
The experimental procedure for the synthesis of undoped Na SB 0.5 sb Bi SB 0.5 sb TiO SB 3 sb and Fe-doped Na SB 0.5 sb Bi SB 0.5 sb TiO SB 3 sb was as follows: First, sodium nitrate, bismuth nitrate pentahydrate, and iron nitrate were completely dissolved in acetic acid and distilled water. The changed Raman spectra frequencies of Fe-doped Na SB 0.5 sb Bi SB 0.5 sb TiO SB 3 sb at the Ti-O band provided solid evidence that Fe is substituted at the Ti site. Therefore, we posited that the room temperature ferromagnetism of Fe-doped Na SB 0.5 sb Bi SB 0.5 sb TiO SB 3 sb compounds resulted from the exchange splitting of transition metal ions at octahedral sites and/or enhancement via oxygen vacancies. To investigate the origin of ferromagnetism in Fe-doped Na SB 0.5 sb Bi SB 0.5 sb TiO SB 3 sb samples, the first principle calculation was performed for Na SB 0.5 sb Bi SB 0.5 sb TiO SB 3 sb and Na SB 0.5 sb Bi SB 0.5 sb Ti SB 0.9375 sb Fe SB 0.0625 sb O SB 3 sb samples. [Extracted from the article] |
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| قاعدة البيانات: |
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