التفاصيل البيبلوغرافية
| العنوان: |
Colossal dielectric properties in (TaxSm1-x)0.04Ti0·96O2. |
| المؤلفون: |
Wang, X.W.1 (AUTHOR) wangxw@htu.edu.cn, Liang, B.K.1 (AUTHOR), Zheng, Y.P.1 (AUTHOR), Li, S.N.1 (AUTHOR), Liang, Y.F.1 (AUTHOR), Sun, Y.Q.1 (AUTHOR), Li, Y.Y.1 (AUTHOR), Shi, Y.C.1 (AUTHOR), Zhang, B.H.1,2 (AUTHOR), Shang, S.Y.1 (AUTHOR), Shang, J.1 (AUTHOR), Hu, Y.C.1 (AUTHOR), Yin, S.Q.1 (AUTHOR) |
| المصدر: |
Physica B. Dec2020, Vol. 598, pN.PAG-N.PAG. 1p. |
| مصطلحات موضوعية: |
*DIELECTRIC properties, *DIELECTRIC loss, *PERMITTIVITY, *RUTILE, *TITANIUM dioxide, *DIELECTRICS, *ELECTRIC capacity |
| مستخلص: |
In this study, (Ta x Sm 1-x) 0.04 Ti 0·96 O 2 (x = 0, 0.1, 0.4, 0.5, 0.6, 1.0; TSTO) were prepared via a standard solid state reaction method. The ceramics with x = 0.5 show the tetragonal rutile titanium dioxide structure, while ceramics with other components present the impurity phase. Notably, compared with x = 0.5 sample, the co-doped ceramics with more Sm3+ or Ta5+ show higher dielectric constant and lower dielectric loss at room temperature, which could be attributed to the formation of grain-boundary segregation. Moreover, the optimum ceramic, (Ta 0.1 Sm 0.9) 0.04 Ti 0·96 O 2 , has the dielectric constant of 1.8 × 105 with relative low dielectric loss and of 0.03 at room temperature and 1 kHz. The excessive doping of Ta5+ or Sm3+ can both improve the dielectric properties, which has developed a new idea for the research of giant dielectric ceramics. The colossal dielectric properties could be explained by the internal barrier layer capacitance (IBLC) model. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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