Enhanced ferroelectric and dielectric properties of Nb5+-doped Na0.5Bi0.5TiO3 thin film deposited under nitrogen annealing atmosphere

Yang, Changhong; Sui, Huiting; Wu, Haitao; Feng, Chao; Yao, Yuyu

doi:10.1016/j.ceramint.2015.03.022

Cited by 13 publications

(1 citation statement)

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“…Na 0.5 Bi 0.5 TiO 3 is a lead-free ferroelectric that has served as a base for extensively developing piezoelectric ceramics [4,5]. Among doping ions, divalent cations, such as Mg 2þ [6], Ca 2þ [7], Sr 2þ [8], and Ba 2þ [9], transition metals ions, such as Mn 2þ [10], Fe 2þ [11], Co 2þ [12], Ni 2þ [13], Zn 2þ [14], Nb 5þ [15], and W 6þ [16], also, rare earth cations, such as Ce 3þ [17,18], Gd 3þ [19], Nd 3þ [20], and Er 3þ [21] have been used to depress the formation of charge defects [16] or to modify dielectrics and thermophysical properties.…”

Section: Introductionmentioning

confidence: 99%

Electrical response in poled (Bi_0.5Na_0.5)_0.935Ba_0.065TiO₃ ceramics

et al. 2020

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A ferroelectric material (Bi 0.5 Na 0.5 ) 0.935 Ba 0.065 TiO 3 (BNBT) with a perovskite structure was poled and characterized by electrical impedance spectroscopy as a function of temperature, X-ray diffraction, and Rietveld refinement. The ac conductivity showed a low-frequency dispersion, supporting the idea of heterogeneous potential wells favored by Bi 3þ , Na þ , and Ba 2þ on the A site of the perovskite type of structure. The activation energies for ac conduction depende on the studied frequency. The permittivity and electrical modulus showed a distribution of the relaxation time associated with the delay in the orientation of the dipoles and an important contribution to the short-range conductivity.

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