The dielectric properties of alternately doped Ba1-xSrxTiO3 films with different Ba/Sr ratios

Wang, Hongzhe; Dong, Yaoxuan; Zhu, Ruijian; Wang, Zengmei; Guo, Xinli; Zhang, Tong; Yuan, Guoliang; Kimura, Hideo

doi:10.1016/j.ceramint.2019.01.136

Cited by 6 publications

(3 citation statements)

References 26 publications

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“…The BCY 1 T sample consistently exhibits higher electrical conductivities than the other samples. The Y 3+ dissolution kinetics might also be reflected in the slope of rising conductivity [ 56 ]. Furthermore, conductivities arise from a combined mechanism of cation and electron vacancy compensation, wherein the electron compensation occurs gradually.…”

Section: Resultsmentioning

confidence: 99%

“…The existence of flaws, vacancies, imperfections, and variations in lattice characteristics has an impact on it. From SEM analysis it was reported that the BCT specimen exhibits reduced grain size and possesses a microstructure characterized by porosity [ 56 ]. The overall conductivity in the sintered ceramic of BCY 1.5 T is influenced by the occupancy of the Y 3+ site; Y 3+ turns into an acceptor-cation and self-compensates.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Modification of structural, morphological, and dielectric properties of barium calcium titanate ceramics with yttrium addition

Sumona,

Al Mahmood,

Islam

et al. 2024

Heliyon

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Modification of structural, morphological, and dielectric properties of barium calcium titanate ceramics with yttrium addition

Sumona,

Al Mahmood,

Islam

et al. 2024

Heliyon

View full text Add to dashboard Cite

“…畴的存在, 畴壁处的介电损耗较大导致的 [32,33] . 而在顺电相, 当温度远离T M 时, C 0 下降, 而Q值则升高, 与大量相关研究中报道的可调率和Q值的反向制约关系一致, 暗示了某些本征的耦合机制 [30,31] .…”

Section: Bst组合薄膜生长unclassified

Composition-spread epitaxial ferroelectric thin films for temperature-insensitive functional devices

Pei-Yu¹,

Zhuang²,

Lin³

et al. 2023

Acta Phys. Sin.

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BaxSr1-xTiO3(BST) ferroelectric thin films are widely used in microwave tunable devices due to their high dielectric constant, strong electric field tunability and low microwave loss. However, because of the temperature dependence of dielectric constant in ferroelectric materials, the high-tunability for conventional single component ferroelectric thin films can only be achieved in the vicinity of Curie Temperature (TC) which results in that the ferroelectric thin films are difficult to apply to wide temperature range. To obtain ferroelectric thin films available for temperature stable functional devices, single composition Ba0.2Sr0.8TiO3 thin films, Ba0.5Sr0.5TiO3 thin films and heterostructure ofBa0.2Sr0.8TiO3/Ba0.5Sr0.5TiO3 thin films are deposited by pulsed laser deposition (PLD). By comparing with their dielectric properties in a wide temperature range, it’s found that the temperature sensitivity of BST films can be effectively reduced by introducing a composition gradient along the epitaxial direction. However, the heterostructure engineering may bring extra troubles caused by interfaces, which may limit the quality factor Q. In this paper, we extend our combinatorial film deposition technique to ferroelectric materials, and successfully fabricated in-plane composition-spread Ba1-xSrxTiO3 thin films, which are expected to broaden the phase transition temperature range of BST films while avoiding the problem of interface control.

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Effects of process parameters on nonhydrolytic sol-gel synthesis of Ba0.6Sr0.4TiO3 powders

Yin

Jiang

Feng

et al. 2022

Ceramics International

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The dielectric properties of alternately doped Ba1-xSrxTiO3 films with different Ba/Sr ratios

Cited by 6 publications

References 26 publications

Modification of structural, morphological, and dielectric properties of barium calcium titanate ceramics with yttrium addition

Modification of structural, morphological, and dielectric properties of barium calcium titanate ceramics with yttrium addition

Composition-spread epitaxial ferroelectric thin films for temperature-insensitive functional devices

Effects of process parameters on nonhydrolytic sol-gel synthesis of Ba0.6Sr0.4TiO3 powders

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