Dielectric properties of B–site charge balanced Dy–doped SrTiO3 ceramics for energy storage

Shen, Zong–Yang; Li, Yueming; Qiguo, Hu; Luo, Wen–Qin; Wang, Zhumei

doi:10.1007/s10832-014-9980-7

Cited by 24 publications

(8 citation statements)

References 22 publications

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“…With the rapid development of microelectronics technology, a dielectric material with colossal permittivity (CP, ε r ≥10 3 ) has been given lots of attention . Recently, a large number of new CP materials (ε r >10 3 , f =10 3 Hz and room temperature) have been discovered , such as BaTiO 3 , CaCu 3 Ti 4 O 12 (CCTO) , NiO , SrTiO 3 , (Pb,La)TiO 3 as well as the related compounds. Unfortunately, higher tan δ values of these materials still limited their practical applications.…”

Section: Introductionmentioning

confidence: 99%

Niobium and divalent‐modified titanium dioxide ceramics: Colossal permittivity and composition design

Luo

et al. 2017

J Am Ceram Soc

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Section: Introductionmentioning

confidence: 99%

Niobium and divalent‐modified titanium dioxide ceramics: Colossal permittivity and composition design

Luo

et al. 2017

J Am Ceram Soc

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“…The permittivity is reduced because the rattling of Ti 4+ cations is restrained, and an excellent microwave dielectric property is achieved. In addition, Dy 3+ doped SrTiO 3 were prepared by Shen et al 336 Only cubic perovskite structure was detected for all Dy 3+ :SrTiO 3 ceramics. Both high breakdown strength (E b > 150 kV/cm) and permittivity (ε r = 3300 at 1 kHz) were obtained in the Sr 0.98 Dy 0.02 Ti 0.995 O 3 .…”

Section: Strontium Titanatementioning

confidence: 99%

Defects and Aliovalent Doping Engineering in Electroceramics

et al. 2020

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Since the positive influences of defects on the performance of electroceramics were discovered, investigations concerning on defects and aliovalent doping routes have grown rapidly in the fields of inorganic chemistry and condensed matter physics. In this article, we summarized the types of defects in electroceramics as well as characterization tools of defects and highlighted the effects of intrinsic and extrinsic defects on the material performances with the emphasis on dielectric, ferroelectric, and piezoelectric properties. We mainly introduced defect related theoretical simulation and experimental results in several typical incipient ferroelectrics, ferroelectrics, and antiferroelectrics. Hence, the influences of defects on the crystal lattice were summed up, and then the main physical mechanisms were highlighted. Particularly, the performance enhancements of aliovalently doped electroceramics were also evaluated and reviewed. Finally, the outlook and challenges were discussed on the basis of their current developments. This article covers not only an overview of the state-of-the-art advances of defects and aliovalent doping routes in electroceramics but also the future prospects that may open another window to tune the electrical performance of electroceramics via intentionally introducing certain defects.

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“…--------------------0 The material dispersion M(λ) could be expressed in terms of the refractive index, n, as: (10) Differentiating Eq. (8) w.r.t λ yields the material's dispersion as a function of Ē0 and Ēd as follows [26] : (11) Figure 8 shows the graphical relation of the calculated M(λ) versus wavelength. The wavelength at which M = 0, and the obtained results are given in Table 2 as a function of films composition.…”

Section: Linear Optical Dispersionmentioning

confidence: 99%

“…It should be noted that the low phonon energy of a-Se decreases the multi phonon relaxation which enables an active transition between rare-earth atom levels in the middle IR spectral region. Consequently, the exploration of the optical properties of doped a-Se with Dy ions is very important to improve the performance of Laser emission [11] .…”

Section: Introductionmentioning

confidence: 99%

The role of dysprosium ions as a dopant on linear and nonlinear optical dispersion parameters in a-Se thin film

Abdel-Wahab

Maksoud

2021

ACE

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Thin films of un-doped and doped a-Se with Dysprosium rare-earth ions have been prepared by the thermal evaporation technique. The optical transmission spectra of the investigated films have been measured in a wide spectral range and used to calculate the linear optical constants together with the optical energy gap of studied films. The observed decrease in the values of the energy gap against the increase of the Dysprosium (Dy) content in a-Se films has been explained using Mott and Davis Model and in terms of electronegativity difference of the constituent atoms. Furthermore, the dispersion of nonlinear parameters such as second-order refractive index and nonlinear absorption coefficient (two-photon absorption coefficient) of investigated films are presented and discussed.

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Dielectric properties of B–site charge balanced Dy–doped SrTiO3 ceramics for energy storage

Cited by 24 publications

References 22 publications

Niobium and divalent‐modified titanium dioxide ceramics: Colossal permittivity and composition design

Niobium and divalent‐modified titanium dioxide ceramics: Colossal permittivity and composition design

Defects and Aliovalent Doping Engineering in Electroceramics

The role of dysprosium ions as a dopant on linear and nonlinear optical dispersion parameters in a-Se thin film

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