Exaggerated grain growth caused by ZrO2-doping and its effect on the optical properties of Tb3Al5O12 ceramics

Chen, Jie; Lin, Hui; Hao, Deming; Tang, Yanru; Yi, Xuezhuan; Zhao, Yuanan; Zhou, Shengming

doi:10.1016/j.scriptamat.2018.10.040

Cited by 22 publications

(14 citation statements)

References 23 publications

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“…The similar phenomena of the absorption band and the red color were also observed in Zr:TAG ceramics reported in Ref. 44 in which a strong correlation between color centers was revealed. It is clear that portion of Tb 3+ were substituted by Zr 4+ during the vacuum sintering, along with the generation of oxygen vacancies and free electrons.…”

Section: Resultssupporting

confidence: 86%

Fabrication and characterizations of Tb₃Al₅O₁₂‐based magneto‐optical ceramics

Zhang

et al. 2022

Int J Applied Ceramic Tech

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Transparent terbium aluminum garnet (TAG)‐based ceramics were fabricated by vacuum pre‐sintering and hot isostatic pressing (HIP) posttreatment from the co‐precipitated TAG powders with different stoichiometric ratios. After component optimization, the transparent ceramics with TAG single‐phase and attractive optical quality were obtained. The in‐line transmittance of optimal Tb(1+x)3(Al0.996255Si0.003745)5O12.0093625+3x/2 (x = −.004, −.002) ceramics (1.7‐mm thick) pre‐sintered at 1700°C for 20 h with HIP posttreatment at 1700°C for 3 h under 176‐MPa Ar reaches 82.6% at the wavelength of 1064 nm. With increasing terbium components, the secondary phase TAP appears in ceramics, which significantly degrades the optical quality of TAG‐based ceramics. The Verdet constant of the TAG‐based ceramics at 632.8 nm is about −181 rad T−1 m−1 at room temperature, which is about 33% higher than that of the TGG single crystals (−134 rad T−1 m−1).

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Section: Resultssupporting

confidence: 86%

Fabrication and characterizations of Tb₃Al₅O₁₂‐based magneto‐optical ceramics

Zhang

et al. 2022

Int J Applied Ceramic Tech

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“…small number of pores in these three ceramics, indicating a dense microstructure was formed after the hot-pressing process. Moreover, the grain size increases on the whole with increasing La doping contents, which may be because the substitution of La is beneficial in promoting the grain growth [18,19]. It can be discovered that the peak position of Sr1-xLaxTiO3 slightly shifted toward a lower 2θ value and then tended to have a higher 2θ value with increasing x value.…”

Section: Methodsmentioning

confidence: 97%

Thin and temperature-resistant TiO2–Sr1−xLaxTiO3 (x = 0.1–0.3) composite ceramics for microwave absorption in the X-band

Zhou

Wen

Yang

et al. 2021

J Mater Sci: Mater Electron

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Recently, high-temperature stability is a challenge in a number of microwave absorption materials. Hence, researchers are still searching for a novel material system preferably with a high-temperature resistance to be applied in the field of microwave absorption. Here, in the current study, toward this aim, lanthanum (La) doped strontium titanate (SrTiO3) blended with TiO2 were fabricated by hot-press sintering in vacuum. The as-prepared samples are denoted as TiO2-Sr1-xLaxTiO3 with x varying from 0.1 to 0.3 in steps of 0.1. Scanning electron microscope (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscope (XPS), and microwave vector network analyzer were carried on to study their morphology, phase composition, structure, electromagnetic and microwave absorption properties, respectively. It is revealed that the La atom was efficiently doped at the Sr-site in SrTiO3. Benefiting from the tunability of its dielectric and impedance properties, TiO2-Sr1-xLaxTiO3 can be utilized in a highly efficient way to absorb microwave radiations with a decent design. Results illustrated that TiO2-Sr1-xLaxTiO3 (x=0.2) with a thickness of only 0.42 mm exhibits a high microwave absorption efficiency of -40.89 dB and can achieve a 2.82 GHz bandwidth of reflection loss value below -5 dB. Thus, TiO2-Sr1-xLaxTiO3 composites ceramics can be served as an opening opportunity for the application of high-temperature stability and tunable high-performance effectiveness microwave absorption materials in stealth technology and information security.

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“…formed after the hot-pressing process. Moreover, the grain size increases on the whole with increasing La doping contents, which may be because the substitution of La is beneficial in promoting the grain growth [18,19]. Incorporating a certain concentration of La, the lattice parameters of SrTiO3 can be affected by two mechanisms.…”

Section: Methodsmentioning

confidence: 99%

Thin and temperature resistant TiO2-Sr1-xLaxTiO3 (x=0.1~0.3) composite ceramics for microwave absorption in the X-band

Zhou

Wen

Yang

et al. 2021

Preprint

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Recently, high-temperature stability is a challenge in a number of microwave absorption materials. Hence, researchers are still searching for a novel material system preferably with a high-temperature resistance to be applied in the field of microwave absorption. Here, in the current study, toward this aim, lanthanum (La) doped strontium titanate (SrTiO 3 ) blended with TiO 2 were fabricated by hot-press sintering in vacuum. The as-prepared samples are denoted as TiO 2 -Sr 1- x La x TiO 3 with x varying from 0.1 to 0.3 in steps of 0.1. Scanning electron microscope (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscope (XPS), and microwave vector network analyzer were carried on to study their morphology, phase composition, structure, electromagnetic and microwave absorption properties, respectively. It is revealed that the La atom was efficiently doped at the Sr-site in SrTiO 3 . Benefiting from the tunability of its dielectric and impedance properties, TiO 2 -Sr 1- x La x TiO 3 can be utilized in a highly efficient way to absorb microwave radiations with a decent design. Results illustrated that TiO 2 -Sr 1- x La x TiO 3 ( x =0.2) with a thickness of only 0.42 mm exhibits a high microwave absorption efficiency of -40.89 dB and can achieve a 2.82 GHz bandwidth of reflection loss value below -5 dB. Thus, TiO 2 -Sr 1- x La x TiO 3 composites ceramics can be served as an opening opportunity for the application of high-temperature stability and tunable high-performance effectiveness microwave absorption materials in stealth technology and information security.

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Exaggerated grain growth caused by ZrO2-doping and its effect on the optical properties of Tb3Al5O12 ceramics

Cited by 22 publications

References 23 publications

Fabrication and characterizations of Tb₃Al₅O₁₂‐based magneto‐optical ceramics

Fabrication and characterizations of Tb₃Al₅O₁₂‐based magneto‐optical ceramics

Thin and temperature-resistant TiO2–Sr1−xLaxTiO3 (x = 0.1–0.3) composite ceramics for microwave absorption in the X-band

Thin and temperature resistant TiO2-Sr1-xLaxTiO3 (x=0.1~0.3) composite ceramics for microwave absorption in the X-band

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Exaggerated grain growth caused by ZrO2-doping and its effect on the optical properties of Tb3Al5O12 ceramics

Cited by 22 publications

References 23 publications

Fabrication and characterizations of Tb3Al5O12‐based magneto‐optical ceramics

Fabrication and characterizations of Tb3Al5O12‐based magneto‐optical ceramics

Thin and temperature-resistant TiO2–Sr1−xLaxTiO3 (x = 0.1–0.3) composite ceramics for microwave absorption in the X-band

Thin and temperature resistant TiO2-Sr1-xLaxTiO3 (x=0.1~0.3) composite ceramics for microwave absorption in the X-band

Contact Info

Product

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About

Fabrication and characterizations of Tb₃Al₅O₁₂‐based magneto‐optical ceramics

Fabrication and characterizations of Tb₃Al₅O₁₂‐based magneto‐optical ceramics