Microwave dielectric properties of Sr0.7Ce0.2TiO3–Sr(Mg1/3Nb2/3)O3 ceramics

Meng, Liufang; Yuan, Changlai; Wang, Zixing; Feng, Qin; Xu, Jiwen; Zhou, Changrong; Chen, Guohua

doi:10.1007/s10854-017-8193-7

Cited by 3 publications

(2 citation statements)

References 36 publications

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“…The ratios of ions can be estimated by the area ratio of the corresponding peaks, which can be obtained from the fitting results. 41,42 The area ratio of Fe 3+ and Fe 4+ is determined to be 2.5:2. The chemical formula is thus determined to be 0.80KNbO 3 -0.20SrFeO 2.83 .…”

Section: Resultsmentioning

confidence: 99%

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Crystal structures and electrical properties of Sr/Fe‐modified KNbO₃ ferroelectric semiconductors with narrow bandgap

et al. 2021

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In the process of exploring ferroelectric semiconductors, a new system of (1−x) KNbO3–xSrFeO3−δ (x = 0.00‐0.20) was successfully synthesized via solid‐state reaction. The crystal structures, ferroelectric, dielectric, optical, and electrical properties were systematically characterized. The orthorhombic phase with Amm2 space group is detected in all the ceramics. In addition, the orthorhombic and tetragonal phases coexist in 0.80KNbO3‐0.20SrFeO3‐δ ceramic. The decrease in oxygen octahedron distortion induces a weak ferroelectric polarization. The existence of long‐range ferroelectric polarization order in all the ceramics is verified and the bandgap of the ceramics can be tuned to ~2.18 eV. The improved short‐circuit photocurrent density (Jsc) and open‐circuit voltage (Voc) of the poled 0.95KNbO3‐0.05SrFeO3−δ ceramic at 30 kV/cm are ~6.90 nA/cm2 and 0.04 V, respectively. The activation energies for electrical conductivity of the grains and grain boundaries from 0.90KN–0.10SF ceramic are 0.67 and 0.77 eV, respectively, which indicate the doubly ionized oxygen vacancies. This work provides a new way to tune the optical bandgap/ferroelectric properties of KNbO3‐based ceramics for potential application in ferroelectric photovoltaic and energy fields.

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Section: Resultsmentioning

confidence: 99%

“…Therefore, the chemical formula for the 0.80KN–0.20SF ceramic can be written as 0.80KNbO 3 ‐0.20Sr[Fe 4+ , Fe 3+ ]O 3−δ . The ratios of ions can be estimated by the area ratio of the corresponding peaks, which can be obtained from the fitting results 41,42 . The area ratio of Fe 3+ and Fe 4+ is determined to be 2.5:2.…”

Section: Resultsmentioning

confidence: 99%

Crystal structures and electrical properties of Sr/Fe‐modified KNbO₃ ferroelectric semiconductors with narrow bandgap

et al. 2021

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Effect of PTFE, PET, and PFA on the microwave dielectric properties of H3BO3 ceramics

Ding

Liu

et al. 2022

Materials Chemistry and Physics

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Optical and electrical properties of ferroelectric Bi0.5Na0.5TiO3-NiTiO3 semiconductor ceramics

Chen

Yuan

Xiao

et al. 2020

Materials Science in Semiconductor Processing

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Microwave dielectric properties of Sr0.7Ce0.2TiO3–Sr(Mg1/3Nb2/3)O3 ceramics

Cited by 3 publications

References 36 publications

Crystal structures and electrical properties of Sr/Fe‐modified KNbO₃ ferroelectric semiconductors with narrow bandgap

Crystal structures and electrical properties of Sr/Fe‐modified KNbO₃ ferroelectric semiconductors with narrow bandgap

Effect of PTFE, PET, and PFA on the microwave dielectric properties of H3BO3 ceramics

Optical and electrical properties of ferroelectric Bi0.5Na0.5TiO3-NiTiO3 semiconductor ceramics

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Microwave dielectric properties of Sr0.7Ce0.2TiO3–Sr(Mg1/3Nb2/3)O3 ceramics

Cited by 3 publications

References 36 publications

Crystal structures and electrical properties of Sr/Fe‐modified KNbO3 ferroelectric semiconductors with narrow bandgap

Crystal structures and electrical properties of Sr/Fe‐modified KNbO3 ferroelectric semiconductors with narrow bandgap

Effect of PTFE, PET, and PFA on the microwave dielectric properties of H3BO3 ceramics

Optical and electrical properties of ferroelectric Bi0.5Na0.5TiO3-NiTiO3 semiconductor ceramics

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Product

Resources

About

Crystal structures and electrical properties of Sr/Fe‐modified KNbO₃ ferroelectric semiconductors with narrow bandgap

Crystal structures and electrical properties of Sr/Fe‐modified KNbO₃ ferroelectric semiconductors with narrow bandgap