Photoluminescence and impedance properties of rare-earth doped (K0.5Na0.5)NbO3 lead-free ceramics

Shi, Wenming; Feng, Yao; Lu, Tongyou; Lu, Ying; Shen, Juan; Xue, Jianru; Du, Juan; Fu, Peng; Hao, Jigong; Li, Wei

doi:10.1007/s10854-018-0328-y

Cited by 10 publications

(3 citation statements)

References 41 publications

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“…All ceramics show linear relationship and the fitting values are around 1.7, which indicates the generation of the relaxor behavior [40]. The dielectric relaxation in the studied KNSN-0.04BNKZ-xSm system was mainly affected by the thermal motion of oxygen ions/vacancies as discussed in Fig.…”

Section: Resultsmentioning

confidence: 67%

Electrical properties and luminescence properties of 0.96(K0.48Na0.52)(Nb0.95Sb0.05)–0.04Bi0.5(Na0.82K0.18)0.5ZrO3-xSm lead-free ceramics

Hao

et al. 2020

J Adv Ceram

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In this paper, Sm-doped 0.96(K 0.48 Na 0.52)(Nb 0.95 Sb 0.05)-0.04Bi 0.5 (Na 0.82 K 0.18) 0.5 ZrO 3 (abbreviated as KNSN-0.04BNKZ) lead-free piezoelectric ceramics were prepared by conventional solid-state sintering method and the effects of Sm 2 O 3 on the phase structure, microstructure, electrical and luminescent properties of KNSN-0.04BNKZ potteries were studied. Results revealed that a single solid solution phase with pseudo-cubic perovskite structure was formed between KNSN-0.04BNKZ and Sm 2 O 3. Existence of weak dielectric/ferroelectric properties with a diffuse dielectric anomaly and slim P-E hysteresis loops of the Sm-doped KNSN-0.04BNKZ demonstrated the ferroelectric relaxor behavior of the KNNS-0.04BNKZ-xSm ceramics. Accordingly, the temperature stability and fatigue behavior of the modified ceramics were significantly improved. It was found that the KNSN-0.04BNKZ ceramics with 0.002 mol Sm addition exhibited nearly temperature independent properties and fatigue-free behavior. Moreover, Sm-modified KNSN-0.04BNKZ exhibits a bright photoluminescence with a strong orange emission under visible light irradiation. As a material with both electrical and luminescent properties, it has good application prospect in future optoelectronic components by integrating its luminescent and electrical properties.

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Section: Resultsmentioning

confidence: 67%

Electrical properties and luminescence properties of 0.96(K0.48Na0.52)(Nb0.95Sb0.05)–0.04Bi0.5(Na0.82K0.18)0.5ZrO3-xSm lead-free ceramics

Hao

et al. 2020

J Adv Ceram

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“…To compare with the high-temperature cubic phase, the unit cell parameters of the monoclinic phase are often used, written as 𝑎p = 𝑎, 𝑏p = 𝑐p = √ 𝑏 2 + 𝑐 2 /2. [19] For the RC and SC samples, 𝑐p/𝑎p are 1.0137 and 1.0155, respectively, indicating a higher degree of anisotropy for the SC sample.…”

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confidence: 97%

“…[4] The oxygen vacancies caused by doped rare earth elements Pr/Sm dominated the conductivity of KNN ceramics, leading to photoluminescence. [19] Min et al further showed that heat treatment could modulate the content of oxygen vacancies, thereby regulating the dielectric and mechanical relaxation behavior of BiFeO3 ceramics. [20] In general, fewer studies focused on heterovalent doping of KNN, and effect of doping on the electrical properties needs to be deeply revealed.…”

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confidence: 99%

Robust and Tunable Ferroelectricity in Ba/Co Codoped (K_0.5Na_0.5)NbO₃ Ceramics

Liu 刘,

Zha 查,

Yang 杨

et al. 2024

Chinese Phys. Lett.

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The 0.98(K0.5Na0.5)NbO3-0.02Ba(Nb0.5Co0.5)O3-δ ceramics with doped Ba2+ and Co2+ ions are fabricated, and the impacts of the thermal process are studied. Compared with the rapidly cooled (RC) sample, the slowly cooled (SC) sample possesses superior dielectric and ferroelectric properties, and an 11 K higher ferroelectric-paraelectric phase transition temperature, which can be attributed to the structural characteristics such as the grain size and the degree of anisotropy. Heat treatment can reversibly modulate the content of the oxygen vacancies, and in turn the ferroelectric hysteresis loops of the samples. Finally, robust and tunable ferroelectric property is achieved in SC samples with good structural integrity.

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Photodielectric and Luminescence Properties of (K0.5Na0.5)NbO3-Based Ceramics Modified by (Sr0.5Sm0.5)(Mg0.5Nb0.5)O3

Luo,

Yang,

et al. 2023

J. Electron. Mater.

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Photoluminescence and impedance properties of rare-earth doped (K0.5Na0.5)NbO3 lead-free ceramics

Cited by 10 publications

References 41 publications

Electrical properties and luminescence properties of 0.96(K0.48Na0.52)(Nb0.95Sb0.05)–0.04Bi0.5(Na0.82K0.18)0.5ZrO3-xSm lead-free ceramics

Electrical properties and luminescence properties of 0.96(K0.48Na0.52)(Nb0.95Sb0.05)–0.04Bi0.5(Na0.82K0.18)0.5ZrO3-xSm lead-free ceramics

Robust and Tunable Ferroelectricity in Ba/Co Codoped (K_0.5Na_0.5)NbO₃ Ceramics

Photodielectric and Luminescence Properties of (K0.5Na0.5)NbO3-Based Ceramics Modified by (Sr0.5Sm0.5)(Mg0.5Nb0.5)O3

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Photoluminescence and impedance properties of rare-earth doped (K0.5Na0.5)NbO3 lead-free ceramics

Cited by 10 publications

References 41 publications

Electrical properties and luminescence properties of 0.96(K0.48Na0.52)(Nb0.95Sb0.05)–0.04Bi0.5(Na0.82K0.18)0.5ZrO3-xSm lead-free ceramics

Electrical properties and luminescence properties of 0.96(K0.48Na0.52)(Nb0.95Sb0.05)–0.04Bi0.5(Na0.82K0.18)0.5ZrO3-xSm lead-free ceramics

Robust and Tunable Ferroelectricity in Ba/Co Codoped (K0.5Na0.5)NbO3 Ceramics

Photodielectric and Luminescence Properties of (K0.5Na0.5)NbO3-Based Ceramics Modified by (Sr0.5Sm0.5)(Mg0.5Nb0.5)O3

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Robust and Tunable Ferroelectricity in Ba/Co Codoped (K_0.5Na_0.5)NbO₃ Ceramics