Pioneering dielectric materials of Sn-doped Nb0.025Ti0.975O2 ceramics with excellent temperature and humidity stability for advanced ceramic capacitors

Mingmuang, Yasumin; Chanlek, Narong; Takesada, Masaki; Swatsitang, Ekaphan; Thongbai, Prasit

doi:10.1039/d3ra08336e

RSC Adv.

2024

DOI: 10.1039/d3ra08336e

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Pioneering dielectric materials of Sn-doped Nb_0.025Ti_0.975O₂ ceramics with excellent temperature and humidity stability for advanced ceramic capacitors

Yasumin Mingmuang,

Narong Chanlek,

Masaki Takesada

et al.

Abstract: The dielectric properties exhibit excellent stability across a wide range of temperatures. Additionally, the capacitance is almost exclusively dependent on humidity levels.

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Cited by 4 publications

References 42 publications

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Excellent temperature–humidity stability in (Tb1/2Ta1/2) Ti1-O2 ceramics with colossal permittivity and low–loss tangent

Thongyong,

Sreejivungsa,

Kawee

et al. 2024

Journal of Alloys and Compounds

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Excellent temperature–humidity stability in (Tb1/2Ta1/2) Ti1-O2 ceramics with colossal permittivity and low–loss tangent

Thongyong,

Sreejivungsa,

Kawee

et al. 2024

Journal of Alloys and Compounds

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Greatly enhanced humidity sensing performance with ultra-low hysteresis error in giant permittivity TiO2 ceramics co–doped with Sc3+ and Ta5+ ions

Phuion,

Tuichai,

Wongsricha

et al. 2025

Journal of Alloys and Compounds

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Enhanced humidity sensing properties of Ta2O5 and ITO doped rutile-TiO2 porous ceramics

Wongsricha,

Sreejivungsa,

Thanamoon

et al. 2024

Sci Rep

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In this study, we investigated the humidity sensing properties of TiO 2 -based ceramics doped with tantalum pentoxide (Ta 2 O 5 ) and indium tin oxide (ITO). Pure TiO 2 , 1%Ta-doped TiO 2 (1%TTO), 1%ITO-doped TiO 2 (1%ISTO), and 1%(Ta 2 O 5 + ITO) co-doped TiO 2 (1%ISTTO) ceramic samples were obtained by sintering at 1200 °C for 3 h. The rutile phase was observed in all samples. The lattice parameters of the single and co-doped samples were larger than those of pure TiO 2 , confirming the substitution of dopants. Porosity was observed in all ceramics. The mean grain sizes of all doped samples were significantly reduced compared to undoped TiO 2 . A homogeneous element dispersion was observed in the 1%TTO and 1%ISTTO ceramics, while segregation particles of related In-rich elements was observed in the 1%ISTO ceramic. Giant dielectric properties were not achieved in any samples due to the porosity. Nevertheless, excluding the undoped TiO 2 , the dielectric properties of all porous ceramics varied significantly with changes in humidity. The 1%ISTTO ceramic demonstrated superior humidity sensing properties, including a low maximum hysteresis error of 3.6% at 10 2 Hz. In contrast, the 1% TTO and 1% ISTO ceramics showed higher maximum hysteresis errors of 7.2% and 19.8%, respectively. Notably, the response and recovery times were 7.05 ± 0.18 and 2.48 ± 0.39 min, respectively, with good repeatability. This improvement is likely due to the synergistic effect of oxygen vacancies and defects on the surface, enhancing the humidity sensing properties of the 1% ISTTO ceramic, coupled with its optimal microstructure due to its lowest porosity and grain size.

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Pioneering dielectric materials of Sn-doped Nb_0.025Ti_0.975O₂ ceramics with excellent temperature and humidity stability for advanced ceramic capacitors

Abstract: The dielectric properties exhibit excellent stability across a wide range of temperatures. Additionally, the capacitance is almost exclusively dependent on humidity levels.

Cited by 4 publications

References 42 publications

Excellent temperature–humidity stability in (Tb1/2Ta1/2) Ti1-O2 ceramics with colossal permittivity and low–loss tangent

Excellent temperature–humidity stability in (Tb1/2Ta1/2) Ti1-O2 ceramics with colossal permittivity and low–loss tangent

Greatly enhanced humidity sensing performance with ultra-low hysteresis error in giant permittivity TiO2 ceramics co–doped with Sc3+ and Ta5+ ions

Enhanced humidity sensing properties of Ta2O5 and ITO doped rutile-TiO2 porous ceramics

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