Studies on effect of Ca-doping on structure and electrochemical properties of garnet-type Y3-xCaxFe5O12-δ

Zhang, Zheyu; Singh, Kalpana; Tsur, Yoed; Zhou, Jigang; Dynes, James J.; Thangadurai, Venkataraman

doi:10.1016/j.jssc.2020.121530

Cited by 2 publications

(2 citation statements)

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“…The generated charges shift across the samples under the applied electric field. The decrease in the resistivity value was also observed in other doped spinel and YIG samples [20,21]. The small change in the resistivity value at higher doping concentrations x above 0.06 may be due to the uneven distribution of Zn 2+ in the lattice cells.…”

Section: Characteristicsupporting

confidence: 54%

Magnetic, DC Electrical, and Impedance Properties of Zn Doped Yttrium Iron Garnet Nanoparticles

Nguyet

Duong

Anh

2023

MaP

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Y3Fe5-xZnxO12 with x = 0; 0.02; 0.04; 0.06; 0.08; 0.1 (YIG) particle materials were fabricated by sol-gel method combined with heat treatment at 900 °C and 1,000 °C with different annealing times (2 h and 5 h) and heating rates (5 °C/min and 2 °C/min). X-ray diffraction patterns show that the obtained samples are single crystalline phases at the condition of an annealing temperature of 900 °C for 5 h and a heating rate of 2 degrees/min. FESEM images of the samples show particle sizes from the submicron to the micrometer. The magnetization of the samples decreases as the doping concentration increases. I-V characteristics and complex impedance spectra at room temperature of samples were measured. The results show that the resistivity value of the doped samples decreases in the range of 5-6 orders in magnitude compared with that of the pure YIG sample. The contribution of the grain boundaries to the impedance was analyzed. The conducting process is explained due to the tunneling of charge carriers across the grain boundary.

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Section: Characteristicsupporting

confidence: 54%

Magnetic, DC Electrical, and Impedance Properties of Zn Doped Yttrium Iron Garnet Nanoparticles

Nguyet

Duong

Anh

2023

MaP

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“…p O 2 dependent ASR and impedance spectroscopy genetic programming (ISGP) analysis showed that oxygen dissociation and partial reduction of adsorbed oxygen molecule are the rate limiting steps for the ORR. 276…”

Section: Other Crystal Structures For It-sofc Cathodesmentioning

confidence: 99%

Recent advances, practical challenges, and perspectives of intermediate temperature solid oxide fuel cell cathodes

et al. 2022

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Studies on effect of Ca-doping on structure and electrochemical properties of garnet-type Y3-xCaxFe5O12-δ

Cited by 2 publications

References 99 publications

Magnetic, DC Electrical, and Impedance Properties of Zn Doped Yttrium Iron Garnet Nanoparticles

Magnetic, DC Electrical, and Impedance Properties of Zn Doped Yttrium Iron Garnet Nanoparticles

Recent advances, practical challenges, and perspectives of intermediate temperature solid oxide fuel cell cathodes

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