Hopping conduction in (Ni,Co,Mn)O4 prepared by different synthetic routes: Conventional and spark plasma sintering

Han, HyukSu; Lee, Han-Chan; Lim, Jiun; Kim, Kang Min; Hong, Yu‐Rim; Lee, Jae-Seok; Forrester, Jennifer S.; Ryu, Jeong Ho; Mhin, Sungwook

doi:10.1016/j.ceramint.2017.08.105

Cited by 9 publications

(2 citation statements)

References 17 publications

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“…Note that activation energy reflects the energy for hopping of the charge carrier for the NMC [ 25 , 26 ]. The activation energies of the NMCs prepared via the one-step and two-step SSR in this study show similar values to that of the Ni-Co-Mn-based NTC thermistor [ 27 ]. In the view of industrial application, different semiconductive properties of the NTC-based temperature sensor are required for the specific application, considering product design as well as compatibility of the other electronic components.…”

Section: Resultsmentioning

confidence: 60%

Effect of One Step Solid State Reaction Route on the Semiconductor Behavior of the Spinel (NI, Co, and Mn)O4 to Be Used as Temperature Sensor

Mhin

2023

Sensors

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Achieving carbon neutrality is important to solve environmental problems and thus requires decarbonizing manufacturing processes to reduce greenhouse gas emissions. The firing of ceramics, including calcination and sintering, is a typical fossil fuels-driven manufacturing process that requires large power consumption. Although the firing process in manufacturing ceramics cannot be eliminated, an effective firing strategy to reduce processing steps can be a choice to lower power consumption. Herein, we suggest a one-step solid solution reaction (SSR) route to manufacture (Ni, Co, and Mn)O4 (NMC) electroceramics for their application in temperature sensors with negative temperature coefficient (NTC). Additionally, the effect of the one-step SSR route on the electrical properties of the NMC is investigated. Similar to the NMC prepared using the two-step SSR route, spinel structures with dense microstructure are observed in the NMC prepared via the one-step SSR route. Based on the experimental results, the one-step SSR route can be considered as one of the effective processing techniques with less power consumption to manufacture electroceramics.

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Section: Resultsmentioning

confidence: 60%

Effect of One Step Solid State Reaction Route on the Semiconductor Behavior of the Spinel (NI, Co, and Mn)O4 to Be Used as Temperature Sensor

Mhin

2023

Sensors

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“…X-ray photoelectron spectroscopy (XPS) can identify the structure, elements, and chemical states of the sample surface, which can be quantitatively or qualitatively analyzed [16,17]. The conductive properties of the Mn-Co-Ni-O system spinel structure material are mainly affected by the concentration of Mn 3+ and Mn 4+ cations occupying the B site as following equation: Table 2.…”

Section: X-ray Photoelectron Spectroscopymentioning

confidence: 99%

Mn-Co-Ni-O thin films prepared by sputtering with alloy target

Zou

et al. 2020

J Adv Ceram

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The thin film of heat-sensitive materials has been widely concerned with the current trend of miniaturization and integration of sensors. In this work, Mn 1.56 Co 0.96 Ni 0.48 O 4 (MCNO) thin films were prepared on SiO 2 /Si substrates by sputtering with Mn-Co-Ni alloy target and then annealing in air at different temperatures (650-900 ℃). The X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM) analysis indicated that the main crystalline phase of MCNO thin films was spinel crystal structure; the surface of the thin films was very dense and uniform. The electrical properties of the thin films were studied in the temperature range of-5-50 ℃. The MCNO thin film with a low room temperature resistance R 25 of 71.1 kΩ and a high thermosensitive constant B value of 3305 K was obtained at 750 ℃. X-ray photoelectron spectroscopy (XPS) analysis showed that the concentration of Mn 3+ and Mn 4+ cations in MCNO thin films is the highest when annealing temperature is 750 ℃. The complex impedance analysis revealed internal conduction mechanism of the MCNO thin film and the resistance of the thin film was dominated by grain boundary resistance.

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Influence of B3+- and Na+-ions on electrical property and temperature sensitivity of NiO-based ceramics

Yang

Zhang

et al. 2019

J Mater Sci: Mater Electron

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Hopping conduction in (Ni,Co,Mn)O4 prepared by different synthetic routes: Conventional and spark plasma sintering

Cited by 9 publications

References 17 publications

Effect of One Step Solid State Reaction Route on the Semiconductor Behavior of the Spinel (NI, Co, and Mn)O4 to Be Used as Temperature Sensor

Effect of One Step Solid State Reaction Route on the Semiconductor Behavior of the Spinel (NI, Co, and Mn)O4 to Be Used as Temperature Sensor

Mn-Co-Ni-O thin films prepared by sputtering with alloy target

Influence of B3+- and Na+-ions on electrical property and temperature sensitivity of NiO-based ceramics

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