Technological modification of spinel-based CuxNi1–x–yCo2yMn2–yO4 ceramics

Shpotyuk, O.; Kovalskiy, A.; Mrooz, O.; Shpotyuk, Lyubov; Pechnyo, V; Волков, С. В.

doi:10.1016/s0955-2219(01)00173-x

Cited by 24 publications

(6 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thermistor prepared using nano ceramics has already gained good rank in the family of advanced solid sensor technology. The name "thermistor" is derived from thermally sensitive resistance used to describe a form of resistive device that possesses a large temperature coefficient of resistance [1][2][3][4]. NTCR thermistor elements, which exhibit a decrease in electrical resistance with increasing temperature, are widely used in manufacturing temperature sensors with negative temperature coefficient.…”

Section: Introductionmentioning

confidence: 99%

CaTiO3 nano ceramic for NTCR thermistor based sensor application

2014

View full text Add to dashboard Cite

Abstract:It is possible to fabricate highly sensitive NTCR (negative temperature coefficient of resistance) thermistor using nano crystalline CaTiO 3 synthesized by high energy ball milling. Disc shaped green pellets were prepared and effects of sintering on the disc pellets were studied as thermistor by sintering the samples at 1000 ℃, 1100 ℃ and 1200 ℃. The as-prepared samples were characterized by X-ray diffraction (XRD), impedance analysis and electrical measurement. The resistivity of the prepared samples varies predictably with temperature: this makes them promising material for temperature sensor. The experimental results prove that nano crystalline CaTiO 3 ceramic is one kind of thermistor with exponential negative temperature coefficient of resistance in the temperature range of 300-500 ℃. The samples have the advantages of rapid response, high sensitivity and capability to withstand thermal surges over the temperature range of 300-500 ℃. Resistance-temperature characteristics are described by thermistor equation with thermistor constant around 4003 K to 10795 K and thermal coefficient of resistance α around 1%/℃ to 13%/℃. The activation energy is in the range of 0.34-0.93 eV. The observed thermistor parameters are found to be comparable with many of the known thermistor materials. This suggests that the electrical properties can be adjusted to desirable values by controlling the temperature parameter. The influence of fabrication process of disc thermistor and electrical properties are discussed. The study shows the potential of nano crystalline CaTiO 3 to act as an NTCR material for thermistor applications.

show abstract

Section: Introductionmentioning

confidence: 99%

CaTiO3 nano ceramic for NTCR thermistor based sensor application

2014

View full text Add to dashboard Cite

show abstract

“…Various NMO bulk ceramics and thin/thick films with a wide range of dopants can be used in order to tune the device performance to the specific requirements [1,2,[6][7][8]. In general, the composition and processing of the NTC affect the distribution of cations in the spinel structure and, thus, significantly change the electrical properties.…”

Section: Introductionmentioning

confidence: 99%

LaNiO3 conducting particle dispersed NiMn2O4 nanocomposite NTC thermistor thick films by aerosol deposition

Kang

Ryu

Han

et al. 2012

Journal of Alloys and Compounds

View full text Add to dashboard Cite

“…[4][5][6][7][8][9][10] Several dopants can be included to improve the sensor performance. [11][12][13] Despite the apparent spinel structure and simple chemical formula this material is surprisingly complex and keeps nowadays being revisited and prepared by different routes and in different forms: powder, thin and thick films, and single crystals. [14][15][16][17][18][19][20][21] The complexity of this compound is partially owned to the variability of the Ni and Mn lattice positions.…”

Section: Introductionmentioning

confidence: 99%