An efficient way to improve the electrical stability of Ni0.6Si0.2Al0.6Mn1.6O4 NTC thermistor

Preparation and characterization of Cu and Zn modified nickel manganite NTC powders and thick film thermistors

“…Besides Ni and Mn present in the cubic nickel manganite spinel oxide, different elements such as Cu, Zn, Fe, Co, Mg, Si have been added in varied amounts and combinations while retaining the cubic spinel structure [1,3,8,14,15]. Addition of other metal elements influences the three basic thermistor parameters -25 , B-value and stability in different ways [17][18][19][20][21][22][23][24][25]. These parameters are also strongly influenced by the manufacturing conditions that include the powder preparation procedure and processing conditions such as the sintering temperature, rate of cooling and sintering duration.…”

“…These parameters are also strongly influenced by the manufacturing conditions that include the powder preparation procedure and processing conditions such as the sintering temperature, rate of cooling and sintering duration. Different methods have been applied to prepare starting NTC powder such as solid state methods [1,15,21,22,26], sol-gel method [19], solution combustion method [27] and co-precipitation method [8,14,20]. Solid state methods have included solid state coordination reactions of mixed oxalates [1,15,21] or ball milling/thermal treatment of mixed oxides [22,26,28,29].…”

Formation of Highly Textured Zn0.2Ni0.8Mn2O4Thin Films by RF Magnetron Sputtering

“…9 From (b), the B 298/358 (material constant B is a parameter describing the thermistor material physical properties and their thermal sensitivity index: the higher the B value is, the higher the sensitivity of the thermistor is) were calculated to be 775, 1264, 454 and 656 K for S1∼S4, respectively, based on the calculation method in Ref. 26. Although the B value of S2 film was higher compared to the other films, the thermal sensitivity values of all spinel films were relatively low, probably because the ratios of Zn, Ni, and Mn in these films were not optimized.…”

FABRICATION AND CHARACTERIZATION OF Ni–Mn–Si–Al–O NTC THERMISTOR AND ITS APPLICATION AS TEMPERATURE WIRE SENSOR

“…The details for measuring the electrical properties of the samples can be found elsewhere. 20 Fabrication of temperature wire sensors. The powder mixtures were heated at 1250 ○ C for 2 h in the ambient air furnace and cooled down in furnace naturally.…”