The effects of pH value on the characterization of CoMnNiO NTC thermistor nanopowders

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

“…Ascribing to the smart property that the resistance decreases with increasing temperature, negative temperature coefficient thermistor (NTC) is considered as one of the high performance ceramic materials and has been used in fabricating temperature sensors [1,2]. Electrical properties of the NTC thermistors after a long-term exposure at elevated temperatures, i.e.…”

Electrical properties of Ba0⋅7Bi0⋅3Fe0⋅9Sn0⋅1O3–BaCo 0 ⋅ 02 II $^{\mathrm{II}}_{0\cdot 02}$ Co 0 ⋅ 04 III $^{\mathrm{III}}_{0\cdot 04}$ Bi0⋅94O3 thick film thermistors with wide-range adjustable parameters

“…In the thick film technology, it is well known that three essential components in thick film thermistor pastes are a functional phase, a glass frit and an organic viscous fluid also known as the organic vehicle (Jagtap et al 2008). The functional phases are generally composed of semiconductor metal oxides with general spinel-type formula AB 2 O 4 (Park and Bang 2003;Schmidt et al 2004;Zhuang et al 2004;Song et al 2005;Varghese et al 2008). In order to decrease the room-temperature resistivity of thermistor films, it is general to add a conductive phase into the functional phase.…”

Ruthenium dioxide doped manganite‐based NTC thermistors for low‐resistance applications

“…Normally, NTC materials are prepared by reaction of several transition metal oxides, viz Mn, Co, Ni (Abe et al , 2003; Martin de Vidales et al , 1998; Kanade and Puri, 2006; Zhuang et al , 2004; Wang et al , 2007; Hosseini, 2000; Gao et al , 2007) with some conducting phase like silver (Vittal et al , 1990), cuprous/cupric oxide (Brunets et al , 2004; Shpotyuk et al , 2001; Jagtap et al , 2007b), ferric ferrous oxide (Park and Bang, 2003; Wang et al , 2006; Torrii et al , 1996; Feltz and Polzl, 2000), etc. the selection of these conducting materials is mainly dependent upon the requirement of resistivity, thermistor constant, activation energy.…”