Mn–Ni–Co–Cu–Zn–O NTC thermistors with high thermal stability for low resistance applications

A relatively wide range of values of electrical resistivity, B25/85 constant, and activation energy for Mn1.95−xNi0.45Co0.15Cu0.45ZnxO4 (0 ⩽ x ⩽ 0.3) negative temperature coefficient (NTC) thermistors was obtained by adding ZnO. This means that the electrical properties were adjusted to the desired values, depending on their composition. The incorporation of ZnO up to x = 0.12 led to an increase in both the resistivity and the B25/85 constant. We successfully fabricated the Zn-added Mn1.95−xNi0.45Co0.15Cu0.45ZnxO4 NTC thermistors with high thermal stability for low resistance applications.