Influence of Nd Substitution by La in Nd_0.7Sr_0.3MnO₃ on Structural and Transport Properties for Sensing Applications

Table 1

Various models found in the literature to explain the conduction mechanism in low-temperature regime (below 𝑇_MI) of manganites.

Author	Equation	Material	Ref
Schiffer et al. and Vlakhov et al.	𝜌=𝜌0+𝜌2.55𝑇^2.5	La0.7Ca0.3MnO3 polycrystalline pellets and film	[14, 15]
Urushibara et al.	𝜌=𝜌0+𝜌2𝑇^2	LSMO	[16]
Kubo and Ohata	𝜌=𝜌0+𝜌4.5𝑇^4.5	Doped LaMnO3	[17]
Snyder et al.	𝜌=𝜌0+𝜌2𝑇^2+𝜌4.5𝑇^4.5	La0.67A0.33MnO3, A = Ca/Sr thin film/bulk	[18]
Jaime et al.	𝜌=𝜌0+𝜌2𝑇^2+𝜌5𝑇^5	La0.67A0.33MnO3, A = Pb/Ca	[19]