Abstract
We have synthesized and investigated the effect of Ag doping at x = 0 and 0.10 in Pr0.67Sr1−xAgxMnO3 via solid state reaction route. The Rietveld refinement of XRD data shows that these compounds crystallize in an orthorhombic structure with Pnma space group. On increasing the Ag content to x = 0.10, a linear variation in unit cell volume and lattice parameters is observed. The temperature dependent zero-field and in-field resistivity has been measured between 5 K to 300 K. The samples show a systematic variation in metal to insulator transition temperature and a large magnetoresistance (MR) is also observed with maxima at TMI. The highest value of Temperature Coefficient of Resistance (TCR) % has been observed by us for the first time.
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