Study of Temperature Stability of the Magnetoresistance and Transport Properties in La0.6Sr0.15Na0.10.15MnO3 with the Addition of Ag
A series of bulk polycrystalline samples of La0.6Sr0.15Na0.10.15MnO3( represents vacancy)with Ag addition were prepared by conventional Sol-gel reaction processing in air.The mol proportion between La0.6Sr0.15Na0.10.15MnO3 and Ag is 1:x (x=0.00,0.016,0.04,0.1). This article focuses on the impact of Ag doping on the parent structure, magnetic properties and magnetoresistance. We have gotten the following experimental results:X-ray diffraction patterns show that a weak Ag phase appears when ;The Curie temperature of the doped samples is higher than that of the matrix sample and it reduces as x increases. The resistivity of the doped samples is bigger than that of the parent sample in zero field and it increases as x increases.In a quite wide temperature range (207K-286K), MR maintains the value of 5.08% (0.20%) when x=0.04. So the CMR temperature stability has been improved.
Chunliang Zhang and Liangchi Zhang
L. C. Hu and H. W. Zhao, "Study of Temperature Stability of the Magnetoresistance and Transport Properties in La0.6Sr0.15Na0.10.15MnO3 with the Addition of Ag", Key Engineering Materials, Vols. 531-532, pp. 396-399, 2013