Relation between EPR spectra and electrical conductivity of Pr1−Pb MnO3 perovskites

Magnetic, electron magnetic resonance and optical studies of Pr0.7Pb0.3MnO3nanoparticles

“…By combining the above results with the electron spin resonance spectra (ESR), it was suggested that phase separation occurs well above the Curie temperature [6][7][8]. In addition, spin-glass (SG)-like behaviour, the giant magnetocaloric effect (GMCE) and giant magnetoresistance (GMR) effects were observed from the magnetization, thermoelectric and magnetotransport measurements performed on the bulk PC PPMO by various groups [9][10][11][12][13].…”

Melting of the charge-ordering state by ruthenium doping in Ca0.6Pr0.4Mn1−yRuyO3 (y=0, 0.03, 0.05, 0.07) perovskites

“…Using the VRH law and the cell-volume value V given in Table 1 110 Ko To150 K by fitting procedure for Fig. 4 curves (see also [5]). Based on the formula R ¼ 0.376 l(T o /T) 1/4 we estimated the hopping distance of carriers in all samples at 120 K and result is shown in the last column of Table 1.…”