Electron-doped rare-earth manganates of the type Ca(1-x)Ln(x) MnO3 (Ln = La, Nd, Gd or Y) with x = 0.2 and 0.3 show charge ordering in the 150-270 K range, but the charge-ordering transition temperature, T-CO generally ...

We report results of tunneling studies on the charge ordering compound Nd0.5Sr0.5MnO3 in a magnetic field up to 6 T and for temperature down to 25 K. We show that a gap (2 Delta(CO) approximate to 0.5 eV opens up in the ...

Substitution of Ti and Zr in the B-site of La0.7Ca0.3MnO3 lowers the TC and the temperature of insulator—metal transition. Substitution of Ru in the B-site of La0.7Ca0.3MnO3, however, does not alter the TC or TIM significantly. ...

Giant magnetoresistance and related properties such as charge-ordering in manganates have been investigated with great vigor in the last two years. The manganates have turned out to be truly exciting systems, exhibiting a ...

Electron transport and magnetic properties of the cation-deficientcompositions of LaMnO3with the nominal formulae La1−δMnO3(0.0 ≤ δ ≤ 0.2) and LaM1−δ′O3(0.0 ≤ δ′ ≤ 0.2) were investigated after their defect structures were ...

The double perovskite Sr2CrMoO6 with Cr3+-O-Mo5+ pairs is ferrimagnetic (TN=450 K), but there is considerable site disorder. The disorder appears to be responsible for the low value of magnetization. At 5 or 6 T, the ...

A reentrant transition from an incipient charge-ordered (CO) state to a charge-delocalized ferromagnetic (CDFM) state has been established in the manganate Nd0.25La0.25Ca0.5MnO3, in which the average A-site ionic radius ...