123 citations · 290 across the 12 of their papers we have counts for
8 papers · 1 filter
Electric field driven destabilization of the insulating state in nominally pure LaMnO3
Rajib Nath, A. K. Raychaudhuri, Ya. M. Mukovskii +3
We report an electric field driven destabilization of the insulating state in nominally pure LaMnO3 single crystal with a moderate field which leads to a resistive state transition…
Current-driven orbital order-disorder transition in LaMnO3
Parthasarathi Mondal, Dipten Bhattacharya, P. Mandal
We report significant influence of electric current on the orbital order-disorder transition in LaMnO3. The transition temperature T_OO, thermal hysteresis in the resistivity (rho)…
Orbital order-disorder transition in doped perovskite manganites: influence of intrinsic octahedral-site distortion
Parthasarathi Mondal, Dipten Bhattacharya, Pranab Choudhury
The orbital order-disorder transition temperature (T_OO) versus tolerance factor (t) plot switches from monotonic to non-monotonic beyond a doping level (x) ~ 10 atom% in a family…
Evolution of orbital phases with particle size in nanoscale stoichiometric LaMnO3
Parthasarathi Mondal, Dipten Bhattacharya, Anwesha Maity +3
The thermodynamically stable long-range orbital order in bulk LaMnO3 becomes metastable at nanoscale around a critical particle size d_C~20 nm. The orbital order-disorder transitio…
Dielectric anomaly at T_N in LaMnO3
Parthasarathi Mondal, Dipten Bhattacharya, Pranab Choudhury +1
We observe a distinct anomaly in dielectric permittivity (epsilon') as well as relaxation time (tao_0) versus temperature (T) pattern at the antiferromagnetic transition point (T_N…
Universal scaling of latent heat of orbital order-disorder transition with average R-site ion size in perovskite RMnO3 systems
Parthasarathi Mondal, Dipten Bhattacharya
The latent heat (L) of orbital order-disorder transition in single-valent perovskite manganite series La(1-x)R(x)MnO3 (R = Pr, Nd, Gd; x = 0.0-1.0) decreases with the decrease in a…
Particle-size dependence of orbital order-disorder transition in LaMnO3
Nandini Das, Parthasarathi Mondal, Dipten Bhattacharya
The latent heat (L) associated with the orbital order-disorder transition at T_JT is found to depend significantly on the average particle size (d) of LaMnO3. It rises slowly with…
Dielectric anomaly at the orbital order-disorder transition in LaMnO_(3+delta)
Parthasarathi Mondal, Dipten Bhattacharya, Pranab Choudhury
We report a novel dielectric anomaly around the Jahn-Teller orbital order-disorder transition temperature T_JT in LaMnO_(3+delta). The transition has been characterized by resistiv…