Magnetic properties of Nd1−xKxMnO3 compounds

Critical behavior studies in ferromagnetic (Nd, K)–Mn–O compounds

“…The FM clusters provide an average exchange field in the system which in turn facilitates the FM alignment of bulk magnetic spins in the critical region. The signature of FM clustering was observed from the analysis of magnetic susceptibility in the PM region [35]. The effective magnetic moment was found to be higher than that of theoretical value.…”

Effects of monovalent cation doping on the structure, microstructure, lattice distortion and magnetic behavior of single crystalline NdMnO3compounds

“…Alonso et al 12 reported the unit cell volume of NdMnO 3 as 238.65 Å 3 from neutron diffraction measurements. Samantaray et al 27 reported the unit cell volume of Nd 0.85 K 0.15 MnO 3 as 231.6 Å 3 and Lakshmi and…”

“…15 However, the in depth structural characterization and study of the monovalent cation doping effect on octahedral distortion were not addressed previously. [24][25][26][27][28] NdMnO 3 shows a paramagnetic to antiferromagnetic phase transition with Neel temperature at 67 K. 29 On the other hand, both 15 mol% Na-and K-doped NdMnO 3 compounds show paramagnetic to ferromagnetic phase transitions with a Curie temperature at ∼100 K. [25][26][27][28][29] In this article emphasis is given on the following aspects: (i) detailed crystal structures, microstructures and lattice distortions in these three compounds due to monovalent doping, (ii) the effect of sintering temperature on the formation of these compounds and (iii) temperature dependent magnetization to elucidate the effect of monovalent doping on the magnetic properties of NdMnO 3 .…”