Growth and characterization of large La_1‐xPb_xMnO_3+δ (x=0.32–0.35) crystals

Abstract

Large crystals of La 0.63 Pb 0.37 MnO 3+δ with small La(Pb)-deficiency of about 0.005-0.01 at.% were grown by high temperature solution growth method. The structure of the grown crystals was determined as rhombohedral with R-3 space group by single-crystal X-ray diffractometry. The surface morphology of the crystals and the exact chemical composition was examined by scanning electron microscopy and energy dispersive X-ray analysis methods, respectively. The IR-transmission spectrum reveals the presence of Mn 3+ O 6 -and Mn 4+ O 6 -octahedra in the lattice of La 0.63 Pb 0.37 Mn O 3+δ crystals.

Magnetic and transport characteristics of oxygenated polycrystalline La0.6Pb0.4MnO3

“…They found, that the magnetoresistance and the maximal Curie temperature were 5.60% (at room temperature in a field of 10 kOe) and 360 K, respectively, for the system with x ¼0.4. There are also few different type of investigations concerning polycrystalline bulk [13][14][15] and single crystalline [16][17][18][19] LPMO materials, thin films [20][21][22][23] and nanograins [24,25] of LPMO.…”