title: Size-manipulable synthesis of single-crystalline BaMnO3 and BaTi1/2Mn1/2O3 nanorods/nanowires.
abstract: We report a size-manipulable synthesis of single-crystalline nanorods/nanowires of barium manganite (BaMnO(3)) and barium titanium manganite (BaTi(1/2)Mn(1/2)O(3)) by using the composite-hydroxide-mediated approach. The synthesis cleanly yields nanorods with a hexagonal perovskite structure. Typical nanorods have widths ranging between 50 and 100 nm, and the lengths can be easily controlled by time and temperature or by adding a small amount of water during the synthesis process. Resistance measurement shows that a phase transition happened at 58 K on BaMnO(3). The photoluminescence spectrum of BaTi(1/2)Mn(1/2)O(3) presents two emission peaks at wavelengths of 465 and 593 nm, corresponding to blue and green fluorescence. The ability to synthesize nanorod manganites of a desired length should enable detailed investigations of the size-dependent evolution of magnetism, magnetoresistance, nanoscale phase separation, and realization of a nanodevice of magnetic sensors.
authors.affiliation: School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA.
authors.forename: C G
authors.initials: CG
authors.lastname: Hu
authors.forename: H
authors.initials: H
authors.lastname: Liu
authors.forename: C S
authors.initials: CS
authors.lastname: Lao
authors.forename: L Y
authors.initials: LY
authors.lastname: Zhang
authors.forename: D
authors.initials: D
authors.lastname: Davidovic
authors.forename: Z L
authors.initials: ZL
authors.lastname: Wang
mesh_terms: D017609:Barium Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D003460:Crystallization; D017895:Manganese Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D043942:Nanotubes / Q000737:chemistry*; D053770:Nanowires / Q000737:chemistry*; D010316:Particle Size; D014025:Titanium / Q000737:chemistry*
chemical_list: D017609:Barium Compounds; D017895:Manganese Compounds; D014025:Titanium