Synthesis of Ordered Ultra-long Manganite Nanowires via Electrospinning Method
Jun Zheng1, Kai Du1, Di Xiao1, Zheng-Yang Zhou1, Wen-Gang Wei1,2, Jin-Jie Chen1, Li-Feng Yin1,3**, Jian Shen1,3**
1State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433 2College of Physics Science and Information Engineering, Hebei Normal University, Shijiazhuang 050024 3Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093
Abstract：We develop a new electrospinning method to prepare ultra-long ordered La$_{1-x}$Sr$_{x}$MnO$_{3}$ (LSMO) nanowires. The length is up to several centimeters and is only limited by the size of the collector. The well-ordered straight-line structure ensures the transport measurement, which is impossible to be carried out for the random nanowires fabricated by the traditional electrospinning method. Magnetic and transport measurements indicate that the physical properties of the LSMO nanowires depend sensitively on the doping concentration. At the optimum doping, the LSMO wires are ferromagnetic at room temperature with a metal-insulator transition temperature close to room temperature. Magnetic force microscopy studies are also performed to provide a microscopic view of these ultra-long nanowires.
2016, Vol. 33 
