title: Vertical La0.7Ca0.3MnO3 nanorods tailored by high magnetic field assisted pulsed laser deposition.
abstract: La0.7Ca0.3MnO3 (LCMO) thin films on (LaAlO3)0.3(Sr2AlTaO6)0.7 (001) [LSAT (001)] single crystal substrates have been prepared by high magnetic field assisted pulsed laser deposition (HMF-PLD) developed by ourselves. Uniformly sized and vertically aligned nanorod structures can be obtained under an applied high magnetic field above 5 T, and the dimension size of the nanorods can be manipulated by varying the applied magnetic field. It is found that the magnetic anisotropy is strongly correlated to the dimension size of the nanorods. A significantly enhanced low-field magnetoresistance (LFMR) of -36% under 0.5 T at 100 K can be obtained due to the enhanced carrier scattering at the vertical grain boundaries between the nanorods for the LCMO films. The growth mechanism of the nanorods has been also discussed, which can be attributed to the variation of deposition rate, adatom surface diffusion, and nucleation induced by the application of a high magnetic field in the film processing. The successful achievements of such vertical nanorod structures will provide an instructive route to investigate the physical nature of these nanostructures and achieve nanodevice manipulation.
authors.affiliation: Key Laboratory of Materials Physics, Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China.
authors.forename: Kejun
authors.initials: K
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Materials Physics, Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China.
authors.forename: Jianming
authors.initials: J
authors.lastname: Dai
authors.affiliation: Key Laboratory of Materials Physics, Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China.
authors.forename: Xuebin
authors.initials: X
authors.lastname: Zhu
authors.affiliation: Key Laboratory of Materials Physics, Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China.
authors.forename: Xiaoguang
authors.initials: X
authors.lastname: Zhu
authors.affiliation: Key Laboratory of Materials Physics, Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China.
authors.forename: Xuzhong
authors.initials: X
authors.lastname: Zuo
authors.affiliation: Key Laboratory of Materials Physics, Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China.|University of Science and Technology of China, Hefei, 230026, China.
authors.forename: Peng
authors.initials: P
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Materials Physics, Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China.
authors.forename: Ling
authors.initials: L
authors.lastname: Hu
authors.affiliation: Key Laboratory of Materials Physics, Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China.
authors.forename: Wenjian
authors.initials: W
authors.lastname: Lu
authors.affiliation: Key Laboratory of Materials Physics, Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China.
authors.forename: Wenhai
authors.initials: W
authors.lastname: Song
authors.affiliation: High Magnetic Field Laboratory, Chinese Academy of Science, Hefei, 230031, China.
authors.forename: Zhigao
authors.initials: Z
authors.lastname: Sheng
authors.affiliation: High Magnetic Field Laboratory, Chinese Academy of Science, Hefei, 230031, China.|University of Science and Technology of China, Hefei, 230026, China.
authors.forename: Wenbin
authors.initials: W
authors.lastname: Wu
authors.affiliation: Key Laboratory of Materials Physics, Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China.|High Magnetic Field Laboratory, Chinese Academy of Science, Hefei, 230031, China.
authors.forename: Yuping
authors.initials: Y
authors.lastname: Sun
authors.affiliation: Nanjing National Laboratory of Microstructures and Department of Physics, Nanjing University, Nanjing 210093, P.R. China.
authors.forename: Youwei
authors.initials: Y
authors.lastname: Du