One-Dimensional Perovskite Manganite Oxide Nanostructures: Recent Developments in Synthesis, Characterization, Transport Properties, and Applications.

Lei Li,Heng Wu,Lizhi Liang,Xinhua Zhu

doi:10.1186/s11671-016-1320-1

Abstract

One-dimensional nanostructures, including nanowires, nanorods, nanotubes, nanofibers, and nanobelts, have promising applications in mesoscopic physics and nanoscale devices. In contrast to other nanostructures, one-dimensional nanostructures can provide unique advantages in investigating the size and dimensionality dependence of the materials’ physical properties, such as electrical, thermal, and mechanical performances, and in constructing nanoscale electronic and optoelectronic devices. Among the one-dimensional nanostructures, one-dimensional perovskite manganite nanostructures have been received much attention due to their unusual electron transport and magnetic properties, which are indispensable for the applications in microelectronic, magnetic, and spintronic devices. In the past two decades, much effort has been made to synthesize and characterize one-dimensional perovskite manganite nanostructures in the forms of nanorods, nanowires, nanotubes, and nanobelts. Various physical and chemical deposition techniques and growth mechanisms are explored and developed to control the morphology, identical shape, uniform size, crystalline structure, defects, and homogenous stoichiometry of the one-dimensional perovskite manganite nanostructures. This article provides a comprehensive review of the state-of-the-art research activities that focus on the rational synthesis, structural characterization, fundamental properties, and unique applications of one-dimensional perovskite manganite nanostructures in nanotechnology. It begins with the rational synthesis of one-dimensional perovskite manganite nanostructures and then summarizes their structural characterizations. Fundamental physical properties of one-dimensional perovskite manganite nanostructures are also highlighted, and a range of unique applications in information storages, field-effect transistors, and spintronic devices are discussed. Finally, we conclude this review with some perspectives/outlook and future researches in these fields.

Highlights

One-dimensional nanostructures, including nanowires, nanorods, nanotubes, nanofibers, and nanobelts, have promising applications in mesoscopic physics and nanoscale devices
In summary, this article provides a comprehensive review on recent developments in synthesis, characterization, transport properties, and applications of one-dimensional manganite oxide nanostructures
Most of the perovskite manganite oxide materials need high deposition temperature and the typical electron beam and photo resists are incompatible with this requirement

Summary

Chemical Approaches

Nanostructures Synthesized by Hydrothermal Process A hydrothermal method is a common method to fabricate manganite nanowires, which usually involves heating an aqueous suspension of precursor in a Teflon vessel at befitting temperatures and pressures. Single-crystalline La0.5Ca0.5MnO3 nanowires with lengths ranging from several to several tens of micrometers and a uniform diameter of ~80 nm were grown by a hydrothermal method [36]. Rao et al [37] reported the hydrothermal synthesis of the charge-ordering Pr0.5Ca0.5MnO3 (PCMO) single-crystalline nanowires with a diameter of ~50 nm and a length of a few microns. They found that in these PCMO nanowires, the charge-ordered phase was weakened and the antiferromagnetic phase disappeared, whereas a ferromagnetic phase was observed in this one-dimensional manganite oxide nanowire. The La0.6Sr0.4CoO3 nanotubes with a diameter of 100 nm and the nanowires with a diameter of 40–60 nm were formed by shaping the sol with the cylinder pores in an AAO template [45]

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Conclusions