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Physical characterizations of Li3PO4 single crystal grown by the flux method

Jing Li 1Jiyang Wang Yang Zhang Tianzhen Zhang 

1. State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China

  Recently, solid-state lithium ion electrolytes materials have been attracted intensive interests for their wide applications in batteries and related technologies. Li3PO4 crystal was important materials with possible applications to fast ion conductors because of its super ionic conductivity effect.

   Li3PO4 crystal has three forms: α, β, λ, at past, they can be obtained by solid-state reaction. In this paper, we report the details of Li3PO4 crystals growth using flux system and the results of various characterizations of the grown crystals.

   Transparent single crystals, Li3PO4 have been grown by flux method. We analyze the phase transition temperature of Li3PO4 crystals, the results indicate that we can obtain two different system β, λ by using two different fluxes.

  The as-grown crystals were characterized by single-crystal X-ray diffraction, differential thermal analysis (DTA) and thermo-gravimetric analysis (TGA) techniques. The results show that the as-grown crystals were well crystallized and indexed in a hexagonal crystal system with space group Pnma. The crystal is stable in the measurement temperature range of 25–1130°C, and the frequencies of the vibration modes of the crystal were also obtained from measurements of the infrared spectrum. X-ray photoelectron spectroscopy (XPS) was employed to measure the chemical or electronic state of each element.

  The results prove that Li3PO4 crystals grown by flux method have better characteristic.


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Presentation: Poster at 17th International Conference on Crystal Growth and Epitaxy - ICCGE-17, Topical Session 7, by Jing Li
See On-line Journal of 17th International Conference on Crystal Growth and Epitaxy - ICCGE-17

Submitted: 2013-02-28 07:47
Revised:   2013-07-18 21:01