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Journal Article

Systematical, experimental investigations on LiMgZ (Z = P, As, Sb) wide band gap semiconductors

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Beleanu, A., Mondeshki, M., Juan, Q., Casper, F., Felser, C., & Porcher, F. (2011). Systematical, experimental investigations on LiMgZ (Z = P, As, Sb) wide band gap semiconductors. Journal of Physics D: Applied Physics, 44(47): 475302, pp. 1-5. doi:10.1088/0022-3727/44/47/475302.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0018-B5A1-A
This work reports on the experimental investigation of wide band gap compounds LiMgZ (Z = P, As, Sb), which are promising candidates for opto-electronics and anode materials for lithium batteries. The compounds crystallize in the cubic (C1(b)) MgAgAs structure (space group F (4) over bar 3m). The polycrystalline samples are synthesized by solid-state reaction methods. X-ray and neutron diffraction measurements show homogeneous, single-phased samples. The electronic properties are studied using the direct current method. Additionally, UV-Vis diffuse reflectance spectra are recorded in order to investigate the band gap nature. The measurements show that all compounds exhibit semiconducting behaviour with direct band gaps of 1.0-2.3 eV depending on the Z element. A decrease in the peak widths in the static (7)Li nuclear magnetic resonance spectra with increasing temperature is observed, which can be directly related to an increase in Li ion mobility.