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    Growth and optical spectroscopy of KPb2Cl5 crystal containing Mn2+

    Access Status
    Fulltext not available
    Authors
    Jia, Guohua
    Wang, H.
    Wang, C.
    Zhao, S.
    Deng, D.
    Huang, L.
    Hua, Y.
    Li, C.
    Xu, S.
    Date
    2011
    Type
    Journal Article
    
    Metadata
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    Citation
    Jia, G. and Wang, H. and Wang, C. and Zhao, S. and Deng, D. and Huang, L. and Hua, Y. et al. 2011. Growth and optical spectroscopy of KPb2Cl5 crystal containing Mn2+. Journal of Alloys and Compounds. 509 (33): pp. 8365-8369.
    Source Title
    Journal of Alloys and Compounds
    DOI
    10.1016/j.jallcom.2011.05.010
    ISSN
    0925-8388
    School
    Nanochemistry Research Institute
    URI
    http://hdl.handle.net/20.500.11937/22735
    Collection
    • Curtin Research Publications
    Abstract

    KPb2Cl5:Mn2+ crystal with sizes of centimeters has been successfully grown by a modified Bridgman method. The electronic spectra of Mn2+ in the title compound have been measured at different temperatures and compared, revealing that the red emission observed at 10 and 77 K in the spectral range from 500 to 800 nm, which vanishes at room temperature, is associated with the radiation from Pb2+ ions with adjacent defects whereas the orange-red emission in the spectral range from 530 to 680 nm can be undoubtedly attributed to the spin forbidden transition 4T1g (4G) ? 6A 1g(6S) of Mn2+. The electronic excitation spectra are interpreted in a strong crystal field scheme with the use of the Tanabe-Sugano diagram. Good agreement with the experimental spectroscopic data is obtained with the use of crystal field splitting parameter 10Dq = 7902 cm-1, Racah parameters B = 618 cm-1, and C = 3549 cm -1. © 2011 Elsevier B.V. All rights reserved.

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