Abstract
The rare-earth metals La, Ce, Nd, Sm, Tb, Tm, Yb, and Lu as well as Sc and Y were inserted into polycrystalline β- (γ-)AgI films for the first time under the conditions characteristic of topochemical reactions. Sm was also first inserted into films of the superionic conductor CsAg4Br3-xI2+x. The specific features of the obtained optical spectra were explained by the formation of F-centers, disordering of the initial crystal structures of β- (γ-)AgI, and synthesis of new non-stoichiometric phases containing La, Ce, or Sm. The optical band gap Eg in the new compounds, termed rare-earth silver halides, was determined from the position of the edge exciton and was approximately 3.7 eV at 293 K. Possible extensions of the conclusions drawn onto a large massive of AgI-based compounds varying in chemical composition and structure are proposed.
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References
Andreev, V. and Goggman, V. (1983) “Light Absorption in RbAg4I5 Crystals Coloured by an Iodine”, Phys. Solid State 25, 3480–3482.
Bonch-Bruevich, V., Zvyagin, I., Knaioe, R., Enderlain, R., and Essler, B. (1981) Electron theory of disordered semiconductors, Nauka, Moscow.
Cardona, M. (1963) “Optical Properties of the Silver and Cuprous Halides”, Phys. Rev. 129, 69–78.
Despotuli, A. (1983) “Ionic Conductivity and Phase Transitions in Ag4Rb1-xCsxI5”, Phys. Solid State 25, 3155–3155.
Despotuli, A., Zagorodnev, B., Lichkova, N., and Minencova, N. (1989) “New High Conducting Solid Electrolytes CsAg4 Br3-xI2+x (0.25<x<1)”, Phys. Solid State 31, 242–244.
Despotuli, A., Lichkova, N., Minenkova, N., and Nosenko, S. (1990) “Synthesis and Some Properties of Thin-Films of CsAg4Br3-xI2+x and RbAg4I5 Solid Electrolytes”, Electrochem. 26, 1524–1528.
Despotuli, A. and Despotuli, L. (1997)”Influence of Samarium on Optical Absorption in Thin Films of the Solid Electrolyte RbAg4I5“, Phys. Solid State 39, 1374–1377.
Despotuli, A., Matveeva, L., and Despotuli, L. (1998) “UV Absorption of Thin-Film RbAg4I5-RE (Sm, Yb) Systems”, Ionics 4, 383–389.
Despotuli, A. and Matveeva, L. (1999) “UV Absorption of Thin-Film RbAg4I5-RE (Sm, Yb) Systems”, Phys Solid State 41, 218–222.
Edamatzu, K., Ikezawa, M., Sato, K., Kono, S., and Sagawa, T. (1983) “Fundamental Optical Absorption and Valence Bands in Alkali Silver Halide Crystals”, J. Phys. Soc. Jpn. 52, 1521–1524.
Huheey, J. (1983) Inorganic Chemistry, 3rd Edition, Harrer & Row Publishers, New York.
Keppens.V., Mandrus, D., Sales, B., Chakoumakos, B., Dai.P., Coldea, R., Maple, M., Gajewski, D., Freeman, E., and Bennington, S. (1998) “Localized Vibrational Modes in Metallic Solids”, Nature 395, 876–878.
Kittel, Ch. (1971), Introduction to Solid State Physics, 4th Edition, John Wiley & Sons Inc., New York.
Kompan, M., Venus, Y, and Mikhkelsoo, V. (1990) “Spectroscopic Manifestation of Continuous Character of Mobile Ions Distribution in the Superionic Conductor Na5RESi4O12”, Phys. Solid State 32, 889–894.
Naglim, I., German, A., and Katzir, A. (1998) “Silver Halide Lasers and Amplifiers: Nd Ion Diffusion in AgBr Crystals”, SPIE 3262, 197–204.
Raleigh, D. (1977) “Structural Principles for Silver Halide Superionic Conductors”, J. Electrochem. Soc. 124, 1157–1160.
Valverde, N. (1980) “Thermodynamic Stabilization of the Solid Electrolyte RbAg4I5“, J. Electrochem. Soc. 127, 2425–2429.
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© 2002 Springer Science+Business Media Dordrecht
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Despotuli, A.L. (2002). Insertion of Rare -Earth Metals Into AgI-Based Compounds. First Evidence of Disordering and Strong Modification of β- and γ-AgI Crystal Structures. In: Julien, C., Pereira-Ramos, J.P., Momchilov, A. (eds) New Trends in Intercalation Compounds for Energy Storage. NATO Science Series, vol 61. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0389-6_30
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DOI: https://doi.org/10.1007/978-94-010-0389-6_30
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