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Title: Equation of state for Eu-doped SrSi{sub 2}O{sub 2}N{sub 2}

α-SrSi{sub 2}O{sub 2}N{sub 2} is one of the recently studied oxonitridosilicates applicable in optoelectronics, in particular in white LEDs. Its elastic properties remain unknown. A survey of literature shows that, up to now, nine oxonitridosilicate materials have been identified. For most of these compounds, doped with rare earths and manganese, a luminescence has been reported at a wavelength characteristic for the given material; all together cover a broad spectral range. The present study focuses on the elastic properties of one of these oxonitridosilicates, the Eu-doped triclinic α-SrSi{sub 2}O{sub 2}N{sub 2}. High-pressure powder diffraction experiments are used in order to experimentally determine, for the first time, the equation of state of this compound. The in situ experiment was performed for pressures ranging up to 9.65 GPa, for Eu-doped α-SrSi{sub 2}O{sub 2}N{sub 2} sample mounted in a diamond anvil cell ascertaining the hydrostatic compression conditions. The obtained experimental variation of volume of the triclinic unit cell of α-SrSi{sub 2}O{sub 2}N{sub 2}:Eu with rising pressure served for determination of the Birch-Murnaghan equation of state. The determined above quoted bulk modulus is 103(5) GPa, its first derivative is 4.5(1.1). The above quoted bulk modulus value is found to be comparable to that of earliermore » reported oxynitrides of different composition.« less
Authors:
 [1] ;  [2] ; ; ; ;  [1] ; ; ;  [3] ;  [4] ;  [5] ;  [6] ;  [5] ;  [1] ;  [7]
  1. Polish Academy of Sciences, Institute of Physics, al. Lotników 32/46, PL-02-668 Warsaw (Poland)
  2. (ISSC), Russian Academy of Sciences, Ural Branch, 91, Pervomayskaya str., 620219 Ekaterinburg (Russian Federation)
  3. Institute of Experimental Physics, University of Gdańsk, ul. Wita Stwosza 57, PL-80-952 Gdańsk (Poland)
  4. MAX IV Laboratory, Lund University, SE-22100 Lund (Sweden)
  5. Department of Chemistry, National Taiwan University, Taipei 106, Taiwan (China)
  6. (China)
  7. (Poland)
Publication Date:
OSTI Identifier:
22308759
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 141; Journal Issue: 1; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; COMPARATIVE EVALUATIONS; DIFFRACTION; DOPED MATERIALS; ELASTICITY; EQUATIONS OF STATE; LUMINESCENCE; MANGANESE; OXYGEN COMPOUNDS; RARE EARTHS; WAVELENGTHS