Metastable zinc-blende MgS structure: Combined experimental and theoretical study (Articolo in rivista)

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  • Metastable zinc-blende MgS structure: Combined experimental and theoretical study (Articolo in rivista) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.79.235310 (literal)
Alternative label
  • Bocchi C. a; Catellani A. a; Germini F. a; Nasi L. a; Morrod J. K. b; Prior K. A. b; Calestani G. c (2009)
    Metastable zinc-blende MgS structure: Combined experimental and theoretical study
    in Physical review. B, Condensed matter and materials physics (Online)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Bocchi C. a; Catellani A. a; Germini F. a; Nasi L. a; Morrod J. K. b; Prior K. A. b; Calestani G. c (literal)
Pagina inizio
  • 235310-1 (literal)
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  • http://prb.aps.org/abstract/PRB/v79/i23/e235310 (literal)
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  • 79 (literal)
Rivista
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  • In: Physical Review B, vol. 79 article n. 235310. American Physical Society, 2009. (literal)
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  • 10 (literal)
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  • 23 (literal)
Note
  • Scopu (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • a CNR-IMEM Institute, Parco Area delle Scienze 37/A, I-43100 Parma, Italy; b School of Engineering and Physical Sciences, Brewster Building, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom; c Department of Chemistry, Parma University, Parco Area delle Scienze 17/A, I-43100 Parma, Italy (literal)
Titolo
  • Metastable zinc-blende MgS structure: Combined experimental and theoretical study (literal)
Abstract
  • MgS/ZnSe/GaAs multilayers with the MgS thickness ranging from 20 to 140 nm were grown at 300 °C by molecular beam epitaxy on [001] GaAs substrates. The samples were studied by using several X-ray methods and transmission electron microscopy. The coexistence of metastable zinc-blende (ZB) and rock-salt (RS) MgS structural phases were evidenced and discussed. The analysis of reciprocal space maps of the x-ray intensity distribution around asymmetrical reciprocal lattice nodes allowed us to determine the strain status of the MgS layers and to show that the ZB-MgS phase were pseudomorphic in also the case of the thickest film. The lattice parameter of the pure ZB-MgS phase ranging between 0.56333 aMgS 0.56367 nm was obtained by extrapolation from X-ray diffraction data, taking into account that there was a Zn incorporation during the MgS growth estimated in the range 0.005 d xZn d 0.02, and predicted ab initio elastic constants. (literal)
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