Photo- and thermally induced interdiffusion in Se/As2 S3 nanomultilayers prepared by pulsed laser deposition and thermal evaporation

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Abstract

The effects of light- and thermally stimulated interdiffusion in Se/As2S3 nanomultilayers (NML) with modulation period of 6-9 nm fabricated by pulsed laser deposition (PLD) and by the method of cyclic thermal evaporation (CTE) of the Se and As2S3 components were investigated by means of direct low-angle X-ray diffraction (LAXRD) measurements and by indirect methods of optical measurements. More pronounced nano-granular structure is characteristic for PLD samples but at the same time the interfaces are essentially sharpened, the periodicity and the initial blue-shift of the optical absorption edge are better in comparison with CTE samples. Somewhat less efficient interdiffusion and changes of optical parameters i.e. amplitude-phase recording in PLD samples in comparison with CTE ones may be caused by different deposition conditions, ratio of sub-layer's thickness and their structure, eventually by changes in chemical composition.

Original languageEnglish
Pages (from-to)948-952
Number of pages5
JournalJournal of Physics and Chemistry of Solids
Volume68
Issue number5-6
DOIs
Publication statusPublished - May 2007

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Thermal evaporation
Pulsed laser deposition
pulsed laser deposition
evaporation
optical measurement
blue shift
Light absorption
periodic variations
chemical composition
optical absorption
recording
Modulation
modulation
X ray diffraction
Chemical analysis
diffraction
x rays

Keywords

  • A. Multilayers
  • A. Nanostructures
  • A. Non-crystalline materials
  • D. Diffusion
  • D. Optical properties

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

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title = "Photo- and thermally induced interdiffusion in Se/As2 S3 nanomultilayers prepared by pulsed laser deposition and thermal evaporation",
abstract = "The effects of light- and thermally stimulated interdiffusion in Se/As2S3 nanomultilayers (NML) with modulation period of 6-9 nm fabricated by pulsed laser deposition (PLD) and by the method of cyclic thermal evaporation (CTE) of the Se and As2S3 components were investigated by means of direct low-angle X-ray diffraction (LAXRD) measurements and by indirect methods of optical measurements. More pronounced nano-granular structure is characteristic for PLD samples but at the same time the interfaces are essentially sharpened, the periodicity and the initial blue-shift of the optical absorption edge are better in comparison with CTE samples. Somewhat less efficient interdiffusion and changes of optical parameters i.e. amplitude-phase recording in PLD samples in comparison with CTE ones may be caused by different deposition conditions, ratio of sub-layer's thickness and their structure, eventually by changes in chemical composition.",
keywords = "A. Multilayers, A. Nanostructures, A. Non-crystalline materials, D. Diffusion, D. Optical properties",
author = "V. Tak{\'a}ts and P. Nemec and A. Cs{\'i}k and S. K{\"o}k{\'e}nyesi",
year = "2007",
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language = "English",
volume = "68",
pages = "948--952",
journal = "Journal of Physics and Chemistry of Solids",
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TY - JOUR

T1 - Photo- and thermally induced interdiffusion in Se/As2 S3 nanomultilayers prepared by pulsed laser deposition and thermal evaporation

AU - Takáts, V.

AU - Nemec, P.

AU - Csík, A.

AU - Kökényesi, S.

PY - 2007/5

Y1 - 2007/5

N2 - The effects of light- and thermally stimulated interdiffusion in Se/As2S3 nanomultilayers (NML) with modulation period of 6-9 nm fabricated by pulsed laser deposition (PLD) and by the method of cyclic thermal evaporation (CTE) of the Se and As2S3 components were investigated by means of direct low-angle X-ray diffraction (LAXRD) measurements and by indirect methods of optical measurements. More pronounced nano-granular structure is characteristic for PLD samples but at the same time the interfaces are essentially sharpened, the periodicity and the initial blue-shift of the optical absorption edge are better in comparison with CTE samples. Somewhat less efficient interdiffusion and changes of optical parameters i.e. amplitude-phase recording in PLD samples in comparison with CTE ones may be caused by different deposition conditions, ratio of sub-layer's thickness and their structure, eventually by changes in chemical composition.

AB - The effects of light- and thermally stimulated interdiffusion in Se/As2S3 nanomultilayers (NML) with modulation period of 6-9 nm fabricated by pulsed laser deposition (PLD) and by the method of cyclic thermal evaporation (CTE) of the Se and As2S3 components were investigated by means of direct low-angle X-ray diffraction (LAXRD) measurements and by indirect methods of optical measurements. More pronounced nano-granular structure is characteristic for PLD samples but at the same time the interfaces are essentially sharpened, the periodicity and the initial blue-shift of the optical absorption edge are better in comparison with CTE samples. Somewhat less efficient interdiffusion and changes of optical parameters i.e. amplitude-phase recording in PLD samples in comparison with CTE ones may be caused by different deposition conditions, ratio of sub-layer's thickness and their structure, eventually by changes in chemical composition.

KW - A. Multilayers

KW - A. Nanostructures

KW - A. Non-crystalline materials

KW - D. Diffusion

KW - D. Optical properties

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U2 - 10.1016/j.jpcs.2007.01.020

DO - 10.1016/j.jpcs.2007.01.020

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SP - 948

EP - 952

JO - Journal of Physics and Chemistry of Solids

JF - Journal of Physics and Chemistry of Solids

SN - 0022-3697

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