EPR study of Mn2+ electronic states for the nanosized ZnS

Mn powder modified by acrylic acid

T. Igarashi, Tetsuhiko Isobe, M. Senna

Research output: Contribution to journalArticle

100 Citations (Scopus)

Abstract

The photoluminescence intensity at 580 nm for 2-3 nm ZnS doped with Mn2+ (ZnS:Mn) increases after modification by acrylic acid (AA). Mn2+ electronic states are examined by electron paramagnetic resonance (EPR) spectroscopy. Signal I with g=2.0024 and hyperfine coupling constant |A|=6.9 mT and signal II with g=2.0013 and |A|=9.0 mT are observed in the EPR spectrum of unmodified ZnS:Mn. Signal I is assigned to isolated Mn2+ ions substitutionally incorporated in cubic ZnS. The intensity of signal II relative to signal I increases with decreasing the S/Zn ratio, while its intensity decreases after modification of the ZnS:Mn nanoparticles by AA. Signal II is, therefore, attributed to the Mn2+ ions near the surface.

Original languageEnglish
Pages (from-to)6444-6445
Number of pages2
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume56
Issue number11
Publication statusPublished - 1997 Sep 15

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Electronic states
acrylic acid
Powders
Acrylics
Paramagnetic resonance
electron paramagnetic resonance
Ions
Acids
electronics
Photoluminescence
Spectroscopy
Nanoparticles
ions
photoluminescence
nanoparticles
spectroscopy

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

EPR study of Mn2+ electronic states for the nanosized ZnS : Mn powder modified by acrylic acid. / Igarashi, T.; Isobe, Tetsuhiko; Senna, M.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 56, No. 11, 15.09.1997, p. 6444-6445.

Research output: Contribution to journalArticle

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