Palladium-hydrogen complex in silicon observed by electron spin resonance measurement

Takeshi Ishiyama, Shutaro Kimura, Yuya Mori, Yoichi Kamiura, Yoshifumi Yamashita

Research output: Contribution to journalArticle

Abstract

We have investigated a palladium-hydrogen complex in silicon by electron spin resonance (ESR) measurement. A new ESR spectrum was detected in a sample diffused with palladium and hydrogen. The hyperfine structure of hydrogen atoms in the ESR spectrum shows that the spectrum originates from a palladium-hydrogen complex containing three hydrogen atoms (Pd-H3). The anisotropic g-value of Pd-H3 shows that the Pd-H3 complex has an anisotropic character of orthorhombic (C2v) symmetry. The calculated g-values of the Pd-H3 complex are g1 = 2:12, g2 = 2:10, and g3 = 2:03, and the g2 axis is along the (100) direction. The anisotropic character of orthorhombic (C2v ) symmetry results from a configuration consisting of one Pd atom at a substitutional site, two equivalent hydrogen atoms at interstitial sites along the (111) direction, and one hydrogen atom at the next-nearest-neighbor interstitial site along the h100i-twofold symmetry axis. We have also studied the dissociation of a platinum-hydrogen complex by thermal treatment. The activation energy for the dissociation of the Pd-H3 complex is estimated to be about 1.6 eV.

Original languageEnglish
Article number091301
JournalJapanese Journal of Applied Physics
Volume50
Issue number9 PART 1
DOIs
Publication statusPublished - Sep 2011

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Palladium
Paramagnetic resonance
palladium
hydrogen atoms
electron paramagnetic resonance
Silicon
Hydrogen
silicon
hydrogen
interstitials
symmetry
Atoms
dissociation
hyperfine structure
platinum
activation energy
configurations
atoms
Platinum
Activation energy

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Palladium-hydrogen complex in silicon observed by electron spin resonance measurement. / Ishiyama, Takeshi; Kimura, Shutaro; Mori, Yuya; Kamiura, Yoichi; Yamashita, Yoshifumi.

In: Japanese Journal of Applied Physics, Vol. 50, No. 9 PART 1, 091301, 09.2011.

Research output: Contribution to journalArticle

Ishiyama, Takeshi ; Kimura, Shutaro ; Mori, Yuya ; Kamiura, Yoichi ; Yamashita, Yoshifumi. / Palladium-hydrogen complex in silicon observed by electron spin resonance measurement. In: Japanese Journal of Applied Physics. 2011 ; Vol. 50, No. 9 PART 1.
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