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Title: Complex intermetallic phase in multicrystalline silicon doped withtransition metals

Abstract

We report the observation of an alloy phase with fluorite-type structure containing Ni, Fe, Cu, and Si, found as precipitates in multi-crystalline silicon. The analysis of extended x-ray absorption fine-structure microspectroscopy ({micro}-EXAFS) measurements on the K edges of the transition metals of the precipitates and a synthetic reference material with composition of Ni{sub 0.82}Fe{sub 0.21}Cu{sub 0.02}Si{sub 1.94} support a structure model similar to NiSi{sub 2} but with mixed occupancies of Fe on the Ni site and Cu on the Si site. This observation provides evidence that transition metals interact during precipitation within silicon and form complex silicides.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
Sponsoring Org.:
USDOE Director, Office of Science
OSTI Identifier:
919391
Report Number(s):
LBNL-62774
Journal ID: ISSN 0163-1829; PRBMDO; TRN: US200822%%37
DOE Contract Number:
DE-AC02-05CH11231
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review B; Journal Volume: 73; Related Information: Journal Publication Date: 2006
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; SILICON; INCLUSIONS; NICKEL; IRON; COPPER; PHASE STUDIES; NICKEL SILICIDES; PRECIPITATION; advanced light source als

Citation Formats

Heuer, Matthias, Buonassisi, Tonio, Marcus, Matthew A., Istratov,Andrei A., Pickett, Matthew D., Shibata, Tomohiro, and Weber, Eicke R.. Complex intermetallic phase in multicrystalline silicon doped withtransition metals. United States: N. p., 2006. Web. doi:10.1103/PhysRevB.73.235204.
Heuer, Matthias, Buonassisi, Tonio, Marcus, Matthew A., Istratov,Andrei A., Pickett, Matthew D., Shibata, Tomohiro, & Weber, Eicke R.. Complex intermetallic phase in multicrystalline silicon doped withtransition metals. United States. doi:10.1103/PhysRevB.73.235204.
Heuer, Matthias, Buonassisi, Tonio, Marcus, Matthew A., Istratov,Andrei A., Pickett, Matthew D., Shibata, Tomohiro, and Weber, Eicke R.. Sun . "Complex intermetallic phase in multicrystalline silicon doped withtransition metals". United States. doi:10.1103/PhysRevB.73.235204.
@article{osti_919391,
title = {Complex intermetallic phase in multicrystalline silicon doped withtransition metals},
author = {Heuer, Matthias and Buonassisi, Tonio and Marcus, Matthew A. and Istratov,Andrei A. and Pickett, Matthew D. and Shibata, Tomohiro and Weber, Eicke R.},
abstractNote = {We report the observation of an alloy phase with fluorite-type structure containing Ni, Fe, Cu, and Si, found as precipitates in multi-crystalline silicon. The analysis of extended x-ray absorption fine-structure microspectroscopy ({micro}-EXAFS) measurements on the K edges of the transition metals of the precipitates and a synthetic reference material with composition of Ni{sub 0.82}Fe{sub 0.21}Cu{sub 0.02}Si{sub 1.94} support a structure model similar to NiSi{sub 2} but with mixed occupancies of Fe on the Ni site and Cu on the Si site. This observation provides evidence that transition metals interact during precipitation within silicon and form complex silicides.},
doi = {10.1103/PhysRevB.73.235204},
journal = {Physical Review B},
number = ,
volume = 73,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2006},
month = {Sun Jan 01 00:00:00 EST 2006}
}
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