Phase formation and texture of thin nickel germanides on Ge(001) and Ge(111)

De Schutter, B.; Van Stiphout, K.; Santos, N. M.; Bladt, E.; Jordan-Sweet, J.; Bals, S.; Lavoie, C.; Comrie, C. M.; Vantomme, A.; Detavernier, C.

doi:10.1063/1.4945317

Title: Phase formation and texture of thin nickel germanides on Ge(001) and Ge(111)

Journal Article · Tue Apr 05 00:00:00 EDT 2016 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4945317· OSTI ID:1354477

^[1]; Van Stiphout, K. ^[2]; Santos, N. M. ^[2]; Bladt, E. ^[3]; Jordan-Sweet, J. ^[4]; Bals, S. ^[3]; Lavoie, C. ^[4]; Comrie, C. M. ^[5]; Vantomme, A. ^[2]; Detavernier, C. ^[1]

Ghent Univ. (Belgium)
KU Leuven (Belgium)
Univ. of Antwerp (Belgium)
IBM T.J. Watson Research Center, Yorktown Heights, NY (United States)
Univ. of Cape Town, Rondebosch (South Africa); iThemba LABs, Somerset West (South Africa)

We studied the solid-phase reaction between a thin Ni film and a single crystal Ge(001) or Ge(111) substrate during a ramp anneal. The phase formation sequence was determined using in situ X-ray diffraction and in situ Rutherford backscattering spectrometry (RBS), while the nature and the texture of the phases were studied using X-ray pole figures and transmission electron microscopy. The phase sequence is characterized by the formation of a single transient phase before NiGe forms as the final and stable phase. X-ray pole figures were used to unambiguously identify the transient phase as the ϵ-phase, a non-stoichiometric Ni-rich germanide with a hexagonal crystal structure that can exist for Ge concentrations between 34% and 48% and which forms with a different epitaxial texture on both substrate orientations. Here, the complementary information gained from both RBS and X-ray pole figure measurements revealed a simultaneous growth of both the ϵ-phase and NiGe over a small temperature window on both substrate orientations.

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Research Organization:: Brookhaven National Lab. (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); European Research Council (ERC)

Grant/Contract Number:: SC00112704; AC02-98CH10886; #335078-COLOURATOMS; GOA/14/007; GOA 01G01513

OSTI ID:: 1354477

Alternate ID(s):: OSTI ID: 1245504

Report Number(s):: BNL-112994-2016-JA; JAPIAU

Journal Information:: Journal of Applied Physics, Vol. 119, Issue 13; ISSN 0021-8979

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 14 works

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Improving the morphological stability of nickel germanide by tantalum and tungsten additions Jablonka, L.; Kubart, T.; Gustavsson, F. Applied Physics Letters, Vol. 112, Issue 10 https://doi.org/10.1063/1.5019440	journal	March 2018
Impact of Pt on the phase formation sequence, morphology, and electrical properties of Ni(Pt)/Ge _0.9 Sn _0.1 system during solid-state reaction Quintero, A.; Gergaud, P.; Aubin, J. Journal of Applied Physics, Vol. 124, Issue 8 https://doi.org/10.1063/1.5040924	journal	August 2018
Ni/GeSn solid-state reaction monitored by combined X-ray diffraction analyses: focus on the Ni-rich phase Quintero, Andrea; Gergaud, Patrice; Aubin, Joris Journal of Applied Crystallography, Vol. 51, Issue 4 https://doi.org/10.1107/s1600576718008786	journal	July 2018

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Title: Phase formation and texture of thin nickel germanides on Ge(001) and Ge(111)

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