Study of Ge Out-diffusion During Nickel (Platinum ∼ 0, 5, 10 at.%) Germanosilicide Formation

2004 ◽  
Vol 810 ◽  
Author(s):  
L. J. Jin ◽  
K. L. Pey ◽  
W. K. Choi ◽  
E. A. Fitzgerald ◽  
D. A. Antoniadis ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Interfacial Reaction ◽  
Rapid Thermal Annealing ◽  
Annealing Temperature ◽  
Diffraction Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
Micro Raman Spectroscopy ◽  
Higher Temperature ◽  
Nickel Platinum

ABSTRACTThe interfacial reaction between 10 nm Ni(Pt ∼0, 5, 10 at.%) and (100) Si0.75Ge0.25 substrate after rapid thermal annealing between 400 and 800°C has been studied in detail using Micro- Raman spectroscopy. Only monogermanosilicide phase was detected in the temperature range investigated. The evolution of a broad Ni(Pt)SiGe Raman peak into two distinct peaks with increasing annealing temperature is attributed to a Ge out-diffusion from the germanosilicide grains. In addition, Raman spectroscopy further proves that depletion of Ge concentration in the Ni(Pt)SiGe grains reduces at higher temperature by the addition of Pt. The above phenomena were further supported by X-ray diffraction method.

scholarly journals Влияние Cr и Ni на формирование фаз в механосинтезированном нанокомпозите на основе Fe-=SUB=-75-=/SUB=-C-=SUB=-25-=/SUB=-

2020 ◽  
Vol 90 (5) ◽  
pp. 787
Author(s):  
А.А. Чулкина ◽  
А.И. Ульянов ◽  
В.А. Волков ◽  
А.Л. Ульянов ◽  
А.В. Загайнов
Keyword(s):  
Curie Temperature ◽  
Amorphous Phase ◽  
Annealing Temperature ◽  
Magnetic Measurements ◽  
Nickel Content ◽  
X Ray Diffraction ◽  
Mechanical Synthesis ◽  
X Ray ◽  
Higher Temperature ◽  
Two Phases

X-ray diffraction, Mossbauer spectroscopy, and magnetic measurements have been used to study the phase formation and doping during mechanical synthesis (MS) and subsequent annealing of the alloy (Fe0.80Cr0.05Ni0.15)75C25. It has been shown that, after MS, the nanocomposite contains mainly two phases – an amorphous phase and cementite A. During annealing, as a result of crystallization of the amorphous phase, cementite B is formed, in which contains more nickel than in the mechanically synthesized cementite A. As the annealing temperature increases, austenite, which is inhomogeneous in nickel content, is formed. The Curie temperature of this austenite reaches 500 °C. It has been determined that cementite in the mechanosynthesized nanocomposite (Fe,Cr,Ni)75C25 has a higher temperature stabilitythan that in a MS composite (Fe,Ni)75C25.

Combined synchrotron x-ray diffraction and micro-Raman for following in situ the growth of solution-deposited YBa2Cu3O7 thin films

2005 ◽  
Vol 20 (12) ◽  
pp. 3270-3273 ◽  
Author(s):  
F. Berberich ◽  
H. Graafsma ◽  
B. Rousseau ◽  
A. Canizares ◽  
R. Ramy Ratiarison ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
X Ray Diffraction ◽  
X Ray ◽  
Additional Information ◽  
Micro Raman Spectroscopy ◽  
High Temperature Process ◽  
Structural Growth ◽  
Metal Organic ◽  
Insight Into

A unique combination of in situ synchrotron x-ray diffraction and in situ micro-Raman spectroscopy was used to study the growth process of YBa2Cu3O6+x films obtained by metal organic decomposition using trifluoroacetate precursor on LaAlO3 substrates. The techniques give complementary information: x-ray diffraction gives insight into the structural growth, whereas micro-Raman spectroscopy gives information of the chemical composition with additional information on the texture. To perform both experiments in situ, a special high-temperature process chamber was designed.

Blue halite colour centre aggregates studied by micro-Raman spectroscopy and X-ray diffraction

2012 ◽  
Vol 60 ◽  
pp. 124-128 ◽  
Author(s):  
Aleksandra Wesełucha-Birczyńska ◽  
Sylwia Zelek ◽  
Katarzyna Stadnicka
Keyword(s):  
Raman Spectroscopy ◽  
X Ray Diffraction ◽  
Colour Centre ◽  
X Ray ◽  
Micro Raman Spectroscopy

scholarly journals Mineral characterization of soil type ranker formed on serpentines occurring in southern Belgrade environs Bubanj Potok

2012 ◽  
Vol 27 (2) ◽  
pp. 131-136
Author(s):  
Bozidar Cekic ◽  
Valentin Ivanovski ◽  
Aleksandar Djordjevic ◽  
Velimir Aleksic ◽  
Zorica Tomic ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Raman Spectroscopy ◽  
Soil Type ◽  
X Ray Diffraction ◽  
X Ray ◽  
Micro Raman Spectroscopy ◽  
Detrital Mineral ◽  
Scanning Electron

The paper addresses the issue of health risk associated with the presence of chrysotile in the soil type ranker formed on massive serpentines occurring in the area of Bubanj Potok, a settlement located in the southern Belgrade environs, Serbia. Characterization of the ranker soil was conducted by scanning electron microscopy, X-ray diffraction, micro-Raman spectroscopy and transmission 57Fe M?ssbauer spectroscopy. Scanning electron microscopy figures showed regular shaped smectite (montmorillonite) particles, aggregates of chlorite, and elongated sheets of serpentines minerals antigorite. X-ray diffraction analysis confirmed the presence of detrital mineral quartz polymorph as well as minor amounts of other mineral species. Micro-Raman spectroscopy identified the presence of dominant minerals, such as montmorillonite, kaolinite, muscovite, gypsum, calcite, albite, amphiboles (hornblende/kaersutite) and orthoclase. Important polymorph silica modifications of quartz, olivine (forsterite), pyroxene (enstatite/ferrosilite, diopside/hedenbergite), and serpentine (antigorite/lizardite/chrysotile) were identified.

scholarly journals A study of nickel and cobalt silicides formed in the Ni/Co/Si(1 0 0) system by thermal annealing

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
C. Sedrati ◽  
A. Bouabellou ◽  
A. Kabir ◽  
R. Haddad ◽  
M. Boudissa ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Sheet Resistance ◽  
Annealing Temperature ◽  
X Ray Diffraction ◽  
Temperature Dependent ◽  
X Ray ◽  
Force Microscopy ◽  
Atomic Force ◽  
Sheet Resistance Measurement ◽  
Cobalt Silicides

AbstractIn this work, the Ni/Co/Si system was annealed at temperatures ranging from 300 °C to 800 °C. The samples were characterized by means of X-ray diffraction (XRD), Raman spectroscopy, Rutherford backscattering spectroscopy (RBS), atomic force microscopy (AFM) and sheet resistance measurement. The XRD and Raman spectroscopy results showed that the formation of nickel and cobalt silicides (CoSi, Co2Si, Ni2Si, NiSi, NiSi2, CoSi2) is an annealing temperature dependent diffusion process. The diffusion phenomenon was evidenced by RBS. The low values of the sheet resistance which were correlated with the films surface roughness were attributed to the formation of both CoSi and NiSi phases.

Micro-Raman spectroscopy and X-ray diffraction studies of atomic-layer-deposited ZrO2 and HfO2 thin films

2005 ◽  
Vol 40 (16) ◽  
pp. 4293-4298 ◽  
Author(s):  
S. N. Tkachev ◽  
M. H. Manghnani ◽  
A. Niilisk ◽  
J. Aarik ◽  
H. Mändar
Keyword(s):  
Thin Films ◽  
Raman Spectroscopy ◽  
Atomic Layer ◽  
X Ray Diffraction ◽  
X Ray ◽  
Micro Raman Spectroscopy
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