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Article
What Xe Nanocrystals in Al Can Teach us in Materials Science
Noble gases are generally very insoluble in solids. For example, Xe implanted into Al at 300 K forms a fine dispersion of crystalline precipitates and, at large enough fluence, fluid precipitates, both of whic...
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Article
Electron-diffraction study on ∈-iron nitride powders with various nitrogen contents: Variation of long-range nitrogen ordering
Homogeneous ∈-iron nitride powder particles of the compositions Fe3N1.00, Fe3N1.22, Fe3N1.30, and Fe3N1.39 were investigated using selected-area electron diffraction. The superstructure reflections, due to N orde...
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Article
Fabrication of nanostructures with different iron concentration by electron beam induced deposition with a mixture gas of iron carbonyl and ferrocene, and their magnetic properties
Electron beam induced deposition (EBID) with a mixture gas of iron carbonyl and ferrocene was carried out to fabricate nanostructures with different iron concentrations in a chamber of a scanning electron micr...
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Article
Fabrication of a nano-magnet on a piezo-driven tip in a TEM sample holder
A nanometer-sized magnet (nano-magnet) was fabricated on the tip of a tungsten needle by electron-beam-induced deposition with Fe(CO)5 gas. The needle tip, which can be moved with a step** motor and piezo-drive...
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Article
Electron beam-induced formation of nanosized α-Fe crystals
Focused electron beam induced chemical vapor deposition was performed in a scanning electron microscope with a field emission gun using a precursor of iron carbonyl. Due to the longer deposition time and highe...
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Article
Transmission electron microscopy study on the superstructure and the precipitation of γ′-Fe4N in initially homogeneous ɛ-iron nitride powders
Annealed and quenched ɛ-Fe2-3N powders with an initially homogeneous composition of Fe3N1.0 were studied by transmission electron microscopy (TEM). TEM specimens were successfully prepared from the powder using a...
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Article
Formation of iron silicide nano-islands on Si substrates by metal organic chemical vapor deposition under electron beams
Electron-beam induced chemical vapor deposition (EBI-CVD) of Fe(CO)5 was performed on both Si (111) and (110) substrates at 673–873 K inside an ultrahigh vacuum transmission electron microscope. The formation of ...
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Article
TEM study of Mg-Zn precipitates in Mg-Zn-Y alloys
The precipitates in Mg-Zn-Y alloys in the as-cast state with nominal atomic composition of Mg96Zn1Y3, Mg96Zn2Y2 and Mg97Zn1Y2 were studied by means of TEM as well as XRD techniques. The results show that there is...
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Article
Transmission electron microscopy investigation on the electron-stimulated oxidation of iron nitrides by 2-MeV electron irradiation
An iron nitride sample was irradiated by 2-MeV electrons intermittently for 2100 s with a dose rate of 6.3 × 1024 e.m.−2 s−1 inside a 3-MV high-voltage transmission electron microscope. The electron-stimulated ox...
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Article
In situ transmission electron microscopy investigation of radiation effects
In situ observation is of great value in the study of radiation damage utilizing electron or ion irradiation. We summarize the facilities and give examples of work found around the world. In situ observations ...
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Chapter and Conference Paper
Electron beam induced deposition of position and size controlled structures on the nanometre scale
Electron beam induced deposition (EBID) was carried out with gas introduction systems attached to field emission scanning and transmission electron microscopes (FE-SEM and FE-TEM). Using tungsten and iron carb...
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Article
Transmission Electron Microscopy and High-Resolution Transmission Electron Microscopy Study of Nanostructure and Metastable Phase Evolution in Pulsed-Laser-Ablation–Deposited Ti–Si Thin Film
Thin films with a nominal composition close to Ti62.5Si37.5 were deposited on NaCl substrate at room temperature by pulsed laser ablation to study the evolution of the intermetallic compound Ti5Si3 using a combin...
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Article
Microstructural Changes to Xenon Naonoclusters in Aluminum under 1 MeV Electron Irradiation
Aluminum films containing solid Xe precipitates have been subjected to 1 MeV electron irradiation in a high-voltage electron microscope. High-resolution images have been recorded on videotape in order to monit...
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Article
Synthesis of large-size β–Si3N4 crystals
Large-sized β–Si3N4 crystals up to 10 mm in length and 0.3 mm in diameter with low impurity concentration are successfully grown from silicon melt in a nitrogen atmosphere. By controlling the concentration of imp...
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Article
In-situ observation of atomic processes in Xe nanocrystals embedded in al
Self-organization processes in Xe nanocrystals embedded in Al are observed with in-situ high-resolution electron microscopy. Under electron irradiation, stacking fault type defects are produced in Xe nanocryst...
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Article
NdBCO melting and solidification by a zone-melting method
In the Nd-Ba-Cu-O system, a directional structure produced by a peritectic reaction has been observed. On heating, the sintered Nd1Ba2Cu3O6+δ (Ndl23) precursor formed a rod-like directional structure of Nd4Ba2Cu2
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Article
Crystal orientation and growth anisotropy of YBa2Cu3O6+x fabricated by directional solidification method
The unidirectional solidification by a zone-melting method was performed to investigate the growth anisotropy of YBa2Cu3O6+x (123) superconductive oxides. Large faceted interfaces were obtained at growth rates lo...