Abstract
In order to elucidate the effect of synchrotron radiation (SR) irradiation on crystal growth, crystallization of WO3 films has been performed in vacuum under SR irradiation. The main results were compared with the results of heat treatment of the same film. Upon SR irradiation for 80 s using a toroidal mirror, a catastrophic change occurred, i.e. W3O crystals (A-15 type) with a size of less than 30 nm appeared. Decomposition of the WO3 film started at above 750 °C during vacuum heating. W, WO2 and incommensurate WO3 crystals appeared. W3O crystal produced neither intense electron beam irradiation nor vacuum heating. These results will be discussed in terms of the differences caused by excitation with a SR beam, i.e. strong inner shell excitation and ionization of W and O may have taken place.
| Original language | English |
|---|---|
| Pages (from-to) | 187-192 |
| Number of pages | 6 |
| Journal | Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms |
| Volume | 194 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Aug 2002 |
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Keywords
- Amorphous thin film
- Crystallization
- Electron microscopy
- Irradiation
- Tungsten oxide
ASJC Scopus subject areas
- Surfaces, Coatings and Films
- Instrumentation
- Surfaces and Interfaces
Cite this
Irradiation effect of synchrotron radiation on crystallization of thin amorphous WO3 film. / Kimura, Yuki; Hanamoto, Katsumi; Nakayama, Yasuyuki; Kaito, Chihiro.
In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Vol. 194, No. 2, 08.2002, p. 187-192.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Irradiation effect of synchrotron radiation on crystallization of thin amorphous WO3 film
AU - Kimura, Yuki
AU - Hanamoto, Katsumi
AU - Nakayama, Yasuyuki
AU - Kaito, Chihiro
PY - 2002/8
Y1 - 2002/8
N2 - In order to elucidate the effect of synchrotron radiation (SR) irradiation on crystal growth, crystallization of WO3 films has been performed in vacuum under SR irradiation. The main results were compared with the results of heat treatment of the same film. Upon SR irradiation for 80 s using a toroidal mirror, a catastrophic change occurred, i.e. W3O crystals (A-15 type) with a size of less than 30 nm appeared. Decomposition of the WO3 film started at above 750 °C during vacuum heating. W, WO2 and incommensurate WO3 crystals appeared. W3O crystal produced neither intense electron beam irradiation nor vacuum heating. These results will be discussed in terms of the differences caused by excitation with a SR beam, i.e. strong inner shell excitation and ionization of W and O may have taken place.
AB - In order to elucidate the effect of synchrotron radiation (SR) irradiation on crystal growth, crystallization of WO3 films has been performed in vacuum under SR irradiation. The main results were compared with the results of heat treatment of the same film. Upon SR irradiation for 80 s using a toroidal mirror, a catastrophic change occurred, i.e. W3O crystals (A-15 type) with a size of less than 30 nm appeared. Decomposition of the WO3 film started at above 750 °C during vacuum heating. W, WO2 and incommensurate WO3 crystals appeared. W3O crystal produced neither intense electron beam irradiation nor vacuum heating. These results will be discussed in terms of the differences caused by excitation with a SR beam, i.e. strong inner shell excitation and ionization of W and O may have taken place.
KW - Amorphous thin film
KW - Crystallization
KW - Electron microscopy
KW - Irradiation
KW - Tungsten oxide
UR - http://www.scopus.com/inward/record.url?scp=0036679670&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0036679670&partnerID=8YFLogxK
U2 - 10.1016/S0168-583X(02)00685-7
DO - 10.1016/S0168-583X(02)00685-7
M3 - Article
AN - SCOPUS:0036679670
VL - 194
SP - 187
EP - 192
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
SN - 0168-583X
IS - 2
ER -