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Tetsu Tatsuma
Session ID: 2I02
Published: 2004
Released on J-STAGE: September 01, 2006
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Kiyoshi Miyashita, Naoya Yamaguchi, tsutomu Ubukata
Session ID: 2I03
Published: 2004
Released on J-STAGE: September 01, 2006
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Yoshiaki Sone, Atsuo Yasumori
Session ID: 2I04
Published: 2004
Released on J-STAGE: September 01, 2006
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Carbonaceous materials such as polyamide and DLC are applying to fabrication of various functional thin films; however, their processing is difficult because of their surface hardness and chemically inactiveness. On the other hand, titania is well known to decompose organic substances by photocatalytic reaction, because it can generate some oxygen radicals under UV light irradiation. We have reported that a porous titania, which was prepared by phase separation-selective leaching method, has high photocatalytic activity. In this study, a porous titania wire which was made by using a same method was applied in order to process the surface of carbonaceous thin films in nanometer scale.
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Yasuyuki Takata
Session ID: 2I05
Published: 2004
Released on J-STAGE: September 01, 2006
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Ken-ichi Katsumata, Hidemi Yoshikawa, Tadashi Shiota, Yoshikazu Kamesh ...
Session ID: 2I06
Published: 2004
Released on J-STAGE: September 01, 2006
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Toshiya Watanabe, Naoya Yoshida, Masato Wakamura, Hisaki Ohsaki
Session ID: 2I07
Published: 2004
Released on J-STAGE: September 01, 2006
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JUN TANAKA
Session ID: 2I08
Published: 2004
Released on J-STAGE: September 01, 2006
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Koichi Konishi, Masato Tamai, Atsushi Nakahira
Session ID: 2I09
Published: 2004
Released on J-STAGE: September 01, 2006
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Youko Takezawa, Hiroaki Imai
Session ID: 2I10
Published: 2004
Released on J-STAGE: September 01, 2006
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Atsunori Matsuda, Toshihiro Kogure, Hiroyuki Muto, Mototsugu Sakai, Ki ...
Session ID: 2I11
Published: 2004
Released on J-STAGE: September 01, 2006
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Masato Kakihana, Koji Tomita, Valery Petrykin
Session ID: 2I12
Published: 2004
Released on J-STAGE: September 01, 2006
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Miki Suzuki, Takashi Kojima, Naofumi Uekawa, Kazuyuki Kakegawa
Session ID: 2I13
Published: 2004
Released on J-STAGE: September 01, 2006
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Kenji Toda, Ken-ichi Shimizu, Masato Kawakami, Kazuyoshi Uematsu, Mine ...
Session ID: 2I14
Published: 2004
Released on J-STAGE: September 01, 2006
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Taki Matsumoto, Nobuo Iyi, Yoshiro Kaneko, Yoshio Takasu, Yasushi Mura ...
Session ID: 2I15
Published: 2004
Released on J-STAGE: September 01, 2006
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Chia-Wen Wu, Makoto Kuwabara
Session ID: 2P06
Published: 2004
Released on J-STAGE: September 01, 2006
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Well-organized cubic mesoporous TiO2 thin films (CMTTFs) with an anatase nanocrystalline framework were synthesized by a surfactant-templated method. A controlled aging environment of -20 ˚C allowed the formation of a bicontinuous cubic mesostructure with the largest d(111) spacing of 98 Å in the TiO2 films. An appropriate calcination temperature of 400 ˚C resulted in the removal of the template and the crystallization of the framework without destroying the mesostructural ordering. The obtained mesostructured (before calcination) and mesoporous (after calcination) TiO2 thin films were characterized by small angle-XRD, FE-SEM, TEM, TG-DTA, and FT-IR spectroscopy. The photovoltaic properties of the obtained CMTTF were characterized by fabricating a ITO/MEH-PPV/CMTTF/Au photovoltaic cell and measuring the photocurrent-voltage curves.
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Hiroaki Bessho, Junko Fujimoto, Youichi Mochizuki, Eriko Shimada, Yasu ...
Session ID: 2P07
Published: 2004
Released on J-STAGE: September 01, 2006
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jun akedo
Session ID: 1J01
Published: 2004
Released on J-STAGE: September 01, 2006
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The α-Al2O3 layer with nana crystal structure were successfully formed by Aerosol Deposition.In this presentation, the principle of Aerosol deposition especially focused on the deposition mechanism, and its application will be introduced.
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Masafumi Nakada, Keishi Ohashi, Jun Akedo
Session ID: 1J02
Published: 2004
Released on J-STAGE: September 01, 2006
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TOMOKAZU ITO, HIRONORI HATONO, MASAKATSU KIYOHARA, MAXIM LEBEDEV, JUN ...
Session ID: 1J03
Published: 2004
Released on J-STAGE: September 01, 2006
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Yoshihiro Kawakami, Syuuji Aizawa, Jun Akedo
Session ID: 1J04
Published: 2004
Released on J-STAGE: September 01, 2006
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Maxim Lebedev, Jun Akedo
Session ID: 1J05
Published: 2004
Released on J-STAGE: September 01, 2006
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The surface roughness (SR) is a very important characteristic ofdeposited ceramics film especially for real application. Low value of SRcan reduce consumption of material and decrease or even skip thepost-processing polishing of the surface, thus decrease the productioncost. Aerosol Deposition Method (ADM) [1] can fabricate thick, dense andhard ceramics film on various kinds of materials substrates witch havevariety in shape. Principle of ADM is based on impact of small ceramicsparticle with substrate and films themselves. In this paper the factorresponsible for SR are reported. Previously [2] it was shown that balance of deposition and ablationprocesses which are existed in ADM determinates the film formation. ADMis based on fracture of particle during impaction. We connect SR withthe mechanical properties of ceramics particle which are destroyedduring impaction. In this work we experimentally found the tendency ofSR dependence: 1) SR increases with the film thickness increasing; 2) SR increases with increasing the velocity of impacted particles; 3) SR decreasing for oblique impaction of particles: 4) hard material deposited by ADM has low SR than that of more softmaterial; For PZT films as deposited on glass substrate, the value of SR (Ra) was0.026 micrometers for film under 1 micron and from 0.05 to 0.1micrometers for films in the range of from 10 to 100 micron.Work supported by the NEDO Project "Nano Structure Forming for AdvancedCeramic Integration Technology in Japan Nanotechnology Program."[1] J. Akedo, M. Lebedev., Materia Japan 41 (2002) 459; [2] M. Lebedev,J. Akedo, Ferroelectrics 270 (2002) 117
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Takashi Iijima, Sachiko Ito, Hirofumi Matsuda
Session ID: 1J06
Published: 2004
Released on J-STAGE: September 01, 2006
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Satoshi Wada, Takuya Hoshina, Hiroaki Yasuno, Song-Min Nam, Hirofumi K ...
Session ID: 1J07
Published: 2004
Released on J-STAGE: September 01, 2006
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Hirotake Okino, Takashi Yamamoto
Session ID: 1J08
Published: 2004
Released on J-STAGE: September 01, 2006
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Sakyo Hirose, Koichi Nishita, Akinori Nakayama, Hideaki Niimi, Hiroshi ...
Session ID: 1J09
Published: 2004
Released on J-STAGE: September 01, 2006
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Yuji Noguchi, Masatake Takahashi, Masaru Miyayama
Session ID: 1J10
Published: 2004
Released on J-STAGE: September 01, 2006
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Ferroelectric memories have attracted much attention because of the invaluable advantage of nonvolatile and high-speed read-write functions. In this study, oxygen vacancies in ferroelectric PbTiO3 and SrBi2Ta2O9(SBT) were analyzed by first-principles electronic band-structure calculations, and the effects on the polarization properties were investigated. PbTiO3 has two kinds of oxide ions whose vacancy formation energy is different, which is likely the origin of polarization fatigue and imprint behavior of Pb(Zr,Ti)O3 based capacitor. In contrast, Bi2O2 layers of SBT act as absorption layers of oxide ions, leading to a high fatigue endurance of SBT capacitor.
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Minoru Osada, Masato Kakihana, Yuji Noguchi, Masaru Miyayama
Session ID: 1J11
Published: 2004
Released on J-STAGE: September 01, 2006
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Masanori Okuyama
Session ID: 1J12
Published: 2004
Released on J-STAGE: September 01, 2006
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Ferroelectric Random Access memory, FeRAM shows good features such as nonvolatility, high speed, low power and high density. Its small-sacle devices are commercially available, and Its large-scale devices are sincerely expected. Recently, new developments such as new structure device, remarkable ferroelectric property in the films with substituted elements and new composition and new principle are in progress. These new developments are reviewed in this presentation.
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Yuji Takatsuka, Tokuyuki Nakayama, Shoji Takanashi
Session ID: 1J13
Published: 2004
Released on J-STAGE: September 01, 2006
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Hiroshi Funakubo, Takayuki Watanabe, Shintaro Yokoyama, Kenji Takahash ...
Session ID: 1J14
Published: 2004
Released on J-STAGE: September 01, 2006
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Yoshiki Ueda, Atsushi Sakurai, Keisuke Kageyama, Akira Ando, Yukio Sak ...
Session ID: 1J15
Published: 2004
Released on J-STAGE: September 01, 2006
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Kazumi Kato, Kazuyuki Suzuki, Kiyotaka Tanaka, Tatsuo Kimura, Kaori Ni ...
Session ID: 1J16
Published: 2004
Released on J-STAGE: September 01, 2006
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Masakazu Mori, Jun Akedo
Session ID: 1P01
Published: 2004
Released on J-STAGE: September 01, 2006
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So Baba, Jun Akedo
Session ID: 1P02
Published: 2004
Released on J-STAGE: September 01, 2006
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Song-Min NAM, Hirofumi KAKEMOTO, Satoshi WADA, Jun AKEDO, Takaaki TSUR ...
Session ID: 1P03
Published: 2004
Released on J-STAGE: September 01, 2006
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Atsushi Iwata, Jun Akedo
Session ID: 1P04
Published: 2004
Released on J-STAGE: September 01, 2006
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Akiko Saito, Hirohumi Kakemoto, Satoshi Wada, Takaaki Tsurumi
Session ID: 1P05
Published: 2004
Released on J-STAGE: September 01, 2006
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Shintaro Yokoyama, Yoshihisa Honda, Hitoshi Morioka, Shoji Okamoto, Ak ...
Session ID: 1P06
Published: 2004
Released on J-STAGE: September 01, 2006
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Kiyotaka Tanaka, Kazuyuki Suzuki, Tatsuo Kimura, Kaori Nishizawa, Take ...
Session ID: 1P07
Published: 2004
Released on J-STAGE: September 01, 2006
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Shoji Okamoto, Shintaro Yokoyama, Yoshihisa Honda, Gouji Asano, Hirosh ...
Session ID: 1P08
Published: 2004
Released on J-STAGE: September 01, 2006
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Akihiro Sumi, Hitoshi Morioka, Yoshihisa Honda, Shintaro Yokoyama, Sho ...
Session ID: 1P09
Published: 2004
Released on J-STAGE: September 01, 2006
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Kazuyuki Suzuki, Kiyotaka Tanaka, Tatsuo Kimura, Kaori Nishizawa, Take ...
Session ID: 1P10
Published: 2004
Released on J-STAGE: September 01, 2006
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Tomo Kobayashi, Yuji Noguchi, Masaru Miyayama
Session ID: 1P11
Published: 2004
Released on J-STAGE: September 01, 2006
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Bismuth layer-structured ferroelectrics (BLSFs) are the attractive ferroelectric and/or piezoelectric materials because of their fatigue-free nature and lead-free composition. The intergrowth BLSFs with alternate stacking of two kinds of BLSFs are also promising materials. In this study, intergrowth BLSF single crystals containing Bi
4Ti
3O
12 (BiT) and BaBi
4Ti
4O
15 (BBTi) were grown and investigated for their crystal structure and polarization properties. X-ray diffraction analysis and transmission electron microscopy indicated the existence of intergrowth structure with a large amount of stacking faults along the
c-axis. Polarization measurements of BiT-BBTi crystals along the
a(
b) axis showed that the spontaneous polarization (
Ps) and coercive field (
Ec) were 52
uC/cm
2 and 120kV/cm, respectively.
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Atsushi Nagai, Gouji Asano, Young Soo Park, Sang Min Shin, Suk Pil ...
Session ID: 1P12
Published: 2004
Released on J-STAGE: September 01, 2006
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Hirofumi Kakemoto, Satoshi Wada, Takaaki Tsurumi
Session ID: 1P13
Published: 2004
Released on J-STAGE: September 01, 2006
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Microwave reflection signal for SrTiO
3 and Al
2O
3 single crystal substrates was examined to measure at room temperature using a single probe as a function of distance between specimen and probe. The difference of reflection signal of around 9GHz for SrTiO
3 and Al
2O
3 single crystal substrate was shown to lower region than the distance of 0.6 mm between specimen and probe, and it was caused from dielectric constant of specimens.
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Takanori Ishikawa, Ken-iti Kakimoto, Hitoshi Ohsato
Session ID: 1P14
Published: 2004
Released on J-STAGE: September 01, 2006
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BaTiO_3 solid solutions containing rare-earth elements used for capacitors with multi-layer structure were prepared and their crystal structure was examined in order to determine preferential solubility site of rare-earth ions in perovskite structures. Since the ionic radius of Eu is in intermediate range between those of Ba and Ti, both Ba and Ti-site replacements can be considered in this study. The occupational site of Eu affected the lattice parameters. Transition mode of Eu incorporation between Ba and Ti-sites was discussed.
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Hoshina Takuya, Hirofumi Kakemoto, Takaaki Tsurumi, Satoshi Wada, Masa ...
Session ID: 1P15
Published: 2004
Released on J-STAGE: September 01, 2006
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Takashi Sekine, Takuya Hoshina, Son-Min Nam, Hiroaki Yasuno, Hirofumi ...
Session ID: 1P16
Published: 2004
Released on J-STAGE: September 01, 2006
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In recent years, miniaturization of electronic elements has been required for the high performance and downsizing of the electronic devices. For this demands, multilayer ceramic capacitors (MLCCs) and polymer composites have been intensively researched. In these technologies, the size of the starting material powder also needs to be smaller. However, the size effect appears as the particle size becomes smaller down to 100 nm orders. Additionally, it has been lack of the information to distinguish the characterization of BaTiO3 in the powder state. In this study, the dielectric permittivity of BaTiO3 powders with various conditions was measured in the slurry to investigate the factors affecting their dielectric permittivity.
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Takashi Goto, Masayuki Soga, Masatake Takahashi, Yuji Noguchi, Masaru ...
Session ID: 1P17
Published: 2004
Released on J-STAGE: September 01, 2006
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Hirotaka Ogawa, Hidekazu Taketani, Akinori Kan
Session ID: 1P18
Published: 2004
Released on J-STAGE: September 01, 2006
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