result 1461 件
| JaLCDOI | 10.18926/ESR/13894 |
|---|---|
| Title Alternative | Native gold from Mikawa mine, Niigata Prefecture, Japan |
| FullText URL | ESR_7_19.pdf |
| Author | Yamakawa, Junji| Tanabe, Mitsuo| Shimada, Kazumasa| Henmi, Chiyoko| |
| Abstract | Native gold was found at Mikawa mine, Niigata Prefecture, Japan. The mineral was associated with quartz in a druse within quartz-vein in propyrite. The crystals were formed in filiform, reticulated and dendritic shapes with about 1 mm length with 0.1 mm width and 0.05 mm thickness. Very malleable and ductile, opaque and yellow with metallic luster. Qualitative and semi-quantiative analyses were performed by the wavelength dispersive EPMA. Quantitatively, the crystals contained Au, Ag and Hg. Semi-quantitative analyses were executed with ZAF correction algorithm. The results showed that these specimens had a average chemical composition Au0.77 Ag0.11Hg0.12. This specimen was archived at our site with a collection number ESO-M01001. |
| Keywords | Native Gold Mikawa Mine electrum ESO-M01001 |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2000-09-20 |
| Volume | volume7 |
| Issue | issue1 |
| Start Page | 19 |
| End Page | 20 |
| ISSN | 1340-7414 |
| language | Japanese |
| Copyright Holders | 岡山大学地球科学研究報告編集委員会 |
| File Version | publisher |
| NAID | 120002310280 |
| JaLCDOI | 10.18926/ESR/13891 |
|---|---|
| Title Alternative | Automated observation of sea surface eddy flux on a cruising ship |
| FullText URL | ESR_7_1.pdf |
| Author | Takahashi, Satoshi| Tsukamoto, Osamu| Ishida, Hiroshi| Yoneyama, Kunio| |
| Abstract | Sea surface eddy fluxes were evaluated with the eddy correlation method including ship motion correction for the wind vector components. Previous ship motion correction algorithm was revised as a simple scheme setting a motion sensor at the same place with the sonic anemometer. This revised eddy flux system was mounted as a routine continuous measurement system on the R/V 'Mirai' of Japan Marine Science and Technology Center. The first cruise was conducted at the tropical weatern Pacific in June 2000. Continuous sea surface fluxes were obtained and the data quality was checked with some parameters. This system is planned to be developed as a automated data processing system including ship motion correction and real-time flux evaluation system. These eddy fluxes can be integrated with the bulk fluxes and radiation fluxes to understand sea surface heat balance over the global ocean. |
| Keywords | Sea surface fliux Automated observation Eddy correlation method |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2000-09-20 |
| Volume | volume7 |
| Issue | issue1 |
| Start Page | 1 |
| End Page | 14 |
| ISSN | 1340-7414 |
| language | Japanese |
| Copyright Holders | 岡山大学地球科学研究報告編集委員会 |
| File Version | publisher |
| NAID | 120002310644 |
| Author | Yamamoto, Takako| Akhmad, Sabarudin| Noguchi, Osamu| Takayanagi, Toshio| Oshima, Mitsuko| Motomizu, Shoji| |
|---|---|
| Published Date | 2006-11-17 |
| Publication Title | 分析化学 |
| Volume | volume55 |
| Issue | issue9 |
| Content Type | Journal Article |
| JaLCDOI | 10.18926/ESR/13887 |
|---|---|
| Title Alternative | Trace of the Median Tectonic Line in Mima area, eastern Shikoku |
| FullText URL | ESR_8_1_13.pdf |
| Author | Mizui, Yoshinobu| Tachibana, Toru| Suzuki, shigeyuki| |
| Abstract | Tracing outcrops of shear zone were used to describe the geometry and structure of the Median Tectonic Line in Mima area, eastrn Shikoku. A distinct new fault outcrop was discovered between the Mino and Ikuchi Faults at the northern slope of the Mt. Boso. These two faults are regarded as a single continuous fault. The analysis of surface fabrics of quartz in fault in fault gauge has been carried out to determine relative fault activity events. |
| Keywords | surface fabrics fault gauge Mino-Ikuchi Fault Median Tectonic Line |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2001-09-20 |
| Volume | volume8 |
| Issue | issue1 |
| Start Page | 13 |
| End Page | 28 |
| ISSN | 1340-7414 |
| language | Japanese |
| Copyright Holders | 岡山大学地球科学研究報告編集委員会 |
| File Version | publisher |
| NAID | 120002310656 |
| JaLCDOI | 10.18926/ESR/13885 |
|---|---|
| Title Alternative | Miocene Ukan Formation, Ukan Area, Okayama Prefecture, Southwest Japan |
| FullText URL | ESR_8_1_1.pdf |
| Author | Fujiwara, Takao| Taguchi, Eiji| Suzuki, shigeyuki| |
| Abstract | In this paper, we deal with the Miocene Ukan Formation, sporadically distributed in Ukan-cho, Okayama prefecture, from a viewpoint of analysis of lithology and molluscan assemblages. The Ukan Formation is lithostratigraphically divided into the Suzuoka Conglomerate, Yamagata Muddy Sandstone, Shimoyokomi Sandstone and Conglomerate, Azechi Sandstone and Conglomerate, Tsuneyama Siltstone Members in ascending order. The following 6 molluscan assemblages are recognized. The lower four members and the last member is correlative to the Lower Sandstone and Upper Shale Formation of the Bihoku Group, respectively judging from lithology and fauna. The temporal chages of the above mentioned molluscan assemblages represents that gradual deeping of sea during the depositional period from the Suzuoka Conglomerate and Yamagata Muddy Sandstone Members to the Azechi Sandstone and Conglomerate Member via the Shimoyokomi Sandstone and Conglomerate Member, and abrupt deeping of sea seems to have happened between the Azechi Sandstone and Conglomerate Member and the Tsuneyame Siltstone Member. |
| Keywords | Lithology Molluscan assemblage Paleoenvironmental change Ukan Miocene |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2001-09-20 |
| Volume | volume8 |
| Issue | issue1 |
| Start Page | 1 |
| End Page | 12 |
| ISSN | 1340-7414 |
| language | Japanese |
| Copyright Holders | 岡山大学地球科学研究報告編集委員会 |
| File Version | publisher |
| NAID | 120002310604 |
| Author | Fujiwara, Takao| Suzuki, Shigeyuki| |
|---|---|
| Published Date | 2002-09-20 |
| Publication Title | Okayama University Earth Science Report |
| Volume | volume9 |
| Issue | issue1 |
| Content Type | Departmental Bulletin Paper |
| JaLCDOI | 10.18926/ESR/13880 |
|---|---|
| Title Alternative | Pyrite spots formed along slaty cleavage texture of pelitic rocks of the Tamba Belt, Ujitawara Town, Kyoto Prefecture, Southwest Japan. |
| FullText URL | ESR_9_19.pdf |
| Author | Mikami, Teiji| Musashino, Makoto| Suzuki, shigeyuki| |
| Abstract | Pyrite spots were identified in pelitic rocks from the Ujitawara area, southernmost part of Tamba belt. XMA analysis shows that the spots are composed of pyrite. The spots occur along slaty cleavage plane and form spotted shape of diameter of about 5mm. |
| Keywords | The Tamba Group Ujitawata pelitic rocks pyrite spots slaty cleavage |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2002-09-20 |
| Volume | volume9 |
| Issue | issue1 |
| Start Page | 19 |
| End Page | 24 |
| ISSN | 1340-7414 |
| language | Japanese |
| Copyright Holders | 岡山大学地球科学研究報告編集委員会 |
| File Version | publisher |
| NAID | 120002310485 |
| JaLCDOI | 10.18926/ESR/13875 |
|---|---|
| Title Alternative | Depositional environments of the Katsuta Group, eastern Tsuyama Basin, Southwest Japan |
| FullText URL | earth_science_reports_010_1_23.pdf |
| Author | Yamasaki, Ryo| Suzuki, Shigeyuki| |
| Abstract | The Miocene Katauta Group of the Syohoku-cho area is subdivides into 6 members ; The Uetsuki Conglomerate Member, Nara Sandy Mudstone Member, Tai Gravelly Sandstone Member, Takatori Conglomerate Member, Ayabe Mudstone Member and Maruyama Mutstone Member from bottom to top. The unconformity between Miocene deposits and basement rocks in this area was traced to obtain geometry of the Miocene basin. Contour maps of the bases of the Miocene Yoshino Formation and Takakura Formation indicate paleo-topography. The obtained topography demonstrates a valley, which flowed to north-west, and a few islands and bays. It indicates that these Miocene successuions were deposited in the topography which resemble to the present Seto Inland. |
| Keywords | Katsuta Group Tsuyama Basin Miocene geometry of basin paleoenvironmental chage |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2003-12-20 |
| Volume | volume10 |
| Issue | issue1 |
| Start Page | 23 |
| End Page | 31 |
| ISSN | 1340-7414 |
| language | Japanese |
| Copyright Holders | 岡山大学地球科学研究報告編集委員会 |
| File Version | publisher |
| NAID | 120002310475 |
| JaLCDOI | 10.18926/ESR/13874 |
|---|---|
| Title Alternative | Distributions and ages of the Paleogene deposits in the Kibi Plateau Area, and Paleogene paleogeography |
| FullText URL | earth_science_reports_010_1_15.pdf |
| Author | Tanaka, Hajime| Suzuki, Shigeyuki| Hotani, Shu| Yamamoto, Yasuo| Danhara, Tohru| |
| Abstract | The "Kibi Plateau" forms a unique geomorphic province with the gently-sloping and stable continental feature. Gravel deposites called the "Mountain Gravels", are distributed sporadically in the Kibi Plateau, and have been considered Pliocene deposits. However, recent fission-track ages of the tuff beds intercalated in the deposits have indicated that the ago of deposits are Paleogen in the age. So far, fission-track ages (using zircon) of 61 to 65, 55, 37, 34 to 35 and 27 Ma are obtained. Remaining the belt-like distributions of the Paleogene gravelly valley-full deposits suggest that the Kibe Plateau has been keeping as a stable block, and repeated periods of incision followed by sedimentation of valley-fill deposits are occurred in the area during Paleogene period. |
| Keywords | Kibi Plateau gravelly valley-fill deposites fission-track ages Paleogene palaeogeography |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2003-12-20 |
| Volume | volume10 |
| Issue | issue1 |
| Start Page | 15 |
| End Page | 22 |
| ISSN | 1340-7414 |
| language | Japanese |
| Copyright Holders | 岡山大学地球科学研究報告編集委員会 |
| File Version | publisher |
| NAID | 120002310517 |
| JaLCDOI | 10.18926/ESR/13870 |
|---|---|
| Title Alternative | Paleoenvironmental Analyses of the Buried Peat Deposit during the mid-Holocene at the Desaki Coast in Tamano City, Okayama Prefecture, Weatern Japan |
| FullText URL | earth_science_reports_011_1_39.pdf |
| Author | Matsushita, Mariko| Sato, Hiroshi| Suzuki, Shigeyuki| Yukumoto, Koichi| Momohara, Arata| Ueda, Yayoi| Katoh, Shigehiro| Maeda, Yasuo| |
| Abstract | The buried peat deposit was foud in the sand beach on the Desaki coast (Tamano City, Okayama Prefecture), the northeastern coast of Seto Inland Sea. In this study, we performed sulfur and diatom analyses of the deposit. The results were used along with 14C dates and the eruption age (7300 cal BP) of Kikai-Akahoya tephra (K-Ab) to derive sedimentary environments of the deposit. K-Ah was detected just below the peat deposit. At the culmination of the Jomon transgression, the peat deposit had been formed in brackish environments of salt marsh for about 300 years. In order to reconstruct local paleovegetation, we analyzed pollen, wood and plant fossils in the deposit. The results show vegetational transition from a deciduous broadleaved forest mainly of Ouercus subgen. Lepidobalanus to Pinus forest. In spite of the Holocene thermal optimum, the vegetation dominated by Ouercus subgen. Cyclobanopsis was not recognized at the Desaki site, as has been shown in many other regions of regions of western Japan. Ouercus sect. Prinus was replaced by Ouercus sect. Aegilops as the dominant section of Ouercus subgen. Lepidobalanus, suggesting early establishment of traditional rural vegetation of 'Satoyama' in Japan. However, no evidence for human agency has been obtained from the mid-Holocene archaeological sites around the Desaki site. Thus it is more likely that this vegetational transition resulted from the succession caused by natural forces such as ecological disturbance and climatic and/or endemic situations rather than by cultural deforestation. |
| Keywords | Desaki coast diatom remains Jomon transgression Kikai-Akahoya tephra mid-Holocene Paleoenvironment peat deposit plant fossils |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2004-12-31 |
| Volume | volume11 |
| Issue | issue1 |
| Start Page | 39 |
| End Page | 47 |
| ISSN | 1340-7414 |
| language | Japanese |
| Copyright Holders | 岡山大学地球科学研究報告編集委員会 |
| File Version | publisher |
| NAID | 120002310603 |
| JaLCDOI | 10.18926/ESR/13869 |
|---|---|
| Title Alternative | Relative sea-level changes of the Okayama Plain Area during the Holocene, Southwest Japan |
| FullText URL | earth_science_reports_011_1_33.pdf |
| Author | Suzuki, Shigeyuki| |
| Abstract | Postglacial relative sea-level change of the Okayama Plain Area has been analyzed. Former sea-levels were recognized by using peat beds and marine organisms which are also available for 14C dating. Peat beds were rhought to be formed under a stable sea-level condition. 14C ages of the analyzed peat beds were seprated by 4 groups ; 30～18 ka BP, 11～8 ka BP, 6～4 ka BP and 3～2.5 ka BP, indicate 4 stable sea-level periods. 2 transgressive events (18～11 ka BP and 8～6 ka BP) and one regressive event (3.5?～3 ka BP) were also inferred. |
| Keywords | sea-level change peat bed Holocene Okayama Plain |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2004-12-31 |
| Volume | volume11 |
| Issue | issue1 |
| Start Page | 33 |
| End Page | 37 |
| ISSN | 1340-7414 |
| language | Japanese |
| Copyright Holders | 岡山大学地球科学研究報告編集委員会 |
| File Version | publisher |
| NAID | 120002310268 |
| JaLCDOI | 10.18926/ESR/13863 |
|---|---|
| Title Alternative | Increase Rate of fCO2 in the Eastern Equatorial Pacific Ocean |
| FullText URL | earth_science_reports_011_1_15.pdf |
| Author | Kondo, Fumiyoshi| Tsukamoto, Osamu| Watanabe, Shuichi| |
| Abstract | In the Eastern Equatorial Pacific Ocean, increase rates of fCO2 in the air and the ocean were evaluated using the CDIAC data set. The fCO2 in the air was increasing about 1.28μatm/year during 1957-1995. This result is almost same as the rate at the Mauna Loa, Hawaii in Tropical Pacific Ocean. The increase rate of fCO2 in the seawater was estimated as 1.64μatm/year. In this study it is found that the increase rate of fCO2 in the seawater is the almost same as that of fCO2 in the air. This reault supports the result on the snapshot analysis of Takahashi et al. (1983) in thr North Atlantic Ocean during 1958-1982. It is smaller than the result including seasonal variation in the Eastern Subtropical Pacific Ocean. These reault indicated that the anthropogenic CO2 in the air has affected fCO2 in seawater through CO2 gas exchange between the atmosphere and the ocean. It is found that fCO2 in the seawater has increased in the Eastern Equatiorial Pacific Ocean in spite of the large CO2 source region. It suggested that CO2 source potential has not changed in this ocean durung 1957-1995. |
| Keywords | fCO2 Increase Rate Eastern Equatorial Pacific Ocean E1 Nino La Nina |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2004-12-31 |
| Volume | volume11 |
| Issue | issue1 |
| Start Page | 15 |
| End Page | 22 |
| ISSN | 1340-7414 |
| language | Japanese |
| Copyright Holders | 岡山大学地球科学研究報告編集委員会 |
| File Version | publisher |
| NAID | 120002310498 |
| JaLCDOI | 10.18926/ESR/13847 |
|---|---|
| Title Alternative | Geology of Holocene deposits in Mizushima Area, Okayama Prefecture, Japan |
| FullText URL | EAR_13_1_15.pdf |
| Author | Suzuki, Shigeyuki| |
| Abstract | The study srea, Mizushima is occupied by polder and reclaimed land. The ground of this area is composed of the Holocene deposits below the surface. The deposits are mostly 10 to 20m in thickness and composed of 2 units, the B Unit and C&D Unit. The B Unit is composed of muddy sand with 2 to 3m in thickness. This unit is thought to be deposited in the mouth of paleoriver. The C&D Unit is composed of marine mud and sand with 10 to 15m in thickness. This unit is especially soft and will expand ground oscillations during an earthquake. |
| Keywords | Holocene deposits Mizushima Area Ground oscillation |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2006-03-31 |
| Volume | volume13 |
| Issue | issue1 |
| Start Page | 15 |
| End Page | 18 |
| ISSN | 1340-7414 |
| language | Japanese |
| Copyright Holders | 岡山大学地球科学研究報告編集委員会 |
| File Version | publisher |
| NAID | 120002310562 |
| JaLCDOI | 10.18926/ESR/13844 |
|---|---|
| Title Alternative | バングラディシュの更新世台地の地形と地質 |
| FullText URL | EAR_13_1_1.pdf |
| Author | Towhida Rashid| Md. hossain Monsur| Suzuki, Shigeyuki| |
| Abstract | With regards to the origin and evolution of the Pleistocene tracts (Lalmai, Madhupur and Barind tracts) of Bangladesh, two trends of thoughts are common. Most of the authors believed that the Madhupur, Barind and Lalmai tracts represent tectonically uplifted surface. Some researchers have different opinion and they believed that the Lalmai hills and the Madhupur locality represent tectonically uplifted blocks but the whole Barind tract and the major portion of the Madhuput tracts are not tectonically uplifted, rather these are originated by erossional-depositional processes. In order to solve the problems associated with origin and evolution of Pleistocene tracts of Bangladesh, further study is needed. Borehole data may be collected and fusion images can be prepared from aerial photographs and setellite images to detect netectonic imprins and geomorphological signatures of the areas. Elaborate laboratory analysis of sediment deposits, radiocarbon dating my indicate a new dimension about the origin and evolution of these tracts. |
| Keywords | Bangladesh Lalmai Hill Barind Tract Madhupur Tract Neotectonices Aerial photographs Satellite Image Fusion Image |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2006-03-31 |
| Volume | volume13 |
| Issue | issue1 |
| Start Page | 1 |
| End Page | 13 |
| ISSN | 1340-7414 |
| language | English |
| Copyright Holders | 岡山大学地球科学研究報告編集委員会 |
| File Version | publisher |
| NAID | 120002310445 |
| JaLCDOI | 10.18926/ESR/13828 |
|---|---|
| Title Alternative | Storm surge in the Seto Inland Sea accompanied by Typhoons in 2004 |
| FullText URL | earth_science_reports_014_1_1.pdf |
| Author | Asanuma, Tomomitsu| Tsukamoto, Osamu| Ogawa, Kouji| |
| Abstract | In 2004, Seto Inland Sea coast suffered severe damages of storm surge. This area never experienced storm surge damage in recent half century and people were not ready for the storm surge. In two typhoons of T0416 and T0418, surge anomaly were more than 150cm in Bisan-Seto area. Storm surges appeared after the maximum approach of typhoon not only due to surface low pressure but also due to wind stress as westerly. Because of geographical complexity of Seto Inland Sea, the surge process have not been well understood. Therefore, it is necessary to study the effects of the wind and the surface pressure using a numerical model. Atmospheric model MM5 and ocean model POM were used as a numerical experiment, including the astronomical tide model NAO. Aｓ the results of numerical simulation of the storm surge, atmospheric conditions were well simulated but ocean model was rather complex. There are a lot of island in Seto Inland Sea and sea water movement in the model was very much influenced by the topography and wind stress effect appeared much smaller. In the no-island model, storm surge height was a little improved. However the simulated surge height was still less than the observed height. Further improvement of the ocean model application should be considered in future studies. |
| Keywords | Typhoon Storm Surge Seto Inland Sea surface pressure wind stress |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2008-03-31 |
| Volume | volume14 |
| Issue | issue1 |
| Start Page | 1 |
| End Page | 9 |
| ISSN | 1340-7414 |
| language | Japanese |
| Copyright Holders | 岡山大学地球科学研究報告編集委員会 |
| File Version | publisher |
| NAID | 120002310572 |
| Author | Masuda, Masaharu| Fukumoto, Shoko| |
|---|---|
| Published Date | 2008-02 |
| Publication Title | 岡山大学農学部学術報告 |
| Volume | volume97 |
| Issue | issue1 |
| Content Type | Departmental Bulletin Paper |
| JaLCDOI | 10.18926/11726 |
|---|---|
| Title Alternative | 生体電気信号の計測システムへの電力線からの誘導障害に関するインターフェイスモデル |
| FullText URL | 010_2_107_115.pdf |
| Author | Adli| Yamamoto, Yoshitake| Nakamura, Takao| |
| Abstract | A modelling of interface construction relating to power-line interference phenomenon was described. Source of interference was displacement currents which flowed from AC power-line configuration (APC) to a model. The interference depends on some factors: distance between the APC and a model ; length of unshielded leads ; position of the APC in vertical or horizontal direction ; and skin-electrode impedances which were balance or unbalanced. The position of APC and skin-electrode impedances were important in contributing of the interference. The interference was still large even though skin-electrode impedances were balance. This was caused by the disagreement in two displacement currents. It was overcame by adjustment of APC in vertical direction. As a result, total interference would be very small or zero. The result shows that interference in ECG signal recording can be eliminated to about 10 μV. Although interference of power-lines is a complicated phenomenon, the problem is easier to understand by using this modelling. |
| Keywords | AC power-line configuration (APC) (電力線配置) biopotential signal (生体電気信号) displacement current (変位電流) physical model of interference (モデル) power-line interference (誘導障害) |
| Publication Title | 岡山大学医学部保健学科紀要 |
| Published Date | 2000-03-24 |
| Volume | volume10 |
| Issue | issue2 |
| Start Page | 107 |
| End Page | 115 |
| ISSN | 1345-0948 |
| language | English |
| File Version | publisher |
| NAID | 120002313382 |
| JaLCDOI | 10.18926/11709 |
|---|---|
| Title Alternative | 歯科インプラント動揺測定装置の開発 |
| FullText URL | 011_1_025_034.pdf |
| Author | Oka, Hisao| Ono, Koichi| Wijaya Sastra Kusuma| Saratani, Keiji| Kawazoe, Takayoshi| |
| Abstract | Evaluation of dental implantation is very important because it gives useful information for both planning the dental treatment and evaluating of prognosis. This study aimed at improving our previously developed Tooth Mobility (TM) tester and developing a dental implant movement (IM) checker. The measuring probe included a bimorph transducer of two piezoelectric elements. It was actuated by single frequency and detected tooth acceleration. The acceleration signal was processed and the IM score was calculated in PC. Two artificial implant models in which IMZ implant was buried with different elasticity of surrounding (molteno(@)) were used to examine the performance of the IM checker. The IM scores obtained in the models were 29 and 58. The measurement time was below 15 seconds. The average of measurement variation of one operator was below 6% and the average variation among five operators was below also 6%. The IM checker reduced a measurement variation by 51% and a measuring time by 61% compared with those of the TM tester in natural teeth. The newly developed IM checker had sufficient measuring reliability and we could objectively estimate the implant movement in dental clinics. |
| Keywords | tooth mobility (歯の動揺) mechanical mobility (機械モビリティ) dental implant (インプラント) manual examination (触診) |
| Publication Title | 岡山大学医学部保健学科紀要 |
| Published Date | 2000-11-16 |
| Volume | volume11 |
| Issue | issue1 |
| Start Page | 25 |
| End Page | 34 |
| ISSN | 1345-0948 |
| language | English |
| File Version | publisher |
| NAID | 120002313864 |
| JaLCDOI | 10.18926/fest/11614 |
|---|---|
| Title Alternative | Preparation and Properties of ZnO Transparent Conductive Thin Films by Activated Reactive Evaporation Method |
| FullText URL | 002_121_129.pdf |
| Author | Fujiwara, Takashi| Fujii, Tatsuo| Nanba, Tokuro| Takada, Jun| Miura, Yoshinari| |
| Abstract | Zinc oxide films were prepared on silica glass substrates by the use of an r.f. activated reactive evaporation (ARE) method, and were examined by X-ray diffraction (XRD) and scanning electron microscope (SEM). The electrical conductivity of the films and the doping effect of Al ions were also investigated. XRD measurements indicate that the films were c-axis oriented and that an r.f. plasma of Zn and O was necessary for the ZnO film deposition. Substrate temperature, oxygen gas pressure, evaporation rate, r.f. power and Al doping amount affect the c-axis orientation, the growth rate, the microstructure of the films and electrical conductivity. Optimum conditions with a fine texture of the surface and having good ctystallinity as well as good conductivity (≒10(-4)Ω・cm) were as follows : the substrate temperature; 200℃, the total evaporation rate; 1.0Å/s, the oxygen pressure; 2.0×10(-4) Torr, the r.f. power; 250W and the Al evaporation rare ratio; 2～6%. The films with 1.0×10(-3)Ω・cm were prepared at 50℃ for the substrate temperature. |
| Keywords | ZnO film Al doped ZnO transparent conductive film r.f. activated reactive evaporation method |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 1997-01-10 |
| Volume | volume2 |
| Issue | issue1 |
| Start Page | 121 |
| End Page | 129 |
| ISSN | 1341-9099 |
| language | Japanese |
| File Version | publisher |
| NAID | 120002313550 |
| Author | Nagai, Isaku| |
|---|---|
| Published Date | 2007-03-23 |
| Publication Title | |
| Content Type | Thesis or Dissertation |
