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Research
1. Research Project 2. Publication List 3. Apparatus 4. Acceptable Research Projects
1. Research Project
Ishiyama
・Research on elucidation of genesis of mineral deposits and development of a method for mineral exploration
Our research group is carrying out a study to develop a method for exploration of mineral resources, including base, precious and rare metals, on the basis of geological and geochemical approaches such as examinations of modes of occurrence and mobility of these metals in a natural environment.
・Research on transportation and precipitation mechanisms of heavy and rare metals in thermal water from an acidic hot spring, mine drainage water from an abandoned mine and river water
Rare metals and heavy metals in thermal water from an acidic hot spring and mine drainage water from an abandoned mine are also being investigated to understand the transportation and precipitation mechanisms of the metals. The results will be used to establish methods for reducing effects on the environment.
Murakami
・Sophisticated utilization of natural porous materials such as diatomite and zeolite
Natural porous materials such as diatomite and zeolite are main products of Northeast Japan. This research aims to open up a new avenue of utility of these materials. We have developed silicon metal and fine-particle silicon carbide powders from diatomite. Their absorbent properties are very useful as emergency protection against neutrons.
Fukudome
・Establishment of a subsistence theory for self-reliance of a community and the people who live there
We are trying to create new technology and skills for human subsistence while learning from the traditional wisdom and skills for self-support of ancient people, and we are studying its significance for labor ontology and environmental resources.
Saito
・Development of novel nano-scale magnetic imaging methods and their application to advanced magnetic materials and devices
We have developed 1) novel nano-scale magnetic imaging methods such as alternating magnetic force microscopy, which enables measurement of the amplitude and polarity of an AC magnetic field with a wide frequency region, and near-field magnetic force microscopy, which enables measurement of the amplitude and direction of a DC magnetic field near the sample surface and 2) high spatial resolution magnetic sensors for these measurements. We have also applied these methods to advanced magnetic materials and devices to improve their magnetic properties.
Yoshimura
・Fabrication of thin films with high quality by using plasma irradiation during sputter deposition
To obtain high-performance thin film devices, a new process for fabrication of highly functional thin films with high quality under conditions adaptable to manufacturing technology is needed. We have developed a new sputtering process to fabricate high-quality films at low manufacturing temperature using plasma irradiation during sputter deposition.
Hayashi
・Macro/Microstructural control of ceramics prepared by electrophoretic deposition method
Electrophoretic deposition (EPD) is one of the ceramic processing methods for ceramic coating and free standing films, in which ceramic particles are deposited on an electrode (substrate) as a thick film by an applied electric field. Various aspects of the EPD process, from basic science to the development of applications, are being investigated.
・Preparation of materials for environmental coordination from natural raw materials by ceramic processing techniques
Materials for environmental coordination are being developed mainly from natural zeolite by various ceramic processing techniques such as electrophoretic deposition (EPD) and geopolymer reaction.
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2. Publication List
Ishiyama, D., Miyata, M., Shibata, S., Satoh, S., Mizuta, T. Fukuyama, M. and Ogasawara, M. (2011): Geochemical characteristics of Miocene Fe-Cu-Pb-Zn granitoids associated mineralization in the Chichibu skarn deposit (central Japan): evidence for magmatic fluids generation coexisting with granitic melt. Geol. Soc., London, Special Publications; Vol. 350, p. 69-88.
Hammond, N. Q., Robb, L. J., Foya, S. and Ishiyama D. (2011): Mineralogical, fluid inclusion and stable isotope characteristics of Birimian orogenic gold mineralization at the Morila Mine, Mali, West Africa. Ore Geol. Rev. (in press)
Ishiyama, D., Shinoda, K., Shimizu, T., Matsubaya, O. and Aikawa, N. (1999): Structural states and isotopic compositions of water in hydrothermal quartz. Econ, Geol., Vol. 94, p.1347-1352.
Kawaraya, H., Miura, H., Matsubaya, O. and Ishiyama, D. (2010): Geochemical characteristics and origin of groundwater draining into a large-scale tunnel, northern part of Iwate Prefecture, Scientific and Technical Reports of graduate school of engineering and resource science, Akita University, No.30, 47-53 (in Japanese with English abstract).
Matsubaya, O., Kawaraya, H., Ishiyama, D., Takahashi, Y., Suzuki, M. and Igarashi, K. (2007): Geochemical character and origin of hot spring and fumaroles in Doroyu and Kawarage areas, Akita Prefecture, J. Hot Spring Science, Vol.57, No.2, 88-98 (in Japanese with English abstract).
Kawaraya, H., Matsuda, H. and Matsubaya, O. (2005): Identification of discharge components by means of oxygen and hydrogen isotopic ratios and chloride and sulfate ion concentrations in river source region –A case study of Taihei river, Akita, Japan-, J. Japan Soc. Hydro & Water Resour., Vol. 18, No.4, 370-381 (in Japanese with English abstract).
Murakami, H., Odano, N., Sawada, K., Ohnishi, S., Konnai, A., Kobayashi, Y., Ohshima, H. and Okuta, H. (2005): The use of microporous siliceous shale and zeolite for high-performance radiation shielding materials, ICMR2005AKITA, Akita, Japan.
Murakami, H., Kimata, M., Shimoda, S., Ito E. and Sasaki, S. (1992): Solubility of CaMgSi3O8 and Si4O8 endmembers in anorthite, Jour. Min. Pet. Econ. Geol., 87, 491-509.
Murakami, H., Kimata M. and Shimoda, S. (1991): Native copper included by anorthite from the island of Miyakejima: implications for arc magmatism, Jour. Min. Pet. Econ. Geol., 86, 364-374, 1991.
Fukudome, T. (2009): The physical subjectivity toward nature in relation to subsistence labour, Entropy, Vol. 67, p. 1-7. (in Japanese).
Fukudome, T. (2008): Emigration tourism theory for regeneration of subsistence and environmental-resources in the intermediate and mountainous area, Entropy, Vol. 64, p. 13-20 (in Japanese).
Fukudome, T. (2007): Labor philosophical considerations on the traditional subsistence technology. Entropy, Vol. 61, p. 8-14 (in Japanese).
Saito, H., Lu, W., Hatakeyama, K., Egawa, G. and Yoshimura, S. (2010): High frequency magnetic field imaging by frequency modulated magnetic force microscopy, Journal of Applied Physics, Vol. 107, p. 09D309.
Saito, H., Ikeya, H., Egawa, G., Ishio, S. and Yoshimura, S. (2009): Magnetic force microscopy of alternating magnetic field gradient by frequency modulation of tip oscillation, Journal of Applied Physics, Vol. 105, p. 07D524.
Saito, H., Egawa, G., Ishio, S. and Li, G. Q. (2008): Magnetic force microscopy imaging of in-plane magnetic field gradient using transient oscillation, J. Appl. Phys., Vol. 103, pp. 07D921-3 (2008).
Yoshimura, S., Kobayashi, H., Egawa, G., Saito, H. and Ishida, S. (2011): Acceleration of ordering transformation of a new Fe2(Mn,Cr)Si Heusler-alloy film by VHF plasma irradiation process during RF sputter deposition”, Journal of Applied Physics, Vol. 109 (in press).
Yoshimura, S., Omiya, S., Egawa, G., Saito, H. and Bai, J. (2011): Control of magnetic anisotropy field of (001) oriented L10-Fe(PdxPt1-x) films for MRAM application”, Journal of Physics: Conference Series, Vol. 266, No. 1, p. 012114.
Yoshimura, S., Asano, H., Nakamura, Y., Yamaji, K., Takeda, Y., Matsui, M., Ishida, S., Nozaki, Y. and Matsuyama, K.. (2008): Crystalline structure and magnetic property of Fe2CrSi Heusler alloy films - New ferromagnetic material for high performance MRAM -, Journal of Applied Physics, Vol. 103, p.07D716.
Hayashi, S., Onoe, J., Ebina, K. and Kodama, N. (2009): Electrophoretic Deposition/Inf iltration of Natural Zeolite Particles on/into Various Substrates, Key Enginee ring Materials, Vol. 412, p. 119-23.
Jha, V.K. and Hayashi, S. (2009): Modification on Natural Clinoptilolite Zeolite for Its NH4+ Retention Capacity. J. Hazardous Mater., Vol. 169, p.29-35.
Hayashi, S., Sato, C. and Nakagawa, Z. (2006): Effect of Different Electrode Material s on Electrophoretic Depositional Behavior of Yttria-stabilized Zirconia Powde r, J. Mater. Sci., Vol. 41, p. 8068-73.
Yamamoto, O., Ohira, T., Alvarez, K. and Fukuda M.. (2010): Antibacterial Characteristics of CaCO3-MgO Composites, Materials Science and Engineering B, Vol. 173, p. 208-12.
Ohira, T., Kawamura, M., Iida, Y., Fukuda, M. and Yamamoto, O. (2008): Influence of the Mixing Ratio on Antibacterial Characteristics of MgO-ZnO Solid Solution in Two Phase Coexistence Region, Journal of the Ceramic Society of Japan, Vol. 116[11], p. 1234-37.
Yamamoto, O., Özkal, B., Jiang, W., Ohira, T. and Nakagawa, Z. (2007): Coating of ZnO Chip with Carbon and Its Effect on Longevity of a Cut Flower, Journal of the Ceramic Society of Japan, Vol. 115, p. 993-995.
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3. Apparatus
- X-ray powder diffractometer
- General purpose X-ray diffraction system
- Micro-Fourier-transform-infrared spectrometer
- Heating and freezing stage for fluid inclusion study (Linkam THMS600 (-200 to 600 degrees C)
and TH1500 (up to 1500 degrees C)- Five channel automatic electron microprobe analyzer
- Field emission-scanning electron microscope
- Scanning probe microscopy
- Hydrothermal experimental system
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4. Acceptable Research Projects
- Research on exploration of mineral resources and geothermal energy
- Research on water resources including transportation and precipitation mechanisms of heavy metals in thermal water from a hot spring, mine drainage water and river water
- Application of natural porous materials such as diatomite and zeolite to agriculture
- Nano-scale magnetic imaging and analysis of a magnetic domain structure for advanced magnetic materials and devices
- Fabrication of metallic, oxidized or nitrided thin films with high quality for high-performance thin film devices
- Preparation of various ceramic thick films by electrophoretic deposition
- Study on functions of geopolymer materials from natural raw materials
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