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著者

  • Tetsuo Oka
2011

Development and test of model apparatus utilizing HTS magnetic levitation for non-contact spinning clean-up processors of photo mask production

Saito, K., Fukui, S., Ogawa, J., Oka, T., Sato, T., Sorimachi, S. & Miyazaki, S., 2011 6 1, : : IEEE Transactions on Applied Superconductivity. 21, 3 PART 2, p. 2241-2244 4 p., 5617305.

研究成果: Article

2 引用 (Scopus)
5 引用 (Scopus)

Experimental evaluation of the effect on AC loss of a polygonal arrangement in YBCO assembled conductors

Ogawa, J., Fukui, S., Oka, T., Sato, T., Ito, T., Sugisawa, J. & Tamura, A., 2011 6 1, : : IEEE Transactions on Applied Superconductivity. 21, 3 PART 3, p. 3285-3288 4 p., 5613958.

研究成果: Article

5 引用 (Scopus)
5 引用 (Scopus)

Influence of DC offset transport current on AC loss characteristics in HTS tapes

Ogawa, J., Fukui, S., Oka, T., Sato, T., Kojima, H., Shibayama, M. & Egawa, M., 2011 6 1, : : IEEE Transactions on Applied Superconductivity. 21, 3 PART 3, p. 3325-3328 4 p., 5621862.

研究成果: Article

6 引用 (Scopus)

Magnetic separation technique for groundwater by five HTS melt-processed bulk magnets arranged in a line

Oka, T., Seki, H., Kimura, T., Mimura, D., Fukui, S., Ogawa, J., Sato, T., Ooizumi, M., Fujishiro, H., Hayashi, H., Yokoyama, K. & Stiehler, C., 2011 11 1, : : Physica C: Superconductivity and its applications. 471, 21-22, p. 1506-1510 5 p.

研究成果: Article

1 引用 (Scopus)

Performance of trapped magnetic field in superconducting bulk magnets activated by pulsed field magnetization

Oka, T., Seki, H., Ogawa, J., Fukui, S., Sato, T. & Yokoyama, K., 2011 6 1, : : IEEE Transactions on Applied Superconductivity. 21, 3 PART 3, p. 3356-3359 4 p., 5658131.

研究成果: Article

13 引用 (Scopus)

Prototype of SC inverter

Osamura, K., Sakai, A., Nakamura, T., Oka, T., Fukuda, S. & Yamaguchi, S., 2011 6 1, : : IEEE Transactions on Applied Superconductivity. 21, 3 PART 2, p. 1445-1448 4 p., 5675739.

研究成果: Article

1 引用 (Scopus)
2012

Experimental investigation of loss characteristics with AC and DC offset transport current in HTS double pancake coil

Ogawa, J., Fukui, S., Oka, T., Sato, T., Shibayama, M., Egawa, M. & Sato, A., 2012 6 25, : : IEEE Transactions on Applied Superconductivity. 22, 3, 4705004.

研究成果: Article

7 引用 (Scopus)

Field trapping property of HTS bulk magnet with reduced voids in pulsed field magnetizing process

Oka, T., Seki, H., Ishiduka, D., Ogawa, J., Fukui, S., Sato, T., Yokoyama, K. & Murakami, A., 2012 1 1, : : Journal of Physics: Conference Series. 400, PART 2, 022089.

研究成果: Conference article

5 引用 (Scopus)

Influence of AC transport current balance on AC loss in a two layered polygonal YBCO assembled conductor

Ogawa, J., Fukui, S., Oka, T., Sato, T., Tamura, A., Kasuga, E. & Ryu, K. W., 2012 6 25, : : IEEE Transactions on Applied Superconductivity. 22, 3, 4704804.

研究成果: Article

2 引用 (Scopus)

Magnetic field distribution of permanent magnet magnetized by static magnetic field generated by HTS bulk magnet

Oka, T., Kawasaki, N., Fukui, S., Ogawa, J., Sato, T., Terasawa, T., Itoh, Y. & Yabuno, R., 2012 6 25, : : IEEE Transactions on Applied Superconductivity. 22, 3, 6101562.

研究成果: Article

7 引用 (Scopus)

Magnetizing of permanent magnets using HTS bulk magnets

Oka, T., Muraya, T., Kawasaki, N., Fukui, S., Ogawa, J., Sato, T. & Terasawa, T., 2012 1 1, : : Cryogenics. 52, 1, p. 27-31 5 p.

研究成果: Article

3 引用 (Scopus)

Measurement and numerical analysis of AC loss in high temperature superconducting coil

Fukui, S., Shibayama, M., Ogawa, J., Oka, T., Sato, T., Takao, T. & Tsukamoto, O., 2012 6 25, : : IEEE Transactions on Applied Superconductivity. 22, 3, 4704904.

研究成果: Article

3 引用 (Scopus)

Numerical study of optimization design of high temperature superconducting field winding in 20 MW synchronous motor for ship propulsion

Fukui, S., Kawai, T., Takahashi, M., Ogawa, J., Oka, T., Sato, T. & Tsukamoto, O., 2012 6 25, : : IEEE Transactions on Applied Superconductivity. 22, 3, 5200504.

研究成果: Article

12 引用 (Scopus)
2013
2 引用 (Scopus)

Evaluation of pulsed-field magnetization of a bulk superconductor with small holes

Yokoyama, K., Oka, T., Kondo, N. & Hosaka, S., 2013 2 11, : : IEEE Transactions on Applied Superconductivity. 23, 3, 6403884.

研究成果: Article

3 引用 (Scopus)
3 引用 (Scopus)

Flux-invading behaviors and temperature changes in Dy123 bulk magnet in iterative pulse field magnetization process

Oka, T., Ishiduka, D., Ogawa, J., Fukui, S., Sato, T., Yokoyama, K., Murakami, A. & Stopfel, H., 2013 5 6, : : Physica C: Superconductivity and its applications. 494, p. 46-49 4 p.

研究成果: Article

5 引用 (Scopus)

Investigation of the Flux Flow-inhibiting Effect of a Hole-opened Superconducting Bulk Magnet

Yokoyama, K., Tsukui, T., Mita, H., Tsubonoya, N. & Oka, T., 2013 1 1, : : Physics Procedia. 58, p. 302-305 4 p.

研究成果: Conference article

公開

Learn-by-doing engineering education programs driven by the engineers of private companies and societies

Oka, T., Harada, S., Tanabe, Y., Narumi, T., Kaneko, F., Sugawara, A., Ishii, N., Nishimura, S., Maruyama, T., Sengoku, M., Ohkawa, H. & Tsubokawa, N., 2013 5 10, : : IEEJ Transactions on Fundamentals and Materials. 133, 4, p. 180-185+6

研究成果: Article

Magnetic and thermal properties of HTS bulk magnet in the pulsed-field magnetizing process

Oka, T., Ishiduka, D., Ogawa, J., Fukui, S., Sato, T., Yokoyama, K. & Murakami, A., 2013 4 1, : : Journal of Superconductivity and Novel Magnetism. 26, 4, p. 1301-1306 6 p.

研究成果: Article

5 引用 (Scopus)

Magnetic precipitate separation for Ni plating waste liquid using HTS bulk magnets

Oka, T., Kimura, T., Mimura, D., Fukazawa, H., Fukui, S., Ogawa, J., Sato, T., Ooizumi, M., Yokoyama, K., Tsujimura, M. & Terasawa, T., 2013 1 15, : : Physica C: Superconductivity and its applications. 484, p. 325-328 4 p.

研究成果: Article

3 引用 (Scopus)

Measurement and numerical analysis of dependence of ac loss in polygonal conductor assembled by YBCO tapes on gap length between neighboring tapes

Fukui, S., Hatakeyama, S., Nanayama, J., Maruko, A., Ogawa, J., Sato, T., Oka, T. & Tsukamoto, O., 2013 2 12, : : IEEE Transactions on Applied Superconductivity. 23, 3, 6407801.

研究成果: Article

5 引用 (Scopus)

Pulsed-field Invasion to HTS Bulk Magnets Grown from Two Seeds with Varied Seed-crystal Positions and Numbers

Oka, T., Yamada, Y., Horiuchi, T., Ogawa, J., Fukui, S., Sato, T., Yokoyama, K. & Langer, M., 2013 1 1, : : Physics Procedia. 58, p. 74-77 4 p.

研究成果: Conference article

公開
2 引用 (Scopus)

Pulsed-field magnetization of a bulk superconductor with small holes

Yokoyama, K., Oka, T., Kondo, N. & Hosaka, S., 2013 1 15, : : Physica C: Superconductivity and its applications. 484, p. 343-347 5 p.

研究成果: Article

6 引用 (Scopus)
2014

Collection of Ni-bearing material from electroless plating waste by magnetic separation with HTS bulk magnet

Oka, T., Fukazawa, H., Fukui, S., Ogawa, J., Sato, T., Ooizumi, M., Tsujimura, M. & Yokoyama, K., 2014 1 15, : : Physica C: Superconductivity and its applications. 496, C, p. 58-62 5 p.

研究成果: Article

11 引用 (Scopus)

Educational programs for freshmen based on forefront scientific researches on the environmental purification project with intense magnetic fields

Oka, T., Yamauchi, T., Abe, K., Narumi, T. & Tanabe, Y., 2014 1 21, Proceedings of 2014 International Conference on Interactive Collaborative Learning, ICL 2014. Institute of Electrical and Electronics Engineers Inc., p. 1068-1072 5 p. 7017931. (Proceedings of 2014 International Conference on Interactive Collaborative Learning, ICL 2014).

研究成果: Conference contribution

Influence of the arrangement of HTS tapes inserted in an iron core on AC loss characteristics

Ogawa, J., Fukui, S., Oka, T., Sato, T., Fushimi, A. & Shoda, T., 2014 1 1, : : IEEE Transactions on Applied Superconductivity. 24, 3, 6595123.

研究成果: Article

5 引用 (Scopus)

Magnetic flux-trapping of anisotropic-grown Y-Ba-Cu-O bulk superconductors during and after pulsed-field magnetizing processes

Oka, T., Yamada, Y., Horiuchi, T., Ogawa, J., Fukui, S., Sato, T., Yokoyama, K. & Langer, M., 2014 1 1, : : Journal of Physics: Conference Series. 507, PART 1, 012039.

研究成果: Conference article

4 引用 (Scopus)

Magnetic separation technique using high temperature superconducting bulk magnets and application to plating liquid waste treatment

Oka, T., Fukazawa, H., Yoshizawa, N., Takayanagi, Y., Ogawa, J., Fukui, S., Sato, T., Ooizumi, M., Tsujimura, M. & Yokoyama, K., 2014 1 1, : : Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy. 61, SUPLL.1, p. S164-S166

研究成果: Article

Numerical study of the influence of material properties on pulsed-field magnetization for hts bulk magnets

Ogawa, J., Oka, T., Fukui, S., Sato, T., Watanabe, N. & Basir, Z. M., 2014 1 1, : : IEEE Transactions on Applied Superconductivity. 24, 3, 6600815.

研究成果: Article

3 引用 (Scopus)

Strong magnetic field generator containing HTS bulk magnets and compact refrigerators

Oka, T., Hirayama, E., Kanai, T., Ogawa, J., Fukui, S., Sato, T., Yokoyama, K. & Nakamura, T., 2014 1 1, : : IEEE Transactions on Applied Superconductivity. 24, 3, 6626624.

研究成果: Article

20 引用 (Scopus)
2015

A Numerical Proposal of an After Heating Method for Pulse Field Magnetization for HTS Bulk Magnets

Ogawa, J., Oka, T., Fukui, S., Sato, T. & Watanabe, N., 2015 6 1, : : IEEE Transactions on Applied Superconductivity. 25, 3, 6945334.

研究成果: Article

Attempt to generate a strong and uniform magnetic field by face-to-face HTS bulk elements in a magnet system

Oka, T., Hirayama, E., Takahashi, Y., Kanai, T., Ogawa, J., Fukui, S., Sato, T., Yokoyama, K. & Nakamura, T., 2015 1 1, : : Physics Procedia. 67, p. 1005-1009 5 p.

研究成果: Conference article

4 引用 (Scopus)

Improvement of the trapped field performance of a holed superconducting bulk magnet

Yokoyama, K., Igarashi, R., Togasaki, R. & Oka, T., 2015 6 1, : : IEEE Transactions on Applied Superconductivity. 25, 3, 7006763.

研究成果: Article

2 引用 (Scopus)

Magnetization behavior of RE123 bulk magnets bearing twin seed-crystals in pulsed field magnetization processes

Oka, T., Miyazaki, T., Ogawa, J., Fukui, S., Sato, T., Yokoyama, K. & Langer, M., 2015 12 17, : : Superconductor Science and Technology. 29, 2, 024003.

研究成果: Article

5 引用 (Scopus)

Preferential magnetic flux invasion and heat generation owing to macrostructure in HTS bulk magnets in pulse field magnetization processes

Oka, T., Ota, H., Shimoda, T., Ogawa, J., Fukui, S., Sato, T., Yokoyama, K., Murakami, A. & Langer, M., 2015 6 1, : : IEEE Transactions on Applied Superconductivity. 25, 3, 6980106.

研究成果: Article

3 引用 (Scopus)

Pulsed field magnetization characteristics of a holed superconducting bulk magnet

Yokoyama, K., Igarashi, R., Togasaki, R. & Oka, T., 2015 6 25, : : Physica C: Superconductivity and its Applications. 518, p. 117-121 5 p.

研究成果: Article

2 引用 (Scopus)

Roles and effects of human network of supporting experts out of Niigata University to practical engineering education

Oka, T., Abe, K., Yamauchi, T., Narumi, T., Ishii, N., Nishimura, S., Sato, T., Tanabe, Y. & Sengoku, M., 2015 11 4, Proceedings of 2015 International Conference on Interactive Collaborative Learning, ICL 2015. Institute of Electrical and Electronics Engineers Inc., p. 150-154 5 p. 7318017

研究成果: Conference contribution

2016

Development of a Desktop-Type Superconducting Bulk Magnet

Yokoyama, K., Kulawansha, E., Yuanding, Z. & Oka, T., 2016 6 1, : : IEEE Transactions on Applied Superconductivity. 26, 4, 7386635.

研究成果: Article

7 引用 (Scopus)

Experimental Investigation of AC Loss Characteristics of Stacked HTS Tapes in an Iron Core

Ogawa, J., Fukui, S., Oka, T., Sakurai, T., Sano, Y., Tada, H. & Yoshii, Y., 2016 6 1, : : IEEE Transactions on Applied Superconductivity. 26, 4, 7435291.

研究成果: Article

8 引用 (Scopus)
3 引用 (Scopus)

Magnetic Field Direction Dependence of AC Losses in Bi2223/Ag Tape

Ogawa, J., Fukui, S., Oka, T., Shidara, N., Iwashita, R. & Ohya, M., 2016 6 1, : : IEEE Transactions on Applied Superconductivity. 26, 4, 7377072.

研究成果: Article

Magnetic Separation for Recovering Ni Compounds from Plating Waste with Use of HTS Bulk Magnets

Oka, T., Takayanagi, Y., Machida, S., Ichiju, K., Fukui, S., Ogawa, J., Sato, T., Ooizumi, M., Tsujimura, M. & Yokoyama, K., 2016 6 1, : : IEEE Transactions on Applied Superconductivity. 26, 4, 7383257.

研究成果: Article

8 引用 (Scopus)

Selective Magnetic Field Invasion into HTS Bulk Magnets in Pulse Field Magnetizing Processes

Oka, T., Hara, K., Ogawa, J., Fukui, S., Sato, T., Yokoyama, K., Murakami, A. & Langer, M., 2016 4 1, : : IEEE Transactions on Applied Superconductivity. 26, 3, 7405303.

研究成果: Article

3 引用 (Scopus)

Uniform Magnetic Field between Face-to-Face HTS Bulk Magnets Combining Concave and Convex Magnetic Field Distributions

Oka, T., Takahashi, Y., Yaginuma, S., Ogawa, J., Fukui, S., Sato, T., Yokoyama, K. & Nakamura, T., 2016 1 1, : : Physics Procedia. 81, p. 45-48 4 p.

研究成果: Conference article

5 引用 (Scopus)
2017

Experimental and theoretical study of AC losses in variable asymmetrical magnetic environments

Ranecky, S. T., Watanabe, H., Ogawa, J., Oka, T., Gölden, D., Alff, L. & Genenko, Y. A., 2017 7 6, : : Superconductor Science and Technology. 30, 8, 085005.

研究成果: Article

5 引用 (Scopus)

Experimental investigation of AC loss characteristics in HTS tape with rotating magnetic field

Ogawa, J., Fukui, S., Oka, T., Sano, Y., Ogawa, M. & Ranecky, S. T., 2017 6 1, : : IEEE Transactions on Applied Superconductivity. 27, 4, 7812682.

研究成果: Article

2 引用 (Scopus)