Tetsuo Oka

  • 1918 Citations
  • 22 h-Index
1990 …2020

Research output per year

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Research Output

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Article
2007

Study on application of magnetic levitation utilizing HTS bulks to spin processors for photo mask production

Fukui, S., Sato, R., Ogawa, J., Oka, T., Yamaguchi, M., Sato, T., Miyazaki, S., Sasahara, T., Tamaki, T., Nishiwaki, S. & Yuki, Y., 2007 Oct 1, In : Physica C: Superconductivity and its applications. 463-465, SUPPL., p. 1289-1292 4 p.

Research output: Contribution to journalArticle

5 Citations (Scopus)

Study on optimization design of superconducting magnet for magnetic force assisted drug delivery system

Fukui, S., Abe, R., Ogawa, J., Oka, T., Yamaguchi, M., Sato, T. & Imaizumi, H., 2007 Oct 1, In : Physica C: Superconductivity and its applications. 463-465, SUPPL., p. 1315-1318 4 p.

Research output: Contribution to journalArticle

4 Citations (Scopus)

Temperature rise in melt-textured large grain superconducting bulk magnets during their magnetizing operations

Oka, T., Yokoyama, K., Fujishiro, H. & Noto, K., 2007 Sep 1, In : Physica C: Superconductivity and its applications. 460-462 II, SPEC. ISS., p. 748-749 2 p.

Research output: Contribution to journalArticle

8 Citations (Scopus)

Trapped field and temperature rise in rectangular-shaped HTSC bulk magnetized by pulse fields

Tateiwa, T., Sazuka, Y., Fujishiro, H., Hayashi, H., Nagafuchi, T. & Oka, T., 2007 Oct 1, In : Physica C: Superconductivity and its applications. 463-465, SUPPL., p. 398-401 4 p.

Research output: Contribution to journalArticle

8 Citations (Scopus)
2008

AC transport current loss characteristics of HTS assembled conductors arranged edge-to-edge or face-to-face

Ogawa, J., Fukui, S., Oka, T., Yamaguchi, M., Sato, T., Kume, S., Shinkai, K. & Sato, S., 2008 Jun 1, In : IEEE Transactions on Applied Superconductivity. 18, 2, p. 1353-1357 5 p., 4515899.

Research output: Contribution to journalArticle

5 Citations (Scopus)

Application of HTS bulk magnet system to the magnetic separation techniques for water purification

Oka, T., Kanayama, H., Fukui, S., Ogawa, J., Sato, T., Ooizumi, M., Terasawa, T., Itoh, Y. & Yabuno, R., 2008 Sep 15, In : Physica C: Superconductivity and its applications. 468, 15-20, p. 2128-2132 5 p.

Research output: Contribution to journalArticle

26 Citations (Scopus)

Compactly composed strong magnetic field generators with cryo-cooled high temperature bulk superconductors as quasi-permanent magnets

Oka, T., Hirose, Y., Kanayama, H., Kikuchi, H., Ogawa, J., Fukui, S., Sato, T. & Yamaguchi, M., 2008 Feb 1, In : Journal of Physics: Conference Series. 97, 1, 012102.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Construction of superconducting bulk magnet magnetron sputtering apparatus for fabrication of highly reflective optical mirrors

Mizutani, U., Yamaguchi, T., Ikuta, H., Tomofuji, T., Yanagi, Y., Itoh, Y. & Oka, T., 2008 Jun 15, In : Materials Science and Engineering B: Solid-State Materials for Advanced Technology. 151, 1, p. 84-89 6 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)

Evaluation of magnetic field distribution of superconducting bulk magnets with the same pole arrangement

Yokoyama, K., Oka, T. & Noto, K., 2008 Sep 15, In : Physica C: Superconductivity and its applications. 468, 15-20, p. 2165-2169 5 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)

Fabrication of Mo/Si multilayer mirrors for extreme ultraviolet lithography by means of superconducting bulk magnet magnetron sputtering

Mizutani, U., Yamaguchi, T., Ikuta, H., Tomofuji, T., Yanagi, Y., Itoh, Y. & Oka, T., 2008 Sep 15, In : Physica C: Superconductivity and its applications. 468, 15-20, p. 1456-1460 5 p.

Research output: Contribution to journalArticle

6 Citations (Scopus)

Numerical analysis of AC transport current loss measurements using a pick-up loop

Ogawa, J., Fukui, S., Oka, T., Yamaguchi, M., Sato, T., Hamada, T. & Tanaka, H., 2008 Jun 1, In : IEEE Transactions on Applied Superconductivity. 18, 2, p. 1358-1361 4 p., 4515900.

Research output: Contribution to journalArticle

Numerical analysis of bulk superconducting magnet magnetized by pulsed-field considering a partial difference of superconducting characteristics

Yokoyama, K., Oka, T., Fujishiro, H. & Noto, K., 2008 Jun 1, In : IEEE Transactions on Applied Superconductivity. 18, 2, p. 1545-1548 4 p., 4512029.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Reflective properties of Mo/Si multilayer for EUV lithography deposited by the magnetron sputtering device with superconducting bulk magnets

Yamaguchi, T., Ikuta, H., Tomofuji, T., Yanagi, Y., Itoh, Y., Oka, T. & Mizutani, U., 2008 Sep 15, In : Physica C: Superconductivity and its applications. 468, 15-20, p. 2170-2173 4 p.

Research output: Contribution to journalArticle

5 Citations (Scopus)

Study on optimal design of high temperature superconducting coil based on AC loss minimization

Fukui, S., Ohsugi, K., Nishijyo, T., Ogawa, J., Oka, T., Yamaguchi, M., Sato, T., Furuse, M., Takao, T. & Tsukamoto, O., 2008 Jun 1, In : IEEE Transactions on Applied Superconductivity. 18, 2, p. 1366-1369 4 p., 4510854.

Research output: Contribution to journalArticle

6 Citations (Scopus)

Study on performance improvements of a high-temperature superconducting coil with a lattice-shape cross section

Ishiguri, S., Oka, T., Fukui, S., Ogawa, J. & Sato, T., 2008 Jul 15, In : Physica C: Superconductivity and its applications. 468, 14, p. 1028-1031 4 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Study on the performance improvement of the high temperature superconducting coil with several separated coils at the edges

Ishiguri, S., Oka, T., Fukui, S., Ogawa, J. & Sato, T., 2008 Sep 15, In : Physica C: Superconductivity and its applications. 468, 15-20, p. 2152-2155 4 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)
2009

Accuracy of AC transport current loss in HTS tape measurements using a pick-up loop

Ogawa, J., Fukui, S., Oka, T., Sato, T., Maruko, A. & Tanaka, H., 2009 Jun 1, In : IEEE Transactions on Applied Superconductivity. 19, 3, p. 2391-2394 4 p., 5109567.

Research output: Contribution to journalArticle

A strong magnetic field generation by superconducting bulk magnets with the same pole arrangement

Yokoyama, K., Oka, T. & Noto, K., 2009 Jun 1, In : IEEE Transactions on Applied Superconductivity. 19, 3, p. 2178-2181 4 p., 5067189.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Development of a small-size superconducting bulk magnet system especially designed for a pulsed-field magnetization

Yokoyama, K., Oka, T. & Noto, K., 2009 Oct 15, In : Physica C: Superconductivity and its applications. 469, 15-20, p. 1282-1285 4 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Numerical analysis of AC loss characteristics of multi-layer HTS cable assembled by coated conductors

Fukui, S., Ogawa, J., Suzuki, N., Oka, T., Sato, T., Tsukamoto, O. & Takao, T., 2009 Jun 1, In : IEEE Transactions on Applied Superconductivity. 19, 3, p. 1714-1717 4 p., 4982598.

Research output: Contribution to journalArticle

20 Citations (Scopus)

Study of flow fractionation characteristics of magnetic chromatography utilizing high-temperature superconducting bulk magnet

Fukui, S., Shoji, Y., Ogawa, J., Oka, T., Yamaguchi, M., Sato, T., Ooizumi, M., Imaizumi, H. & Ohara, T., 2009 Mar 1, In : Science and Technology of Advanced Materials. 10, 1, 014610.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Study on magnetic separation system using high Tc superconducting bulk magnets for water purification technique

Oka, T., Kanayama, H., Tanaka, K., Fukui, S., Ogawa, J., Sato, T., Yamaguchi, M., Ooizumi, M., Yokoyama, K. & Noto, K., 2009 Jan 1, In : Journal of Physics: Conference Series. 156, 012031.

Research output: Contribution to journalArticle

6 Citations (Scopus)

Thermal and magnetic behaviors of a melt-textured superconducting bulk magnet in the zero-field-cooling magnetizing process

Oka, T., Yokoyama, K., Fujishiro, H. & Noto, K., 2009 Aug 11, In : Superconductor Science and Technology. 22, 6, 065014.

Research output: Contribution to journalArticle

10 Citations (Scopus)

Thermal behavior and field-trapping property of melt-textured superconducting bulk magnets activated by quasi-static magnetic fields

Oka, T., Yokoyama, K., Fujishiro, H. & Noto, K., 2009 Jan 1, In : Journal of Physics: Conference Series. 150, 5, 052195.

Research output: Contribution to journalArticle

2 Citations (Scopus)

Waste water purification by magnetic separation technique using HTS bulk magnet system

Oka, T., Kanayama, H., Tanaka, K., Fukui, S., Ogawa, J., Sato, T., Ooizumi, M., Terasawa, T., Itoh, Y. & Yabuno, R., 2009 Oct 15, In : Physica C: Superconductivity and its applications. 469, 15-20, p. 1849-1852 4 p.

Research output: Contribution to journalArticle

8 Citations (Scopus)
2010

Development of a small-size superconducting bulk magnet system using a 13 K refrigerator

Yokoyama, K., Oka, T. & Noto, K., 2010 Jun 1, In : IEEE Transactions on Applied Superconductivity. 20, 3, p. 973-976 4 p., 5433295.

Research output: Contribution to journalArticle

8 Citations (Scopus)

Evaluation of magnetic force distribution on a pair of superconducting bulk magnets

Yokoyama, K., Oka, T. & Noto, K., 2010 Nov 1, In : Physica C: Superconductivity and its applications. 470, 20, p. 1201-1206 6 p.

Research output: Contribution to journalArticle

Influence of transport current distribution on AC transport current loss measurement in an assembled conductor

Ogawa, J., Fukui, S., Oka, T., Sato, T., Shinkai, K., Koyama, T. & Ito, T., 2010 Jun 1, In : IEEE Transactions on Applied Superconductivity. 20, 3, p. 1300-1303 4 p., 5433294.

Research output: Contribution to journalArticle

15 Citations (Scopus)

Magnetic separation technique for environmental water purification by strong magnetic field generator loading HTS bulk magnets

Oka, T., Tanaka, K., Kimura, T., Mimura, D., Fukui, S., Ogawa, J., Sato, T., Ooizumi, M., Yokoyama, K. & Yamaguchi, M., 2010 Nov 1, In : Physica C: Superconductivity and its applications. 470, 20, p. 1799-1803 5 p.

Research output: Contribution to journalArticle

10 Citations (Scopus)

Numerical analysis of relation between AC loss characteristics and geometrical parameters of multi-layer polygonal conductor assembled by HTS coated conductor

Fukui, S., Suzuki, N., Ogawa, J., Oka, T., Sato, T. & Tsukamoto, O., 2010 Jun 1, In : IEEE Transactions on Applied Superconductivity. 20, 3, p. 2138-2141 4 p., 5443668.

Research output: Contribution to journalArticle

5 Citations (Scopus)

Numerical study on AC loss reduction of multi-pole HTS coil by optimal design of winding cross section of element coil

Fukui, S., Takahashi, M., Ogawa, J., Oka, T., Sato, T., Yamaguchi, M. & Takao, T., 2010 Jun 1, In : IEEE Transactions on Applied Superconductivity. 20, 3, p. 2150-2154 5 p., 5451072.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Research and development of non-contact spin processor for clean process in semiconductor-related-production system by applying HTS magnetic levitation

Fukui, S., Kazama, K., Sekiya, S., Ogawa, J., Oka, T., Sato, T., Sorimachi, S., Saito, K. & Miyazaki, S., 2010 Jun 1, In : IEEE Transactions on Applied Superconductivity. 20, 3, p. 977-980 4 p., 5433322.

Research output: Contribution to journalArticle

3 Citations (Scopus)
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 Jun 1, In : IEEE Transactions on Applied Superconductivity. 21, 3 PART 2, p. 2241-2244 4 p., 5617305.

Research output: Contribution to journalArticle

2 Citations (Scopus)

Evaluation of pulsed-field magnetization on a superconducting bulk magnet system using a 13 K refrigerator

Yokoyama, K., Oka, T. & Noto, K., 2011 Jun 1, In : IEEE Transactions on Applied Superconductivity. 21, 3 PART 2, p. 1657-1660 4 p., 5624613.

Research output: Contribution to journalArticle

5 Citations (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 Jun 1, In : IEEE Transactions on Applied Superconductivity. 21, 3 PART 3, p. 3285-3288 4 p., 5613958.

Research output: Contribution to journalArticle

5 Citations (Scopus)

Improvement of a magnetization method on a small-size superconducting bulk magnet system

Yokoyama, K., Oka, T. & Noto, K., 2011 Nov 1, In : Physica C: Superconductivity and its applications. 471, 21-22, p. 901-904 4 p.

Research output: Contribution to journalArticle

5 Citations (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 Jun 1, In : IEEE Transactions on Applied Superconductivity. 21, 3 PART 3, p. 3325-3328 4 p., 5621862.

Research output: Contribution to journalArticle

6 Citations (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 Nov 1, In : Physica C: Superconductivity and its applications. 471, 21-22, p. 1506-1510 5 p.

Research output: Contribution to journalArticle

1 Citation (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 Jun 1, In : IEEE Transactions on Applied Superconductivity. 21, 3 PART 3, p. 3356-3359 4 p., 5658131.

Research output: Contribution to journalArticle

13 Citations (Scopus)

Prototype of SC inverter

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

Research output: Contribution to journalArticle

1 Citation (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 Jun 25, In : IEEE Transactions on Applied Superconductivity. 22, 3, 4705004.

Research output: Contribution to journalArticle

7 Citations (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 Jun 25, In : IEEE Transactions on Applied Superconductivity. 22, 3, 4704804.

Research output: Contribution to journalArticle

2 Citations (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 Jun 25, In : IEEE Transactions on Applied Superconductivity. 22, 3, 6101562.

Research output: Contribution to journalArticle

6 Citations (Scopus)

Magnetizing of permanent magnets using HTS bulk magnets

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

Research output: Contribution to journalArticle

2 Citations (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 Jun 25, In : IEEE Transactions on Applied Superconductivity. 22, 3, 4704904.

Research output: Contribution to journalArticle

3 Citations (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 Jun 25, In : IEEE Transactions on Applied Superconductivity. 22, 3, 5200504.

Research output: Contribution to journalArticle

12 Citations (Scopus)

Pulsed-field magnetization of a superconducting bulk magnet after field cooling using a permanent magnet

Yokoyama, K., Oka, T. & Noto, K., 2012 Jun 25, In : IEEE Transactions on Applied Superconductivity. 22, 3, 6094195.

Research output: Contribution to journalArticle

2013

Development and test of model apparatus of non-contact spin processor for photo mask production applying radial-type superconducting magnetic bearing

Saito, K., Fukui, S., Maezawa, M., Ogawa, J., Oka, T. & Sato, T., 2013 Jan 15, In : Physica C: Superconductivity and its applications. 484, p. 321-324 4 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)

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

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

Research output: Contribution to journalArticle

3 Citations (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 May 6, In : Physica C: Superconductivity and its applications. 494, p. 46-49 4 p.

Research output: Contribution to journalArticle

5 Citations (Scopus)