Tetsuo Oka

  • 1865 Citations
  • 22 h-Index
1990 …2019
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Research Output 1990 2019

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Conference article
2018

Collecting Ni-Sulfate Compound from Electroless Plating Waste by Magnetic Separation Technique with Use of HTS Bulk Magnets

Oka, T., Sasaki, S., Sasaki, H., Fukui, S., Ogawa, J., Sato, T., Nakano, T., Ooizumi, M., Tsujimura, M. & Yokoyama, K., 2018 Jul 26, In : Journal of Physics: Conference Series. 1054, 1, 012047.

Research output: Contribution to journalConference article

plating
sulfates
magnets
fluids
crystals

Comparison of Trapped Field Characteristic of Bulk Magnet System Using Various Type Refrigerators

Yokoyama, K., Katsuki, A., Miura, A. & Oka, T., 2018 Jul 26, In : Journal of Physics: Conference Series. 1054, 1, 012072.

Research output: Contribution to journalConference article

refrigerators
magnets
cooling
trapped magnetic fields
magnetic fields
2017
1 Citation (Scopus)

Influence of Artificial Defects on Trapped Field Performance in a Superconducting Bulk Magnet

Yokoyama, K., Eranda, K., Zhao, Y., Katsuki, A., Miura, A. & Oka, T., 2017 Jul 26, In : Journal of Physics: Conference Series. 871, 1, 012050.

Research output: Contribution to journalConference article

magnets
sectors
defects
magnetic flux
trapped magnetic fields

Magnetic flux invasion in REBCO bulk magnets with varying pre-magnetized flux distributions in multiple-PFM processes

Oka, T., Hara, K., Takeda, A., Ogawa, J., Fukui, S., Sato, T., Yokoyama, K. & Murakami, A., 2017 Jul 26, In : Journal of Physics: Conference Series. 871, 1, 012049.

Research output: Contribution to journalConference article

pulse frequency modulation
magnetic flux
magnets
heat generation
promotion
1 Citation (Scopus)

Magnetic Separation Using HTS Bulk Magnet for Cs-Bearing Fe precipitates

Oka, T., Ichiju, K., Sasaki, S., Ogawa, J., Fukui, S., Sato, T., Ooizumi, M., Yokoyama, K., Aoki, S. & Ohnishi, N., 2017 Sep 21, In : Journal of Physics: Conference Series. 897, 1, 012024.

Research output: Contribution to journalConference article

precipitates
magnets
incinerators
ashes
magnetic fields
2016
1 Citation (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 Jan 1, In : Physics Procedia. 81, p. 45-48 4 p.

Research output: Contribution to journalConference article

magnets
magnetic fields
poles
magnetic poles
nonuniform magnetic fields
2015
2 Citations (Scopus)

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 Jan 1, In : Physics Procedia. 67, p. 1005-1009 5 p.

Research output: Contribution to journalConference article

magnets
magnetic poles
magnetic fields
iron
nuclear magnetic resonance
2014
4 Citations (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 Jan 1, In : Journal of Physics: Conference Series. 507, PART 1, 012039.

Research output: Contribution to journalConference article

magnetic flux
seeds
trapping
magnets
penetration
2013
3 Citations (Scopus)

Experimental verification of the magnetic flux penetration property and flux flow inhibition effect of a superconducting bulk magnet with small holes

Yokoyama, K., Oka, T., Kondo, N. & Hosaka, S., 2013 Jan 1, In : Physics Procedia. 45, p. 261-264 4 p.

Research output: Contribution to journalConference article

magnetic flux
magnets
penetration
current density
retarding

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 Jan 1, In : Physics Procedia. 58, p. 302-305 4 p.

Research output: Contribution to journalConference article

Open Access
magnets
magnetic flux
time response
superconductivity
flux density
2 Citations (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 Jan 1, In : Physics Procedia. 58, p. 74-77 4 p.

Research output: Contribution to journalConference article

Open Access
seeds
magnets
crystals
penetration
flux density
2012
5 Citations (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 Jan 1, In : Journal of Physics: Conference Series. 400, PART 2, 022089.

Research output: Contribution to journalConference article

voids
magnets
trapping
temperature
refrigerators
2005
6 Citations (Scopus)

Approach from temperature measurement to trapped field enhancement in HTSC bulks by pulse field magnetizing

Fujishiro, H., Yokoyama, K., Kaneyama, M., Ikebe, M., Oka, T. & Noto, K., 2005 Oct 1, In : Physica C: Superconductivity and its Applications. 426-431, I, p. 594-601 8 p.

Research output: Contribution to journalConference article

Temperature measurement
high temperature superconductors
temperature measurement
augmentation
pulses
32 Citations (Scopus)

Generation of strong magnetic field using 60 mmφ superconducting bulk magnet and its application to magnetron sputtering device

Yanagi, Y., Matsuda, T., Hazama, H., Yokouchi, K., Yoshikawa, M., Itoh, Y., Oka, T., Ikuta, H. & Mizutani, U., 2005 Oct 1, In : Physica C: Superconductivity and its Applications. 426-431, I, p. 764-769 6 p.

Research output: Contribution to journalConference article

Magnetron sputtering
Magnets
magnetron sputtering
magnets
Magnetic fields
11 Citations (Scopus)

Temperature changes in a melt-processed YBCO superconductor activated by field cooling magnetizing process

Oka, T., Yokoyama, K., Fujishiro, H., Kaneyama, M. & Noto, K., 2005 Oct 1, In : Physica C: Superconductivity and its Applications. 426-431, I, p. 794-799 6 p.

Research output: Contribution to journalConference article

YBCO superconductors
Superconducting materials
Cooling
cooling
Magnets
10 Citations (Scopus)

Temperature rise and trapped field in a GdBaCuO bulk superconductor cooled down to 10 K after applying pulsed magnetic field

Yokoyama, K., Kaneyama, M., Fujishiro, H., Oka, T. & Noto, K., 2005 Oct 1, In : Physica C: Superconductivity and its Applications. 426-431, I, p. 671-675 5 p.

Research output: Contribution to journalConference article

Superconducting materials
Magnetic fields
Flux pinning
flux pinning
magnetic fields
2003
12 Citations (Scopus)

A 3 T magnetic field generator using melt-processed bulk superconductors as trapped field magnets and its applications

Oka, T., Yokoyama, K., Itoh, Y., Yanagi, Y., Yoshikawa, M., Ikuta, H., Mizutani, U., Okada, H. & Noto, K., 2003 Oct 1, In : Physica C: Superconductivity and its Applications. 392-396, PART 1, p. 709-712 4 p.

Research output: Contribution to journalConference article

magnetic poles
Superconducting materials
Magnets
Poles
magnets
12 Citations (Scopus)

Construction of a strong magnetic field generator with use of melt-processed bulk superconductors

Oka, T., Yokoyama, K., Itoh, Y., Ikuta, H., Mizutani, U., Okada, H., Katagiri, K. & Noto, K., 2003 Jun 1, In : IEEE Transactions on Applied Superconductivity. 13, 2 II, p. 1584-1587 4 p.

Research output: Contribution to journalConference article

Superconducting materials
Magnets
magnets
generators
Magnetic fields
30 Citations (Scopus)

High gradient magnetic separation using superconducting bulk magnets

Yokoyama, K., Oka, T., Okada, H. & Noto, K., 2003 Oct 1, In : Physica C: Superconductivity and its Applications. 392-396, PART 1, p. 739-744 6 p.

Research output: Contribution to journalConference article

Magnetic separation
Magnets
magnetic poles
magnets
Hematite
38 Citations (Scopus)

Solid-liquid magnetic separation using bulk superconducting magnets

Yokoyama, K., Oka, T., Okada, H., Fujine, Y., Chiba, A. & Noto, K., 2003 Jun 1, In : IEEE Transactions on Applied Superconductivity. 13, 2 II, p. 1592-1595 4 p.

Research output: Contribution to journalConference article

Magnetic separation
Superconducting magnets
superconducting magnets
Magnets
Superconducting materials
2001
24 Citations (Scopus)

Melt-processed RE-Ba-Cu-O (RE=Sm, Nd) superconductors for quasi-permanent magnets

Ikuta, H., Hosokawa, T., Ishihara, H., Yoshikawa, M., Yanagi, Y., Itoh, Y., Oka, T. & Mizutani, U., 2001 Mar 1, In : IEEE Transactions on Applied Superconductivity. 11, 1 III, p. 3716-3719 4 p.

Research output: Contribution to journalConference article

Deflection yokes
Magnetic flux
permanent magnets
Permanent magnets
Superconducting materials
2000
27 Citations (Scopus)

Applications of superconducting permanent magnets driven by static and pulsed fields

Mizutani, U., Ikuta, H., Hosokawa, T., Ishihara, H., Tazoe, K., Oka, T., Itoh, Y., Yanagi, Y. & Yoshikawa, M., 2000 Jun 1, In : Superconductor Science and Technology. 13, 6, p. 836-840 5 p.

Research output: Contribution to journalConference article

Superconducting magnets
superconducting magnets
permanent magnets
Permanent magnets
Superconducting materials
56 Citations (Scopus)

Construction of a 2-5 T class superconducting magnetic field generator with use of an Sm123 bulk superconductor and its application to high-magnetic field demanding devices

Oka, T., Itoh, Y., Yanagi, Y., Yoshikawa, M., Ikuta, H. & Mizutani, U., 2000 Jan 1, In : Physica C: Superconductivity and its Applications. 335, 1, p. 101-106 6 p.

Research output: Contribution to journalConference article

Superconducting materials
generators
superconducting magnets
Magnetic fields
permanent magnets
28 Citations (Scopus)

Pulse field magnetization of melt-processed Sm-Ba-Cu-O

Ikuta, H., Ishihara, H., Hosokawa, T., Yanagi, Y., Itoh, Y., Yoshikawa, M., Oka, T. & Mizutani, U., 2000 Jun 1, In : Superconductor Science and Technology. 13, 6, p. 846-849 4 p.

Research output: Contribution to journalConference article

Magnetization
Fluxes
magnetization
pulses
Magnetic flux
18 Citations (Scopus)

Synthesis of c-axis-oriented Sm123 superconductors and their performance as superconducting permanent magnets

Mizutani, U., Mase, A., Tazoe, K., Ikuta, H., Oka, T., Itoh, Y., Yanagi, Y. & Yoshikawa, M., 2000 Jan 1, In : Physica C: Superconductivity and its Applications. 335, 1, p. 92-96 5 p.

Research output: Contribution to journalConference article

Superconducting magnets
superconducting magnets
permanent magnets
Partial pressure
Permanent magnets