Enhancement of trapped field and total trapped flux on GdBaCuO bulk by the MMPSC plus IMRA method

被引：25

作者：

Fujishiro, Hiroyuki ^{[1
]}

Hiyama, Takuya ^{[1
]}

Naito, Tomoyuki ^{[1
]}

Yanagi, Yousuke ^{[2
]}

Itoh, Yoshitaka ^{[2
]}

机构：

[1] Iwate Univ, Fac Engn, Morioka, Iwate 0208551, Japan

[2] IMRA Mat R&D Co Ltd, Kariya, Aichi 4480032, Japan

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2009年 / 22卷 / 09期

关键词：

MAGNETIC-FIELD; TEMPERATURE RISE; HTSC BULK; SUPERCONDUCTOR; SYSTEM;

D O I：

10.1088/0953-2048/22/9/095006

中图分类号：

O59 [应用物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

The trapped field B(T)(P)(z) and the total trapped flux Phi(T)(z) as a function of the distance z from the bulk surface have been measured on a GdBaCuO superconducting bulk of 45 mm in diameter, which was magnetized by a sequential pulsed field application (SPA) method, a modified multi-pulse technique with stepwise cooling (MMPSC), and a subsequent iterative magnetizing operation with gradually reduced pulse field amplitude (IMRA). A trapped field of B(T)(P) = 3.10 T was realized by the MMPSC method, which was higher than that attained by SPA (B(T)(P) = 2.35 T). Phi(T) (0.5 mm), which was 1.64 mWb after the MMPSC method, was enhanced by about 53%, to 2.51 mWb, by the subsequent IMRA method due to the additional flux trapping. The MMPSC method combined with the IMRA process (MMPSC + IMRA) is an effective and promising pulse field magnetizing technique to enhance both B(T)(P) and Phi(T) on any superconducting bulks.

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页数：6

相关论文

共 13 条

[1]

Trapped field characteristics on φ65 mm GdBaCuO bulk by modified multi-pulse technique with stepwise cooling (MMPSC) [J].

Fujishiro, H. ;

Tateiwa, T. ;

Kakehata, K. ;

Hiyama, T. ;

Naito, T. ;

Yanagi, Y. .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2008, 468 (15-20) :1477-1480

[2]

Importance of initial "M-shaped" trapped field profile in a two-stage pulse field magnetization (MMPSC) method [J].

Fujishiro, H. ;

Hiyama, T. ;

Tateiwa, T. ;

Yanagi, Y. ;

Oka, T. .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2007, 463 :394-397

[3]

Effect of metal ring setting outside HTSC bulk disk on trapped field and temperature rise in pulse field magnetizing [J].

Fujishiro, H ;

Yokoyama, K ;

Kaneyama, M ;

Oka, T ;

Noto, K .

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 2005, 15 (02) :3762-3765

[4]

Record-high trapped magnetic field by pulse field magnetization using GdBaCuO bulk superconductor [J].

Fujishiro, H ;

Kaneyama, M ;

Tateiwa, T ;

Oka, T .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 2005, 44 (37-41) :L1221-L1224

[5]

Flux motion studies by means of temperature measurement in magnetizing processes for HTSC bulks [J].

Fujishiro, H ;

Oka, T ;

Yokoyama, K ;

Kaneyama, M ;

Noto, K .

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 2004, 14 (02) :1054-1057

[6]

Temperature rise in an Sm-based bulk superconductor after applying iterative pulse fields [J].

Fujishiro, H ;

Yokoyama, K ;

Oka, T ;

Noto, K .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2004, 17 (01) :51-57

[7]

Enhancement of trapped field and total trapped flux on high temperature bulk superconductor by a new pulse-field magnetization method [J].

Fujishiro, Hiroyuki ;

Tateiwa, Tatsuya ;

Hiyama, Takuya .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 2007, 46 (7A) :4108-4112

[8]

Higher trapped field over 5 T on HTSC bulk by modified pulse field magnetizing [J].

Fujishiro, Hiroyuki ;

Tateiwa, Tatsuya ;

Fujiwara, Atsushi ;

Oka, Tetsuo ;

Hayashi, Hidemi .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2006, 445 (334-338) :334-338

[9]

Study on a mobile-type magnetic separator applying high-Tc bulk superconductors [J].

Hayashi, H ;

Tsutsumi, K ;

Saho, N ;

Nishizima, N ;

Asano, K .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2003, 392 :745-748

[10]

Development of a synchronous motor with Gd-Ba-Cu-O bulk superconductors as pole-field magnets for propulsion system [J].

Miki, M. ;

Tokura, S. ;

Hayakawa, H. ;

Inami, H. ;

Kitano, M. ;

Matsuzaki, H. ;

Kimura, Y. ;

Ohtani, I. ;

Morita, E. ;

Ogata, H. ;

Izumi, M. ;

Sugimoto, H. ;

Ida, T. .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2006, 19 (07) :S494-S499