Pulsed field magnetization for GdBaCuO bulk with stronger pinning characteristics

Hiroyuki Fujishiro; Takuya Hiyama; Takashi Miura; Tomoyuki Naito; Shinya Nariki; Naomichi Sakai; Izumi Hirabayashi

doi:10.1109/TASC.2009.2018081

Pulsed field magnetization for GdBaCuO bulk with stronger pinning characteristics

Hiroyuki Fujishiro, Takuya Hiyama, Takashi Miura, Tomoyuki Naito, Shinya Nariki, Naomichi Sakai, Izumi Hirabayashi

研究成果: Article › 査読

31 被引用数 (Scopus)

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The GdBaCuO superconducting bulk with stronger pinning characteristics (B_T = 1.8 T at 77 K by the field cooled magnetization (FCM)) has been magnetized at T_s = 70 - 20 K by the pulsed field magnetization (PFM) techniques; a sequential pulsed-field application (SPA) and a modified multi pulse technique with stepwise cooling (MMPSC). With decreasing T_s, the pinning force Fp increases especially at the growth sector boundaries (GSBs), and then the nonuniformity of the trapped field profile becomes more and more conspicuous on the bulk surface. At low T_s, the SPA technique is not necessarily a suitable technique to enhance the trapped field B _T and the total trapped flux φ_T However, these values can be enhanced by the MMPSC method. The properties of the bulk with stronger pinning characteristics during PFM are discussed.

本文言語	English
論文番号	5067107
ページ（範囲）	3545-3548
ページ数	4
ジャーナル	IEEE Transactions on Applied Superconductivity
巻	19
号	3
DOI	https://doi.org/10.1109/TASC.2009.2018081
出版ステータス	Published - 2009 6月
外部発表	はい

ASJC Scopus subject areas

電子材料、光学材料、および磁性材料
凝縮系物理学
電子工学および電気工学

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10.1109/TASC.2009.2018081

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title = "Pulsed field magnetization for GdBaCuO bulk with stronger pinning characteristics",

abstract = "The GdBaCuO superconducting bulk with stronger pinning characteristics (BT = 1.8 T at 77 K by the field cooled magnetization (FCM)) has been magnetized at Ts = 70 - 20 K by the pulsed field magnetization (PFM) techniques; a sequential pulsed-field application (SPA) and a modified multi pulse technique with stepwise cooling (MMPSC). With decreasing Ts, the pinning force Fp increases especially at the growth sector boundaries (GSBs), and then the nonuniformity of the trapped field profile becomes more and more conspicuous on the bulk surface. At low Ts, the SPA technique is not necessarily a suitable technique to enhance the trapped field B T and the total trapped flux φT However, these values can be enhanced by the MMPSC method. The properties of the bulk with stronger pinning characteristics during PFM are discussed.",

keywords = "MMPSC method, Pinning force, Pulsed field magnetization, Trapped field",

author = "Hiroyuki Fujishiro and Takuya Hiyama and Takashi Miura and Tomoyuki Naito and Shinya Nariki and Naomichi Sakai and Izumi Hirabayashi",

note = "Funding Information: Manuscript received August 16, 2008. First published June 05, 2009; current version published July 15, 2009. This work was supported in part by a Grant-in-Aid for Scientific Research from the Ministry of the Education, Culture, Sports, Science and Technology, Japan 19560003.",

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AU - Fujishiro, Hiroyuki

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AU - Miura, Takashi

AU - Naito, Tomoyuki

AU - Nariki, Shinya

AU - Sakai, Naomichi

AU - Hirabayashi, Izumi

N1 - Funding Information: Manuscript received August 16, 2008. First published June 05, 2009; current version published July 15, 2009. This work was supported in part by a Grant-in-Aid for Scientific Research from the Ministry of the Education, Culture, Sports, Science and Technology, Japan 19560003.

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N2 - The GdBaCuO superconducting bulk with stronger pinning characteristics (BT = 1.8 T at 77 K by the field cooled magnetization (FCM)) has been magnetized at Ts = 70 - 20 K by the pulsed field magnetization (PFM) techniques; a sequential pulsed-field application (SPA) and a modified multi pulse technique with stepwise cooling (MMPSC). With decreasing Ts, the pinning force Fp increases especially at the growth sector boundaries (GSBs), and then the nonuniformity of the trapped field profile becomes more and more conspicuous on the bulk surface. At low Ts, the SPA technique is not necessarily a suitable technique to enhance the trapped field B T and the total trapped flux φT However, these values can be enhanced by the MMPSC method. The properties of the bulk with stronger pinning characteristics during PFM are discussed.

AB - The GdBaCuO superconducting bulk with stronger pinning characteristics (BT = 1.8 T at 77 K by the field cooled magnetization (FCM)) has been magnetized at Ts = 70 - 20 K by the pulsed field magnetization (PFM) techniques; a sequential pulsed-field application (SPA) and a modified multi pulse technique with stepwise cooling (MMPSC). With decreasing Ts, the pinning force Fp increases especially at the growth sector boundaries (GSBs), and then the nonuniformity of the trapped field profile becomes more and more conspicuous on the bulk surface. At low Ts, the SPA technique is not necessarily a suitable technique to enhance the trapped field B T and the total trapped flux φT However, these values can be enhanced by the MMPSC method. The properties of the bulk with stronger pinning characteristics during PFM are discussed.

KW - MMPSC method

KW - Pinning force

KW - Pulsed field magnetization

KW - Trapped field

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Pulsed field magnetization for GdBaCuO bulk with stronger pinning characteristics

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