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

Research output: Contribution to journal › Article

26 Citations (Scopus)

Abstract

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.

Original language	English
Article number	5067107
Pages (from-to)	3545-3548
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	19
Issue number	3
DOIs	https://doi.org/10.1109/TASC.2009.2018081
Publication status	Published - 2009 Jun

Keywords

MMPSC method
Pinning force
Pulsed field magnetization
Trapped field

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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Fujishiro, H., Hiyama, T., Miura, T., Naito, T., Nariki, S., Sakai, N., & Hirabayashi, I. (2009). Pulsed field magnetization for GdBaCuO bulk with stronger pinning characteristics. IEEE Transactions on Applied Superconductivity, 19(3), 3545-3548. [5067107]. https://doi.org/10.1109/TASC.2009.2018081

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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",

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AU - Fujishiro, Hiroyuki

AU - Hiyama, Takuya

AU - Miura, Takashi

AU - Naito, Tomoyuki

AU - Nariki, Shinya

AU - Sakai, Naomichi

AU - Hirabayashi, Izumi

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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.

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KW - Pulsed field magnetization

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