Estimation of generated heat in pulse field magnetizing for SmBaCuO bulk superconductor

Hiroyuki Fujishiro; Kazuya Yokoyama; Masahiko Kaneyama; Tetsuo Oka; Koshichi Noto

doi:10.1016/j.physc.2004.01.083

Estimation of generated heat in pulse field magnetizing for SmBaCuO bulk superconductor

Hiroyuki Fujishiro, Kazuya Yokoyama, Masahiko Kaneyama, Tetsuo Oka, Koshichi Noto

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

The generated heat Q during the pulse field magnetizing (PFM) has been estimated for a cryo-cooled SmBaCuO bulk superconductor based on the maximum temperature rise ΔT_max and specific heat C(T). Five successive magnetic pulses with a fixed amplitude (B_ex=3.01 T ∼ 5.42 T) are applied and ΔT_max are measured for the various initial temperature T_s between 40 and 70 K. Q has shown characteristic dependences on T_s,B_ex and the pulse number of the successive pulses. The pinning loss (Q_p) and viscous loss (Q _v) have been separated and estimated as a function of T_s and B_ex.

Original language	English
Pages (from-to)	646-650
Number of pages	5
Journal	Physica C: Superconductivity and its applications
Volume	412-414
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physc.2004.01.083
Publication status	Published - 2004 Oct 1
Externally published	Yes

Keywords

Heat generation
Pinning and viscous loss
Pulse field magnetizing
SmBaCuO
Specific heat

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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title = "Estimation of generated heat in pulse field magnetizing for SmBaCuO bulk superconductor",

abstract = "The generated heat Q during the pulse field magnetizing (PFM) has been estimated for a cryo-cooled SmBaCuO bulk superconductor based on the maximum temperature rise ΔTmax and specific heat C(T). Five successive magnetic pulses with a fixed amplitude (Bex=3.01 T ∼ 5.42 T) are applied and ΔTmax are measured for the various initial temperature Ts between 40 and 70 K. Q has shown characteristic dependences on Ts,Bex and the pulse number of the successive pulses. The pinning loss (Qp) and viscous loss (Q v) have been separated and estimated as a function of Ts and Bex.",

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AU - Fujishiro, Hiroyuki

AU - Yokoyama, Kazuya

AU - Kaneyama, Masahiko

AU - Oka, Tetsuo

AU - Noto, Koshichi

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AB - The generated heat Q during the pulse field magnetizing (PFM) has been estimated for a cryo-cooled SmBaCuO bulk superconductor based on the maximum temperature rise ΔTmax and specific heat C(T). Five successive magnetic pulses with a fixed amplitude (Bex=3.01 T ∼ 5.42 T) are applied and ΔTmax are measured for the various initial temperature Ts between 40 and 70 K. Q has shown characteristic dependences on Ts,Bex and the pulse number of the successive pulses. The pinning loss (Qp) and viscous loss (Q v) have been separated and estimated as a function of Ts and Bex.

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