Bi addition effect on Jc-B performance of powder-in-tube processed MgB2 tapes

Xianping Zhang; Ma Yanwei; Zhaoshun Gao; Dongliang Wang; Zhengguang Yu; Satoshi Awaji; Kazuo Watanabe

doi:10.1109/TASC.2007.899490

Bi addition effect on J_c-B performance of powder-in-tube processed MgB₂ tapes

Xianping Zhang, Ma Yanwei, Zhaoshun Gao, Dongliang Wang, Zhengguang Yu, Satoshi Awaji, Kazuo Watanabe

IMR - High Field Laboratory for Superconducting Materials

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

4 Citations (Scopus)

Abstract

MgB₂ tapes with 5 at.% Bi addition were fabricated through the in situ powder-in-tube method. Heat treatment was carried out at 700°C and 800°C for 1 h. The phase, microstructure, superconductivity and flux pinning ability were characterized by XRD, SEM, magnetic and transport measurements. The critical current density J_c and J_c-B performance for the doped and undoped samples are also given. It is found that nano-Bi doping decreased the magnetic field sensitivity of J_c, indicating an improvement of flux pinning. At 4.2 K, 10 T, J_c values of the Bi doped tapes enhanced about 2.5 times compared to that of undoped samples. The mechanism for improved J_c-B performance of Bi-doped MgB₂ tapes is investigated.

Original language	English
Pages (from-to)	2925-2928
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	17
Issue number	2
DOIs	https://doi.org/10.1109/TASC.2007.899490
Publication status	Published - 2007 Jun

Keywords

Critical current property
Doping effect
MgB
Microstructure

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@article{e25cf346be2e435aa337c5fe1d91ed33,

title = "Bi addition effect on Jc-B performance of powder-in-tube processed MgB2 tapes",

abstract = "MgB2 tapes with 5 at.% Bi addition were fabricated through the in situ powder-in-tube method. Heat treatment was carried out at 700°C and 800°C for 1 h. The phase, microstructure, superconductivity and flux pinning ability were characterized by XRD, SEM, magnetic and transport measurements. The critical current density Jc and Jc-B performance for the doped and undoped samples are also given. It is found that nano-Bi doping decreased the magnetic field sensitivity of Jc, indicating an improvement of flux pinning. At 4.2 K, 10 T, Jc values of the Bi doped tapes enhanced about 2.5 times compared to that of undoped samples. The mechanism for improved Jc-B performance of Bi-doped MgB2 tapes is investigated.",

keywords = "Critical current property, Doping effect, MgB, Microstructure",

author = "Xianping Zhang and Ma Yanwei and Zhaoshun Gao and Dongliang Wang and Zhengguang Yu and Satoshi Awaji and Kazuo Watanabe",

note = "Funding Information: Manuscript received August 25, 2006. This work was supported in part by the National Nature Science Foundation of China under Grant Nos. 50472063 and 50377040 and National {\textquoteleft}973{\textquoteright} Program (Grant No. 2006CB601004).",

year = "2007",

month = jun,

doi = "10.1109/TASC.2007.899490",

language = "English",

volume = "17",

pages = "2925--2928",

journal = "IEEE Transactions on Applied Superconductivity",

issn = "1051-8223",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

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TY - JOUR

T1 - Bi addition effect on Jc-B performance of powder-in-tube processed MgB2 tapes

AU - Zhang, Xianping

AU - Yanwei, Ma

AU - Gao, Zhaoshun

AU - Wang, Dongliang

AU - Yu, Zhengguang

AU - Awaji, Satoshi

AU - Watanabe, Kazuo

N1 - Funding Information: Manuscript received August 25, 2006. This work was supported in part by the National Nature Science Foundation of China under Grant Nos. 50472063 and 50377040 and National ‘973’ Program (Grant No. 2006CB601004).

PY - 2007/6

Y1 - 2007/6

N2 - MgB2 tapes with 5 at.% Bi addition were fabricated through the in situ powder-in-tube method. Heat treatment was carried out at 700°C and 800°C for 1 h. The phase, microstructure, superconductivity and flux pinning ability were characterized by XRD, SEM, magnetic and transport measurements. The critical current density Jc and Jc-B performance for the doped and undoped samples are also given. It is found that nano-Bi doping decreased the magnetic field sensitivity of Jc, indicating an improvement of flux pinning. At 4.2 K, 10 T, Jc values of the Bi doped tapes enhanced about 2.5 times compared to that of undoped samples. The mechanism for improved Jc-B performance of Bi-doped MgB2 tapes is investigated.

AB - MgB2 tapes with 5 at.% Bi addition were fabricated through the in situ powder-in-tube method. Heat treatment was carried out at 700°C and 800°C for 1 h. The phase, microstructure, superconductivity and flux pinning ability were characterized by XRD, SEM, magnetic and transport measurements. The critical current density Jc and Jc-B performance for the doped and undoped samples are also given. It is found that nano-Bi doping decreased the magnetic field sensitivity of Jc, indicating an improvement of flux pinning. At 4.2 K, 10 T, Jc values of the Bi doped tapes enhanced about 2.5 times compared to that of undoped samples. The mechanism for improved Jc-B performance of Bi-doped MgB2 tapes is investigated.

KW - Critical current property

KW - Doping effect

KW - MgB

KW - Microstructure

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JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

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ER -

Bi addition effect on J_c-B performance of powder-in-tube processed MgB₂ tapes

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Keywords

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