Comparative studies of nanoscale SiC whisker and Si/N/C doped MgB 2 taoes

Xianping Zhang; Yanwei Ma; Zhaoshun Gao; Dongliang Wang; Zhengguang Yu; G. Nishijima; K. Watanabe; Jiandong Guo

doi:10.4028/0-87849-432-4.2041

Comparative studies of nanoscale SiC whisker and Si/N/C doped MgB ₂ taoes

Xianping Zhang, Yanwei Ma, Zhaoshun Gao, Dongliang Wang, Zhengguang Yu, G. Nishijima, K. Watanabe, Jiandong Guo

High Field Laboratory for Superconducting Materials

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Fe-sheathed MgB₂ tapes were prepared by the in situ powder-in-tube (PIT) technique using nanoscale Si/N/C and SiC whisker as doping materials, respectively. It is found that the doped tapes exhibited superior field performance and higher critical current (J_C) values than the undoped tapes in the magnetic field up to 12 T. Moreover, the improvement of J_C for the SiC whisker doped samples was more significantly than that in Si/N/C doped tapes, while flux pinning ability enhancements were similar. It is proposed that the difference of impurity content in MgB₂ matrix, which affects the grain connectivity, is responsible for J_C value difference between Si/N/C and SiC whisker doped samples.

Original language	English
Title of host publication	Progress in Light Metals, Aerospace Materials and Superconductors
Publisher	Trans Tech Publications Ltd
Pages	2041-2045
Number of pages	5
Edition	PART 4
ISBN (Print)	0878494324, 9780878494323
DOIs	https://doi.org/10.4028/0-87849-432-4.2041
Publication status	Published - 2007 Jan 1
Event	2006 Beijing International Materials Week, 2006 BIMW - International Conference on Superconducting Materials, ICSM 2006 - Beijing, China Duration: 2006 Jun 25 → 2006 Jun 30

Publication series

Name	Materials Science Forum
Number	PART 4
Volume	546-549
ISSN (Print)	0255-5476
ISSN (Electronic)	1662-9752

Other

Other	2006 Beijing International Materials Week, 2006 BIMW - International Conference on Superconducting Materials, ICSM 2006
Country	China
City	Beijing
Period	06/6/25 → 06/6/30

Keywords

Doping
Mechanism
MgB
Superconductivity

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.4028/0-87849-432-4.2041

Fingerprint Dive into the research topics of 'Comparative studies of nanoscale SiC whisker and Si/N/C doped MgB <sub>2</sub> taoes'. Together they form a unique fingerprint.

Cite this

Zhang, X., Ma, Y., Gao, Z., Wang, D., Yu, Z., Nishijima, G., Watanabe, K., & Guo, J. (2007). Comparative studies of nanoscale SiC whisker and Si/N/C doped MgB ₂ taoes. In Progress in Light Metals, Aerospace Materials and Superconductors (PART 4 ed., pp. 2041-2045). (Materials Science Forum; Vol. 546-549, No. PART 4). Trans Tech Publications Ltd. https://doi.org/10.4028/0-87849-432-4.2041

Comparative studies of nanoscale SiC whisker and Si/N/C doped MgB ₂ taoes. / Zhang, Xianping; Ma, Yanwei; Gao, Zhaoshun; Wang, Dongliang; Yu, Zhengguang; Nishijima, G.; Watanabe, K.; Guo, Jiandong.

Progress in Light Metals, Aerospace Materials and Superconductors. PART 4. ed. Trans Tech Publications Ltd, 2007. p. 2041-2045 (Materials Science Forum; Vol. 546-549, No. PART 4).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Zhang, X, Ma, Y, Gao, Z, Wang, D, Yu, Z, Nishijima, G, Watanabe, K & Guo, J 2007, Comparative studies of nanoscale SiC whisker and Si/N/C doped MgB ₂ taoes. in Progress in Light Metals, Aerospace Materials and Superconductors. PART 4 edn, Materials Science Forum, no. PART 4, vol. 546-549, Trans Tech Publications Ltd, pp. 2041-2045, 2006 Beijing International Materials Week, 2006 BIMW - International Conference on Superconducting Materials, ICSM 2006, Beijing, China, 06/6/25. https://doi.org/10.4028/0-87849-432-4.2041

@inproceedings{7cf9a3fa57234eec9a95488dd7d42af7,

title = "Comparative studies of nanoscale SiC whisker and Si/N/C doped MgB 2 taoes",

abstract = "Fe-sheathed MgB2 tapes were prepared by the in situ powder-in-tube (PIT) technique using nanoscale Si/N/C and SiC whisker as doping materials, respectively. It is found that the doped tapes exhibited superior field performance and higher critical current (JC) values than the undoped tapes in the magnetic field up to 12 T. Moreover, the improvement of JC for the SiC whisker doped samples was more significantly than that in Si/N/C doped tapes, while flux pinning ability enhancements were similar. It is proposed that the difference of impurity content in MgB2 matrix, which affects the grain connectivity, is responsible for JC value difference between Si/N/C and SiC whisker doped samples.",

keywords = "Doping, Mechanism, MgB, Superconductivity",

author = "Xianping Zhang and Yanwei Ma and Zhaoshun Gao and Dongliang Wang and Zhengguang Yu and G. Nishijima and K. Watanabe and Jiandong Guo",

year = "2007",

month = jan,

day = "1",

doi = "10.4028/0-87849-432-4.2041",

language = "English",

isbn = "0878494324",

series = "Materials Science Forum",

publisher = "Trans Tech Publications Ltd",

number = "PART 4",

pages = "2041--2045",

booktitle = "Progress in Light Metals, Aerospace Materials and Superconductors",

edition = "PART 4",

note = "2006 Beijing International Materials Week, 2006 BIMW - International Conference on Superconducting Materials, ICSM 2006 ; Conference date: 25-06-2006 Through 30-06-2006",

}

TY - GEN

T1 - Comparative studies of nanoscale SiC whisker and Si/N/C doped MgB 2 taoes

AU - Zhang, Xianping

AU - Ma, Yanwei

AU - Gao, Zhaoshun

AU - Wang, Dongliang

AU - Yu, Zhengguang

AU - Nishijima, G.

AU - Watanabe, K.

AU - Guo, Jiandong

PY - 2007/1/1

Y1 - 2007/1/1

N2 - Fe-sheathed MgB2 tapes were prepared by the in situ powder-in-tube (PIT) technique using nanoscale Si/N/C and SiC whisker as doping materials, respectively. It is found that the doped tapes exhibited superior field performance and higher critical current (JC) values than the undoped tapes in the magnetic field up to 12 T. Moreover, the improvement of JC for the SiC whisker doped samples was more significantly than that in Si/N/C doped tapes, while flux pinning ability enhancements were similar. It is proposed that the difference of impurity content in MgB2 matrix, which affects the grain connectivity, is responsible for JC value difference between Si/N/C and SiC whisker doped samples.

AB - Fe-sheathed MgB2 tapes were prepared by the in situ powder-in-tube (PIT) technique using nanoscale Si/N/C and SiC whisker as doping materials, respectively. It is found that the doped tapes exhibited superior field performance and higher critical current (JC) values than the undoped tapes in the magnetic field up to 12 T. Moreover, the improvement of JC for the SiC whisker doped samples was more significantly than that in Si/N/C doped tapes, while flux pinning ability enhancements were similar. It is proposed that the difference of impurity content in MgB2 matrix, which affects the grain connectivity, is responsible for JC value difference between Si/N/C and SiC whisker doped samples.

KW - Doping

KW - Mechanism

KW - MgB

KW - Superconductivity

UR - http://www.scopus.com/inward/record.url?scp=38349158366&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=38349158366&partnerID=8YFLogxK

U2 - 10.4028/0-87849-432-4.2041

DO - 10.4028/0-87849-432-4.2041

M3 - Conference contribution

AN - SCOPUS:38349158366

SN - 0878494324

SN - 9780878494323

T3 - Materials Science Forum

SP - 2041

EP - 2045

BT - Progress in Light Metals, Aerospace Materials and Superconductors

PB - Trans Tech Publications Ltd

T2 - 2006 Beijing International Materials Week, 2006 BIMW - International Conference on Superconducting Materials, ICSM 2006

Y2 - 25 June 2006 through 30 June 2006

ER -