Microstructures and superconducting properties in Ti-doped MgB2/Ta/Cu tape

B. Q. Fu; Y. Feng; Y. Zhao; A. K. Pradhan; C. H. Cheng; P. Ji; X. H. Liu; C. F. Liu; G. Yan; L. Zhou

doi:10.1016/S0921-4534(02)02188-3

Microstructures and superconducting properties in Ti-doped MgB₂/Ta/Cu tape

B. Q. Fu, Y. Feng, Y. Zhao, A. K. Pradhan, C. H. Cheng, P. Ji, X. H. Liu, C. F. Liu, G. Yan, L. Zhou

Research output: Contribution to journal › Conference article › peer-review

10 Scopus citations

Abstract

We fabricated MgB₂/Ta/Cu tapes with and without Ti-doping through the in situ powder-in-tube method and studied the phase composition, microstructure and superconducting properties by XRD, SEM and SQUID magnetometer. The results show that the critical temperature of Ti-doped MgB₂/Ta/Cu tape is around 38 K. The high magnetic critical current density of 1.5×10⁶ A/cm² (10 K, self-field) and 9.3×10⁵ A/cm² (20 K, self-field) were obtained in this sample, which is much higher than MgB₂/Ta/Cu tapes without Ti-doping. The microstructure observations indicate that the grain size of MgB₂ is much reduced by Ti-doping and the density of Ti-doped tape is higher, which may enhance J_c of MgB₂ tapes.

Original language	English
Pages (from-to)	659-662
Number of pages	4
Journal	Physica C: Superconductivity and its Applications
Volume	386
DOIs	https://doi.org/10.1016/S0921-4534(02)02188-3
State	Published - 15 Apr 2003
Externally published	Yes
Event	ICMC 2002 - Xi an, China Duration: 16 Jun 2002 → 20 Jun 2002

Keywords

Critical current density
Doping
MgB

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10.1016/S0921-4534(02)02188-3

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title = "Microstructures and superconducting properties in Ti-doped MgB2/Ta/Cu tape",

abstract = "We fabricated MgB2/Ta/Cu tapes with and without Ti-doping through the in situ powder-in-tube method and studied the phase composition, microstructure and superconducting properties by XRD, SEM and SQUID magnetometer. The results show that the critical temperature of Ti-doped MgB2/Ta/Cu tape is around 38 K. The high magnetic critical current density of 1.5×106 A/cm2 (10 K, self-field) and 9.3×105 A/cm2 (20 K, self-field) were obtained in this sample, which is much higher than MgB2/Ta/Cu tapes without Ti-doping. The microstructure observations indicate that the grain size of MgB2 is much reduced by Ti-doping and the density of Ti-doped tape is higher, which may enhance Jc of MgB2 tapes.",

keywords = "Critical current density, Doping, MgB",

author = "Fu, {B. Q.} and Y. Feng and Y. Zhao and Pradhan, {A. K.} and Cheng, {C. H.} and P. Ji and Liu, {X. H.} and Liu, {C. F.} and G. Yan and L. Zhou",

year = "2003",

month = apr,

day = "15",

doi = "10.1016/S0921-4534(02)02188-3",

language = "英语",

volume = "386",

pages = "659--662",

journal = "Physica C: Superconductivity and its Applications",

issn = "0921-4534",

publisher = "Elsevier B.V.",

note = "ICMC 2002 ; Conference date: 16-06-2002 Through 20-06-2002",

}

TY - JOUR

T1 - Microstructures and superconducting properties in Ti-doped MgB2/Ta/Cu tape

AU - Fu, B. Q.

AU - Feng, Y.

AU - Zhao, Y.

AU - Pradhan, A. K.

AU - Cheng, C. H.

AU - Ji, P.

AU - Liu, X. H.

AU - Liu, C. F.

AU - Yan, G.

AU - Zhou, L.

PY - 2003/4/15

Y1 - 2003/4/15

N2 - We fabricated MgB2/Ta/Cu tapes with and without Ti-doping through the in situ powder-in-tube method and studied the phase composition, microstructure and superconducting properties by XRD, SEM and SQUID magnetometer. The results show that the critical temperature of Ti-doped MgB2/Ta/Cu tape is around 38 K. The high magnetic critical current density of 1.5×106 A/cm2 (10 K, self-field) and 9.3×105 A/cm2 (20 K, self-field) were obtained in this sample, which is much higher than MgB2/Ta/Cu tapes without Ti-doping. The microstructure observations indicate that the grain size of MgB2 is much reduced by Ti-doping and the density of Ti-doped tape is higher, which may enhance Jc of MgB2 tapes.

AB - We fabricated MgB2/Ta/Cu tapes with and without Ti-doping through the in situ powder-in-tube method and studied the phase composition, microstructure and superconducting properties by XRD, SEM and SQUID magnetometer. The results show that the critical temperature of Ti-doped MgB2/Ta/Cu tape is around 38 K. The high magnetic critical current density of 1.5×106 A/cm2 (10 K, self-field) and 9.3×105 A/cm2 (20 K, self-field) were obtained in this sample, which is much higher than MgB2/Ta/Cu tapes without Ti-doping. The microstructure observations indicate that the grain size of MgB2 is much reduced by Ti-doping and the density of Ti-doped tape is higher, which may enhance Jc of MgB2 tapes.

KW - Critical current density

KW - Doping

KW - MgB

UR - http://www.scopus.com/inward/record.url?scp=0037445639&partnerID=8YFLogxK

U2 - 10.1016/S0921-4534(02)02188-3

DO - 10.1016/S0921-4534(02)02188-3

M3 - 会议文章

AN - SCOPUS:0037445639

SN - 0921-4534

VL - 386

SP - 659

EP - 662

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

T2 - ICMC 2002

Y2 - 16 June 2002 through 20 June 2002

ER -

Microstructures and superconducting properties in Ti-doped MgB₂/Ta/Cu tape

Abstract

Keywords

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