Magnetic properties of neutron irradiated and doped MgB2 superconductors

U. P. Trociewitz; P. V.P.S.S. Sastry; A. Wyda; K. Crockett; J. Schwartz

doi:10.1109/TASC.2003.812302

Magnetic properties of neutron irradiated and doped MgB₂ superconductors

U. P. Trociewitz
, P. V.P.S.S. Sastry
, A. Wyda
, K. Crockett
, J. Schwartz

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

12 Scopus citations

Abstract

Studies on the effect of neutron irradiation on MgB₂ superconductor showed a systematic lowering of T_c with increasing neutron fluence. The lower T_c made it difficult to observe the marginal enhancement of flux pinning properties in the neutron irradiated MgB₂ powders. Partial substitution of Mg in MgB₂ by Ti, V and Nb yielded pure samples up to 10 at.% doping level. These substitutions had no affect on T_c, which remained constant at 39 K. The effect of doping Mg by Ti, V, and Nb on the flux pinning properties of MgB₂ was investigated by magnetization measurements. Comparison of the magnetization hysteresis loop widths of the undoped and doped samples showed that the V-doped powders had larger hysteresis loop widths compared to undoped samples indicating enhanced flux pinning in the V-doped samples compared to the undoped and Ti- and Nb-doped samples.

Original language	English (US)
Pages (from-to)	3320-3323
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	13
Issue number	2 III
DOIs	https://doi.org/10.1109/TASC.2003.812302
State	Published - Jun 2003
Event	2002 Applied Superconductivity Conference - Houston, TX, United States Duration: Aug 4 2002 → Aug 9 2002

All Science Journal Classification (ASJC) codes

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

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10.1109/TASC.2003.812302

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title = "Magnetic properties of neutron irradiated and doped MgB2 superconductors",

abstract = "Studies on the effect of neutron irradiation on MgB2 superconductor showed a systematic lowering of Tc with increasing neutron fluence. The lower Tc made it difficult to observe the marginal enhancement of flux pinning properties in the neutron irradiated MgB2 powders. Partial substitution of Mg in MgB2 by Ti, V and Nb yielded pure samples up to 10 at.\% doping level. These substitutions had no affect on Tc, which remained constant at 39 K. The effect of doping Mg by Ti, V, and Nb on the flux pinning properties of MgB2 was investigated by magnetization measurements. Comparison of the magnetization hysteresis loop widths of the undoped and doped samples showed that the V-doped powders had larger hysteresis loop widths compared to undoped samples indicating enhanced flux pinning in the V-doped samples compared to the undoped and Ti- and Nb-doped samples.",

author = "Trociewitz, \{U. P.\} and Sastry, \{P. V.P.S.S.\} and A. Wyda and K. Crockett and J. Schwartz",

note = "Funding Information: Manuscript received August 6, 2002. This work was supported in part by the ONR through the Center for Advanced Power Systems and by the NSF through the NHMFL under the Research Experiences for Undergraduates program (REU).; 2002 Applied Superconductivity Conference ; Conference date: 04-08-2002 Through 09-08-2002",

year = "2003",

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doi = "10.1109/TASC.2003.812302",

language = "English (US)",

volume = "13",

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journal = "IEEE Transactions on Applied Superconductivity",

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TY - JOUR

T1 - Magnetic properties of neutron irradiated and doped MgB2 superconductors

AU - Trociewitz, U. P.

AU - Sastry, P. V.P.S.S.

AU - Wyda, A.

AU - Crockett, K.

AU - Schwartz, J.

N1 - Funding Information: Manuscript received August 6, 2002. This work was supported in part by the ONR through the Center for Advanced Power Systems and by the NSF through the NHMFL under the Research Experiences for Undergraduates program (REU).

PY - 2003/6

Y1 - 2003/6

N2 - Studies on the effect of neutron irradiation on MgB2 superconductor showed a systematic lowering of Tc with increasing neutron fluence. The lower Tc made it difficult to observe the marginal enhancement of flux pinning properties in the neutron irradiated MgB2 powders. Partial substitution of Mg in MgB2 by Ti, V and Nb yielded pure samples up to 10 at.% doping level. These substitutions had no affect on Tc, which remained constant at 39 K. The effect of doping Mg by Ti, V, and Nb on the flux pinning properties of MgB2 was investigated by magnetization measurements. Comparison of the magnetization hysteresis loop widths of the undoped and doped samples showed that the V-doped powders had larger hysteresis loop widths compared to undoped samples indicating enhanced flux pinning in the V-doped samples compared to the undoped and Ti- and Nb-doped samples.

AB - Studies on the effect of neutron irradiation on MgB2 superconductor showed a systematic lowering of Tc with increasing neutron fluence. The lower Tc made it difficult to observe the marginal enhancement of flux pinning properties in the neutron irradiated MgB2 powders. Partial substitution of Mg in MgB2 by Ti, V and Nb yielded pure samples up to 10 at.% doping level. These substitutions had no affect on Tc, which remained constant at 39 K. The effect of doping Mg by Ti, V, and Nb on the flux pinning properties of MgB2 was investigated by magnetization measurements. Comparison of the magnetization hysteresis loop widths of the undoped and doped samples showed that the V-doped powders had larger hysteresis loop widths compared to undoped samples indicating enhanced flux pinning in the V-doped samples compared to the undoped and Ti- and Nb-doped samples.

UR - https://www.scopus.com/pages/publications/0042976331

UR - https://www.scopus.com/pages/publications/0042976331#tab=citedBy

U2 - 10.1109/TASC.2003.812302

DO - 10.1109/TASC.2003.812302

M3 - Conference article

AN - SCOPUS:0042976331

SN - 1051-8223

VL - 13

SP - 3320

EP - 3323

JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

IS - 2 III

T2 - 2002 Applied Superconductivity Conference

Y2 - 4 August 2002 through 9 August 2002

ER -

Magnetic properties of neutron irradiated and doped MgB₂ superconductors

Abstract

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