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.
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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 -