Superconducting MgB2 films via precursor postprocessing approach

被引：118

作者：

Paranthaman, M ^{[1
]}

Cantoni, C ^{[1
]}

Zhai, HY ^{[1
]}

Christen, HM ^{[1
]}

Aytug, T ^{[1
]}

Sathyamurthy, S ^{[1
]}

Specht, ED ^{[1
]}

Thompson, JR ^{[1
]}

Lowndes, DH ^{[1
]}

Kerchner, HR ^{[1
]}

Christen, DK ^{[1
]}

机构：

[1] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

来源：

APPLIED PHYSICS LETTERS | 2001年 / 78卷 / 23期

关键词：

D O I：

10.1063/1.1377323

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Superconducting MgB2 films with T-c=38.6 K were prepared using a precursor-deposition, ex situ postprocessing approach. Precursor films of boron, similar to0.5 mum thick, were deposited onto Al2O3 (102) substrates by electron-beam evaporation; a postanneal at 890 degreesC in the presence of bulk MgB2 and Mg metal produced highly crystalline MgB2 films. X-ray diffraction indicated that the films exhibit some degree of c-axis alignment, but are randomly oriented in plane. Transport current measurements of the superconducting properties show high values of the critical current density and yield an irreversibility line that exceeds that determined by magnetic measurements on bulk polycrystalline materials. (C) 2001 American Institute of Physics.

引用

页码：3669 / 3671

页数：3

共 13 条

[1]

AKIMITSU J, 2001, S TRANS MET OX SEND

[2]

BRINKMAN A, 2001, CONDMAT0102

[3] Boron isotope effect in superconducting MgB2 [J].

Bud'ko, SL ;

Lapertot, G ;

Petrovic, C ;

Cunningham, CE ;

Anderson, N ;

Canfield, PC .

PHYSICAL REVIEW LETTERS, 2001, 86 (09) :1877-1880

[4] Superconductivity in dense MgB2 wires [J].

Canfield, PC ;

Finnemore, DK ;

Bud'ko, SL ;

Ostenson, JE ;

Lapertot, G ;

Cunningham, CE ;

Petrovic, C .

PHYSICAL REVIEW LETTERS, 2001, 86 (11) :2423-2426

[5]

CHRISTEN HM, IN PRESS PHYSICA C

[6]

EOM CB, 2001, CONDMAT0103425

[7] Thermodynamic and transport properties of superconducting Mg10B2 [J].

Finnemore, DK ;

Ostenson, JE ;

Bud'ko, SL ;

Lapertot, G ;

Canfield, PC .

PHYSICAL REVIEW LETTERS, 2001, 86 (11) :2420-2422

[8]

KANG WN, 2001, CONDMAT0103179

[9] Strongly linked current flow in polycrystalline forms of the superconductor MgB2 [J].

Larbalestier, DC ;

Cooley, LD ;

Rikel, MO ;

Polyanskii, AA ;

Jiang, J ;

Patnaik, S ;

Cai, XY ;

Feldmann, DM ;

Gurevich, A ;

Squitieri, AA ;

Naus, MT ;

Eom, CB ;

Hellstrom, EE ;

Cava, RJ ;

Regan, KA ;

Rogado, N ;

Hayward, MA ;

He, T ;

Slusky, JS ;

Khalifah, P ;

Inumaru, K ;

Haas, M .

NATURE, 2001, 410 (6825) :186-189

[10]

MASSALSKI TB, 1990, BINARY ALLOY PHASE D, V1, P499

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