Microwave Synthesis of Fullerene-Doped MgB2

被引：16

作者：

Plapcianu, C. ^{[1
,2
,3
,4
]}

Agostino, A. ^{[4
]}

Badica, P. ^{[1
]}

Aldica, G. V. ^{[1
,2
,3
]}

Bonometti, E. ^{[4
]}

Ieluzzi, G. ^{[4
]}

Popa, S. ^{[1
]}

Truccato, M. ^{[2
,3
]}

Cagliero, S. ^{[2
,3
,4
]}

Sakka, Y. ^{[5
]}

Vasylkiv, O. ^{[5
]}

Vidu, R. ^{[6
]}

机构：

[1] Natl Inst Mat Phys, Magurele 077125, Ilfov, Romania

[2] Univ Turin, CNISM, Dept Phys, I-10125 Turin, Italy

[3] Univ Turin, NIS Ctr Excellence, Dept Phys, I-10125 Turin, Italy

[4] Univ Turin, NIS Ctr Excellence, Dept Chem, I-10125 Turin, Italy

[5] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050051, Japan

[6] Univ Calif Davis, Davis, CA 95616 USA

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2012年 / 51卷 / 34期

关键词：

SUPERCONDUCTOR MGB2; ELECTRIC-FIELD; TEMPERATURE; MAGNETIZATION; RELAXATION;

D O I：

10.1021/ie3005429

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Unconventional in situ synthesis of MgB2 undoped and doped with fullerene (C-60) was performed by using a single-mode microwave (MW) furnace. Structural properties suggested that C substitutes for B in the crystal lattice of MgB2, while the J(c) showed typical enhancement at high magnetic fields when C chemical doping occurred. This behavior was similar to published results for another field-activated unconventional method of processing, i.e., spark plasma sintering, and it was opposite to the conventional powder-in-tube method for which chemical substitution was not realized when using addition of C-60. Certain morphologically unique features such as the occurrence of needlelike grains were revealed in the MW samples. Our MW samples showed higher relative density (<= 83%) than previously reported data. Magnetic relaxation experiments suggested the presence of microscopic flux jumps in the MW samples, while macroscopic flux jumps were not observed.

引用

页码：11005 / 11010

页数：6

共 23 条

[1] Carbon influence in the synthesis of MgB2 by a microwave method [J].

Agostino, A ;

Bonometti, E ;

Volpe, P ;

Truccato, M ;

Manfredotti, C ;

Olivero, P ;

Paolini, C ;

Rinaudo, G ;

Gozzelino, L .

INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 2003, 17 (4-6) :773-778

[2] Na substitution effects on MgB2 synthesized with a microwave-assisted technique [J].

Agostino, Angelo ;

Panetta, Marco ;

Volpe, Paolo ;

Truccato, Marco ;

Cagliero, Stefano ;

Gozzelino, Laura ;

Gerbaldo, Roberto ;

Ghigo, Gianluca ;

Laviano, Francesco ;

Lopardo, Giuseppina ;

Minetti, Bruno .

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 2007, 17 (02) :2774-2777

[3] MAGNETIZATION OF HIGH-FIELD SUPERCONDUCTORS [J].

BEAN, CP .

REVIEWS OF MODERN PHYSICS, 1964, 36 (1P1) :31-+

[4] Peculiarities of the neck growth process during initial stage of spark-plasma, microwave and conventional sintering of WC spheres [J].

Demirskyi, Dmytro ;

Borodianska, Hanna ;

Agrawal, Dinesh ;

Ragulya, Andrey ;

Sakka, Yoshio ;

Vasylkiv, Oleg .

JOURNAL OF ALLOYS AND COMPOUNDS, 2012, 523 :1-10

[5] Dendritic and uniform flux jumps in superconducting films [J].

Denisov, DV ;

Rakhmanov, AL ;

Shantsev, DV ;

Galperin, YM ;

Johansen, TH .

PHYSICAL REVIEW B, 2006, 73 (01)

[6] Rapid preparation of MgB2 superconductor using hybrid microwave synthesis [J].

Dong, C ;

Guo, J ;

Fu, GC ;

Yang, LH ;

Chen, H .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2004, 17 (12) :L55-L57

[7] Mechanism of enhancement in electromagnetic properties of MgB2 by nano SiC doping (vol 98, art no 097002, 2007) [J].

Dou, S. X. ;

Shcherbakova, O. ;

Yeoh, W. K. ;

Kim, J. H. ;

Soltanian, S. ;

Wang, X. L. ;

Senatore, C. ;

Flukiger, R. ;

Dhalle, M. ;

Husnjak, O. ;

Babic, E. .

PHYSICAL REVIEW LETTERS, 2007, 98 (13)

[8] Enhancement of the critical current density and flux pinning of MgB2 superconductor by nanoparticle SIC doping [J].

Dou, SX ;

Soltanian, S ;

Horvat, J ;

Wang, XL ;

Zhou, SH ;

Ionescu, M ;

Liu, HK ;

Munroe, P ;

Tomsic, M .

APPLIED PHYSICS LETTERS, 2002, 81 (18) :3419-3421

[9] MgB2 reactive sintering from the elements [J].

Giunchi, G ;

Ceresara, S ;

Ripamonti, G ;

Chiarelli, S ;

Spadoni, M .

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 2003, 13 (02) :3060-3063

[10] ANISOTROPIC CRITICAL CURRENTS IN BA2YCU3O7 ANALYZED USING AN EXTENDED BEAN MODEL [J].

GYORGY, EM ;

VANDOVER, RB ;

JACKSON, KA ;

SCHNEEMEYER, LF ;

WASZCZAK, JV .

APPLIED PHYSICS LETTERS, 1989, 55 (03) :283-285

← 1 2 3 →