EFFECTS OF THE ANNEALING CONDITIONS ON THE STRUCTURAL AND SUPERCONDUCTING PROPERTIES OF BI2-XPBXSR2Y0.2CA0.8CU2OZ

被引：9

作者：

CALESTANI, G

SALSI, G

FRANCESCONI, MG

MASINI, R

DIMESSO, L

MIGLIORI, A

ZHANG, XF

VANTENDELOO, G

机构：

[1] CNR,ITM,I-20133 MILAN,ITALY

[2] CNR,IST LAMEL,I-40126 BOLOGNA,ITALY

[3] CNR,CTR STUDIO STRUTTURIST DIFFRATTOMETR,I-43100 PARMA,ITALY

[4] ANTWERP STATE UNIV CTR,EMAT,B-2020 ANTWERP,BELGIUM

来源：

PHYSICA C | 1993年 / 206卷 / 1-2期

关键词：

D O I：

10.1016/0921-4534(93)90698-P

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The effects produced by the annealing in nitrogen atmosphere at relatively low temperatures (400-500-degrees-C) on the structural and superconducting properties of Bi2-xPbxSr2Y0.2Ca0.8Cu2Oz have been investigated. The electrical properties of the examined samples (0.0 less-than-or-equal-to x less-than-or-equal-to 0.4), which are comparable when prepared in air, vary remarkably for similar nitrogen annealing, depending on the lead content of the phase. The disappearance of the superconducting transition (reversible for retreatments in air) was found for x=0 whereas no appreciable variation of T(c) was evidenced for x=0.4, at least for the applied treatments; an intermediate behavior was observed for the x=0.2 sample. The structural changes and the local modulated structure were observed by high-resolution electron microscopy. The effect of lead substitution in stabilizing T(c) is discussed.

引用

页码：33 / 42

页数：10

共 18 条

[1] THE MODULATED STRUCTURE OF BI2SR3-XCAXCU2O8 - A COMMENSURATE MODEL FROM SINGLE-CRYSTAL X-RAY-DIFFRACTION DATA [J].

CALESTANI, G ;

RIZZOLI, C ;

FRANCESCONI, MG ;

ANDREETTI, GD .

PHYSICA C, 1989, 161 (5-6) :598-606

[2] STRUCTURAL MODULATION AND SUPERCONDUCTING PROPERTIES IN (BI,PB)2SR2(Y,CA)CU2OZ [J].

CALESTANI, G ;

FRANCESCONI, MG ;

SALSI, G ;

ANDREETTI, GD ;

MIGLIORI, A .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1992, 197 (3-4) :283-298

[3] ELECTRICAL AND MAGNETIC-PROPERTIES IN BI2SR2CA1-XYXCU2O8+DELTA [J].

FUKUSHIMA, N ;

NIU, H ;

ANDO, K .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1988, 27 (08) :L1432-L1434

[4] HOLE CONCENTRATION AND TC IN BI2SR2CACU2O8+DELTA [J].

GROEN, WA ;

DELEEUW, DM ;

FEINER, LF .

PHYSICA C, 1990, 165 (01) :55-61

[5] A MODEL FOR THE SUPERSTRUCTURE OF BI2SR2CACU2O8.2 [J].

HEWAT, EA ;

CAPPONI, JJ ;

MAREZIO, M .

PHYSICA C, 1989, 157 (03) :502-508

[6]

KAN X, 1990, THESIS U HUSTON

[7] EVIDENCE OF SR-DEFICIENCY IN BI2SR2-ALPHA CA1CU2O8 AND PREPARATION OF STOICHIOMETRIC SEMICONDUCTING BI2SR2CA1CU2O8 [J].

NAGANO, H ;

LIANG, R ;

MATSUNAGA, Y ;

SUGIYAMA, M ;

ITOH, M ;

NAKAMURA, T .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1989, 28 (03) :L364-L367

[8] OXYGEN STOICHIOMETRY - TC CORRELATIONS IN BI2SR2CACU2O8+X [J].

NAMGUNG, C ;

IRVINE, JTS ;

BINKS, JH ;

LACHOWSKI, EE ;

WEST, AR .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 1989, 2 (03) :181-184

[9] X-RAY-ANALYSIS OF THE INCOMMENSURATE MODULATION IN THE 2-2-1-2 BI-SR-CA-CU-O SUPERCONDUCTOR INCLUDING THE OXYGEN-ATOMS [J].

PETRICEK, V ;

GAO, Y ;

LEE, P ;

COPPENS, P .

PHYSICAL REVIEW B, 1990, 42 (01) :387-392

[10] SYNTHESIS AND CHARACTERIZATION OF BI2SR2CACU2O8 WITHOUT EXCESS OXYGEN [J].

PHAM, AQ ;

MAIGNAN, A ;

HERVIEU, M ;

MICHEL, C ;

PROVOST, J ;

RAVEAU, B .

PHYSICA C, 1992, 191 (1-2) :77-84

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