PROPERTIES OF A NEW COPPER TERNARY COMPOUND LA2SR6CU8O18-DELTA

被引：22

作者：

FU, WT

XU, Q

VERHEIJEN, AA

VANRUITENBEEK, JM

ZANDBERGEN, HW

DEJONGH, LJ

机构：

[1] LEIDEN STATE UNIV,GORLAEUS LABS,2312 AV LEIDEN,NETHERLANDS

[2] NATL CTR HREM,MAT SCI LAB,2628 AL DELFT,NETHERLANDS

来源：

SOLID STATE COMMUNICATIONS | 1990年 / 73卷 / 04期

关键词：

D O I：

10.1016/0038-1098(90)90738-W

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A new ternary compound La2Sr6Cu8O18-δ has been isolated and characterized by X-ray diffraction and electron diffraction. It crystalizes in a tetragonal unit cell, space group P4212 or P[ovbar|4]21m, with the a-axis related to that of cubic perovskite (ap) by a≈2√2ap, but with the c-axis slightly shorter than ap. The oxygen content determined from TGA was found to vary strongly, depending on the post-annealing conditions. Air-annealed samples (δ≈0.4) show metallic conductivities, however air-quenched samples (δ≈2) are considerabaly less conducting, and show a weak upturn in the resistivity at low temperature. No superconductivity is observed down to 4K. Thermogravimetric analysis, d.c. resistivity and a.c. susceptibility data as a function of temperature are presented, and the structural features are discussed. © 1990.

引用

页码：291 / 295

页数：5

共 15 条

[1] POSSIBLE HIGH-TC SUPERCONDUCTIVITY IN THE BA-LA-CU-O SYSTEM
BEDNORZ, JG
MULLER, KA
[J]. ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1986, 64 (02): : 189 - 193
[2] COMPOUNDS AND PHASE COMPATIBILITIES IN THE SYSTEM LA2O3-SRO-CUO AT 950-DEGREES-C
DELEEUW, DM
MUTSAERS, CAHA
GEELEN, GPJ
LANGEREIS, C
[J]. JOURNAL OF SOLID STATE CHEMISTRY, 1989, 80 (02) : 276 - 285
[3] NEW OXYGENATED PHASES OF TRIVALENT COPPER
DEMAZEAU, G
PARENT, C
POUCHARD, M
HAGENMULLER, P
[J]. MATERIALS RESEARCH BULLETIN, 1972, 7 (09) : 913 - +
[4] AUTOMATIC MUTUAL INDUCTANCE BRIDGE FOR ACCURATE AC SUSCEPTIBILITY MEASUREMENTS FROM 1.2 TO 300 K
DEUTZ, AF
HULSTMAN, R
KRANENBURG, FJ
[J]. REVIEW OF SCIENTIFIC INSTRUMENTS, 1989, 60 (01) : 113 - 120
[5] LA8-XSRXCU8O20 - AN OXYGEN-DEFICIENT PEROVSKITE BUILT OF CUO6, CUO5, AND CUO4 POLYHEDRA
ERRAKHO, L
MICHEL, C
RAVEAU, B
[J]. JOURNAL OF SOLID STATE CHEMISTRY, 1988, 73 (02) : 514 - 519
[6] A SERIES OF OXYGEN-DEFECT PEROVSKITES CONTAINING CU(II) AND CU(III) - THE OXIDES LA3-XLNXBA3 [CU-5-2Y(II) CU-1+2Y(III)] O14+Y
ERRAKHO, L
MICHEL, C
PROVOST, J
RAVEAU, B
[J]. JOURNAL OF SOLID STATE CHEMISTRY, 1981, 37 (02) : 151 - 156
[7] OXYGEN STOICHIOMETRY IN BA2YCU3OX
GALLAGHER, PK
OBRYAN, HM
SUNSHINE, SA
MURPHY, DW
[J]. MATERIALS RESEARCH BULLETIN, 1987, 22 (07) : 995 - 1006
[8] HIGH-FIELD MAGNETISM OF CUO
KONDO, O
ONO, M
SUGIURA, E
SUGIYAMA, K
DATE, M
[J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1988, 57 (10) : 3293 - 3296
[9] RBA2CU3O7-DELTA (R = RARE-EARTH) HIGH-TC MAGNETIC SUPERCONDUCTORS
MAPLE, MB
DALICHAOUCH, Y
FERREIRA, JM
HAKE, RR
LEE, BW
NEUMEIER, JJ
TORIKACHVILI, MS
YANG, KN
ZHOU, H
GUERTIN, RP
KURIC, MV
[J]. PHYSICA B & C, 1987, 148 (1-3): : 155 - 162
[10] THE OXYGEN DEFECT PEROVSKITE BALA4CU5O13.4, A METALLIC CONDUCTOR
MICHEL, C
ERRAKHO, L
RAVEAU, B
[J]. MATERIALS RESEARCH BULLETIN, 1985, 20 (06) : 667 - 671

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