DIRECT CONVERSION OF SUPERCONDUCTING Y2BA4CU7O15-DELTA FROM YBA2CU3O7-X AT ATMOSPHERIC-PRESSURE IN AN O-2 AMBIENT

被引：2

作者：

LIANG, JM ^{[1
]}

CHEN, LJ ^{[1
]}

机构：

[1] IND TECHNOL RES INST,MAT RES LABS,HSINCHU,TAIWAN

来源：

APPLIED PHYSICS LETTERS | 1990年 / 57卷 / 20期

关键词：

D O I：

10.1063/1.104157

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Direct conversion of superconducting Y2Ba4Cu 7O15-δ (Y-247) from YBa2Cu 3O7-x (Y-123) was achieved at atmospheric pressure. The Y-247 samples were synthesized by the reactions of Y-123 and Cu-(NO 3)2 at 860°C in an O2 ambient. The results strongly suggest that Y-247 is a thermodynamically more stable phase than Y-123 at the atmospheric pressure. The conversion also provides a novel and simple route to synthesize the Y-247 compound.

引用

页码：2142 / 2144

页数：3

共 7 条

[1] STRUCTURE DETERMINATION OF THE NEW HIGH-TEMPERATURE SUPERCONDUCTOR Y2BA4CU7O14+X
BORDET, P
CHAILLOUT, C
CHENAVAS, J
HODEAU, JL
MAREZIO, M
KARPINSKI, J
KALDIS, E
[J]. NATURE, 1988, 334 (6183) : 596 - 598
[2] PHASE-DIAGRAMS OF YBA2CU4O8 AND YBA2CU3.5O7.5 IN THE PRESSURE RANGE 1 BAR LESS-THAN-OR-EQUAL-TO PO2 LESS-THAN-OR-EQUAL-TO 3000 BAR
KARPINSKI, J
RUSIECKI, S
KALDIS, E
BUCHER, B
JILEK, E
[J]. PHYSICA C, 1989, 160 (5-6): : 449 - 457
[3] KARPINSKI J, 1988, NATURE, V336, P550
[4] STABILITY OF 124-SUPERCONDUCTOR, 123-SUPERCONDUCTOR, AND 247-SUPERCONDUCTOR
MORRIS, DE
ASMAR, NG
NICKEL, JH
SID, RL
WEI, JYT
POST, JE
[J]. PHYSICA C, 1989, 159 (03): : 287 - 294
[5] SUPERCONDUCTING PROPERTIES AND FORMATION OF YB2BA4CU7O14-X
OTTO, A
VANDERSANDE, JB
[J]. PHYSICA C, 1989, 160 (3-4): : 352 - 360
[6] BULK SUPERCONDUCTING Y2BA4CU7O15-DELTA AND YBA2CU4O8 PREPARED IN OXYGEN AT 1-ATM
POOKE, DM
BUCKLEY, RG
PRESLAND, MR
TALLON, JL
[J]. PHYSICAL REVIEW B, 1990, 41 (10): : 6616 - 6620
[7] SUPERCONDUCTIVITY AT 93-K IN A NEW MIXED-PHASE Y-BA-CU-O COMPOUND SYSTEM AT AMBIENT PRESSURE
WU, MK
ASHBURN, JR
TORNG, CJ
HOR, PH
MENG, RL
GAO, L
HUANG, ZJ
WANG, YQ
CHU, CW
[J]. PHYSICAL REVIEW LETTERS, 1987, 58 (09) : 908 - 910

← 1 →