METALLURGY, HRTEM, MAGNETIC-PROPERTIES AND SPECIFIC-HEAT OF TL2BA2CU1O6+DELTA 90 K-SUPERCONDUCTORS OBTAINED BY A NEW PROCESS

被引：18

作者：

OPAGISTE, C

COUACH, M

KHODER, AF

GRAF, T

JUNOD, A

TRISCONE, G

MULLER, J

JONDO, TK

JORDA, JL

ABRAHAM, R

COHENADAD, MT

BURSILL, LA

LECKEL, O

BLANCHIN, MG

机构：

[1] UNIV GENEVA,DEPT PHYS MAT CONDENSEE,CH-1211 GENEVA 4,SWITZERLAND

[2] UNIV LYON 1,PHYS CHIM MINERALE LAB 2,F-69622 VILLEURBANNE,FRANCE

[3] UNIV LYON 1,PHYS MAT LAB,F-69622 VILLEURBANNE,FRANCE

[4] UNIV MELBOURNE,SCH PHYS,PARKVILLE,VIC 3052,AUSTRALIA

来源：

PHYSICA C | 1993年 / 205卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(93)90389-8

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

High-quality Tl2Ba2CuO6+delta (2201) compounds were synthesized using a high-pressure route. Starting from Tl2Ba2O5 and CuO, the reactions yielding either the orthorhombic or the tetragonal (superconducting) phases were carried out under 100 bar of oxygen or argon and helium, respectively. Preferential thallium losses are prevented and high sintering temperatures can be used to obtain pure samples with large 2201 grains. The experiments performed include metallographic examinations, X-ray diffraction, microprobe analysis, plasma emission spectroscopy, HRTEM, AC susceptibility, Meissner field cooling, hysteresis loops, normal-state susceptibility and specific heat measurements.

引用

页码：247 / 258

页数：12