X-RAY-INVESTIGATIONS OF Y1BA2CU4O8 UNDER HIGH-PRESSURE

被引：55

作者：

LUDWIG, HA

FIETZ, WH

DIETRICH, MR

WUHL, H

KARPINSKI, J

KALDIS, E

RUSIECKI, S

机构：

[1] KERNFORSCHUNGSZENTRUM KARLSRUHE GMBH,INST TECH PHYS,W-7500 KARLSRUHE 1,GERMANY

[2] SWISS FED INST TECHNOL,FESTKORPERPHYS LAB,CH-8093 ZURICH,SWITZERLAND

来源：

PHYSICA C | 1990年 / 167卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(90)90351-E

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The lattice parameters of the high temperature superconductor (HTSc) Y1Ba2Cu4O8 with Tc=80 K have been investigated in a pressure range of 0 to 25 GPa and at temperatures between 30 and 301 K. The linear compressibility in the b-axis direction of 1.0x10-3 GPa-1 is found to be quite low, compared to the very high linear compressibilities in the a-axis direction of 2.8x10-3 GPa-1 and in the c-axis direction of 4.5x10-3 GPa-1. The resulting bulk moduli of B=112 GPa at 301 K and B=122 GPa at 30 K are quite low compared with other HTSc materials. This strong anisotropy in all three lattice directions has not been observed in other HTSc materials so far. Within the investigated pressure and temperature range no further anomalies could be observed. © 1990.

引用

页码：335 / 338

页数：4

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