THERMOGRAVIMETRY AND NEUTRON THERMODIFFRACTOMETRY STUDIES OF THE H-YBA2CU3O7 SYSTEM

被引：23

作者：

FRUCHART, D

SOUBEYROUX, JL

QUI, DT

PIQUE, C

RILLO, C

LERA, F

ORERA, VM

FLOKSTRA, J

BLANK, DHA

机构：

[1] UNIV ZARAGOZA, CSIC, INST CIENCIA MAT ARAGON, E-50009 ZARAGOZA, SPAIN

[2] UNIV TWENTE, DEPT APPL PHYS, 7500 AE ENTSCHEDE, NETHERLANDS

来源：

JOURNAL OF THE LESS-COMMON METALS | 1990年 / 157卷 / 02期

关键词：

D O I：

10.1016/0022-5088(90)90178-M

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The high Tc superconducting oxide YBa2Cu3O7-x reacts with hydrogen gas. Thermogravimetric, X-ray and neutron scattering experiments allow us to propose a two-step type of hydrogen bonding. Firstly, a few hydrogen atoms fill some oxygen vacancies and may favourably modify the electron state, giving rise to a slight increase in the critical temperature. Secondly, after a prolonged heating period, the collapse of the YBa2Cu3O7-x type framework and of superconductivity were observed, and a new, highly hydrogenated material appeared. © 1990.

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页码：233 / 244

页数：12

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