Reversible loading of epitaxial Y(00.1) films with hydrogen

被引：27

作者：

Remhof, A

Song, G

TheisBrohl, K

Zabel, H

机构：

[1] Ruhr-Universität Bochum, Institut für Experimentalphysik/Festkörperphysik

来源：

PHYSICAL REVIEW B | 1997年 / 56卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.56.R2897

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Yttrium can be loaded with hydrogen up to high concentrations causing dramatic structural and electronic changes of the host lattice. We report on the reversibility of hydrogen loading in thin, monocrystalline Y films grown by molecular beam epitaxy on Nb/sapphire substrates. During hydrogen loading, the Y film undergoes structural transitions from the cubic dihydrid phase to the hexagonal trihydrid phase, while the structural coherence is maintained. The transition from YH2 to YH3 occurs at room temperature at a hydrogen pressure of 10 mbar and is completely reversible.

引用

页码：R2897 / R2899

页数：3

共 12 条

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[2]

Alefeld G., 1978, HYDROGEN METALS 2

[3]

Fukai Y, 1993, METAL HYDROGEN SYSTE

[4]

GIESSEN R, 1988, HYDROGEN INTERMETALL, V1