Magnetic field effect on the equilibrium hydrogen pressure for the PrCo5-H system

被引：6

作者：

Yamamoto, I ^{[1
]}

Mizusaki, S ^{[1
]}

Ishikawa, K ^{[1
]}

Ishikawa, F ^{[1
]}

Shimazu, Y ^{[1
]}

Yamaguchi, M ^{[1
]}

机构：

[1] Yokohama Natl Univ, Fac Engn, Dept Phys, Hodogaya Ku, Yokohama, Kanagawa 2408501, Japan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2002年 / 330卷

关键词：

metal-hydrogen systems; hydrogen pressure; magnetic field effects;

D O I：

10.1016/S0925-8388(01)01646-2

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 equilibrium hydrogen pressures in the beta(1) + gamma region of the ferromagnetic hydride PrCo5Hlambda have been investigated as a function of the hydrogen composition x under the influence of magnetic fields up to 5 T at 273.2 K. The logarithmic pressure change is increased linearly with increasing magnetic fields and depends on the hydrogen composition. The value DeltaM(s) (die change in saturation magnetization per desorbed molH) is calculated from the relationship between the pressure change and the magnetic field. The results show a peculiar dependence of the DeltaM(s) on the hydrogen composition. The maximum value of DeltaM(s) of 25 J T-1 molH(-1) at x=4.3 is much larger than that observed in other metal-hydrogen systems. (C) 2002 Published by Elsevier Science B.V.

引用

页码：56 / 58

页数：3

共 6 条

[1]

KUIJPERS FA, 1973, PHILIPS RES REP S2, P43

[2] EFFECT OF A STRONG MAGNETIC-FIELD ON THE CHEMICAL-EQUILIBRIUM OF THE FERROMAGNETIC HYDRIDE HYDROGEN SYSTEM [J].