Inverse isotope effect of ZrMnx (x=1.9 or 2.0)-Q2 (Q=H or D) system

Masanori Hara; Takafumi Yamamoto; Katsuhiko Nishimura; Satoshi Akamaru; Kuniaki Watanabe; Masao Matsuyama

doi:10.1016/j.jpcs.2013.03.023

Inverse isotope effect of ZrMn_x (x=1.9 or 2.0)-Q₂ (Q=H or D) system

Masanori Hara^*, Takafumi Yamamoto, Katsuhiko Nishimura, Satoshi Akamaru, Kuniaki Watanabe, Masao Matsuyama

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Pressure-composition curves of ZrMn_x (x=1.9, 2.0)-Q₂ (Q=H, D) were measured by a volumetric method. An inverse isotope effect of absorption pressure was found for the ZrMn_xQ_y system, i.e. the hydrogen absorption pressure was found to be larger than that of deuterium. On the other hand, the hydrogen desorption pressure was the same as that of deuterium. Thus, an inverse isotope effect merely appears in the absorption pressures. The degree of the inverse isotope effect decreased with increasing temperature. This effect can be explained by the hysteresis factor which is induced by hydrogen isotopes dissolved in ZrMn_1.9 or ZrMn _2.0.

Original language	English
Pages (from-to)	1174-1178
Number of pages	5
Journal	Journal of Physics and Chemistry of Solids
Volume	74
Issue number	8
DOIs	https://doi.org/10.1016/j.jpcs.2013.03.023
State	Published - 2013/08

Keywords

Absorption/desorption isotherms
Hysteresis factor
Inverse isotope effect
ZrMn

ASJC Scopus subject areas

General Chemistry
General Materials Science
Condensed Matter Physics

Access to Document

10.1016/j.jpcs.2013.03.023

Cite this

@article{8c7b1601c6014257830a0201cc9a71ee,

title = "Inverse isotope effect of ZrMnx (x=1.9 or 2.0)-Q2 (Q=H or D) system",

abstract = "Pressure-composition curves of ZrMnx (x=1.9, 2.0)-Q2 (Q=H, D) were measured by a volumetric method. An inverse isotope effect of absorption pressure was found for the ZrMnxQy system, i.e. the hydrogen absorption pressure was found to be larger than that of deuterium. On the other hand, the hydrogen desorption pressure was the same as that of deuterium. Thus, an inverse isotope effect merely appears in the absorption pressures. The degree of the inverse isotope effect decreased with increasing temperature. This effect can be explained by the hysteresis factor which is induced by hydrogen isotopes dissolved in ZrMn1.9 or ZrMn 2.0.",

keywords = "Absorption/desorption isotherms, Hysteresis factor, Inverse isotope effect, ZrMn",

author = "Masanori Hara and Takafumi Yamamoto and Katsuhiko Nishimura and Satoshi Akamaru and Kuniaki Watanabe and Masao Matsuyama",

note = "Funding Information: This research was supported by the Grant-in-Aid for Scientific Research (C) , KAKENHI 23560830 .",

year = "2013",

month = aug,

doi = "10.1016/j.jpcs.2013.03.023",

language = "英語",

volume = "74",

pages = "1174--1178",

journal = "Journal of Physics and Chemistry of Solids",

issn = "0022-3697",

publisher = "Elsevier Ltd.",

number = "8",

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TY - JOUR

T1 - Inverse isotope effect of ZrMnx (x=1.9 or 2.0)-Q2 (Q=H or D) system

AU - Hara, Masanori

AU - Yamamoto, Takafumi

AU - Nishimura, Katsuhiko

AU - Akamaru, Satoshi

AU - Watanabe, Kuniaki

AU - Matsuyama, Masao

N1 - Funding Information: This research was supported by the Grant-in-Aid for Scientific Research (C) , KAKENHI 23560830 .

PY - 2013/8

Y1 - 2013/8

N2 - Pressure-composition curves of ZrMnx (x=1.9, 2.0)-Q2 (Q=H, D) were measured by a volumetric method. An inverse isotope effect of absorption pressure was found for the ZrMnxQy system, i.e. the hydrogen absorption pressure was found to be larger than that of deuterium. On the other hand, the hydrogen desorption pressure was the same as that of deuterium. Thus, an inverse isotope effect merely appears in the absorption pressures. The degree of the inverse isotope effect decreased with increasing temperature. This effect can be explained by the hysteresis factor which is induced by hydrogen isotopes dissolved in ZrMn1.9 or ZrMn 2.0.

AB - Pressure-composition curves of ZrMnx (x=1.9, 2.0)-Q2 (Q=H, D) were measured by a volumetric method. An inverse isotope effect of absorption pressure was found for the ZrMnxQy system, i.e. the hydrogen absorption pressure was found to be larger than that of deuterium. On the other hand, the hydrogen desorption pressure was the same as that of deuterium. Thus, an inverse isotope effect merely appears in the absorption pressures. The degree of the inverse isotope effect decreased with increasing temperature. This effect can be explained by the hysteresis factor which is induced by hydrogen isotopes dissolved in ZrMn1.9 or ZrMn 2.0.

KW - Absorption/desorption isotherms

KW - Hysteresis factor

KW - Inverse isotope effect

KW - ZrMn

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U2 - 10.1016/j.jpcs.2013.03.023

DO - 10.1016/j.jpcs.2013.03.023

M3 - 学術論文

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JO - Journal of Physics and Chemistry of Solids

JF - Journal of Physics and Chemistry of Solids

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