The hydrogen absorption properties and magnetocaloric effect of La 0.8Ce0.2(Fe1-xMnx) 11.5Si1.5Hy

Chaolun Wang; Yi Long; Tao Ma; Bin Fu; Rongchang Ye; Yongqin Chang; Fengxia Hu; Jun Shen

doi:10.1063/1.3549560

The hydrogen absorption properties and magnetocaloric effect of La _0.8Ce_0.2(Fe_1-xMn_x) _11.5Si_1.5H_y

Chaolun Wang
, Yi Long^*
, Tao Ma
, Bin Fu
, Rongchang Ye
, Yongqin Chang
, Fengxia Hu
, Jun Shen

^*此作品的通讯作者

University of Science and Technology Beijing
CAS - Institute of Physics

科研成果: 期刊稿件 › 文章 › 同行评审

21 引用（Scopus）

摘要

The effect of hydrogenating process on the homogeneity of hydrogen absorption in the La_0.8Ce_0.2 (Fe_1-xMn _x)_11.5Si_1.5 compounds was investigated. It is attractive that the distribution of hydrogen atoms in the compounds becomes more uniform with increasing hydrogen pressure and annealing temperature. Homogeneous hydrides of La_0.8Ce_0.2(Fe _0.985Mn_0.015)_11.5Si_1.5 were obtained by annealing them at the temperature of 773 K and under the hydrogen atmosphere of 0.5 MPa. With changes of Mn content, the Curie temperatures (T_C) of the hydrides of La_0.8Ce_0.2 (Fe_1-xMn _x)_11.5Si_1.5 can be adjusted in the room temperature range from 279 to 312 K. Large magnetic entropy changes due to the itinerant-electron metamagnetic transition are obtained in the room temperature range for the hydrides of La_0.8Ce_0.2(Fe _1-xMn_x)_11.5Si_1.5.

源语言	英语
期刊论文编号	07A910
期刊	Journal of Applied Physics
卷	109
期	7
DOI	https://doi.org/10.1063/1.3549560
出版状态	已出版 - 1 4月 2011
已对外发布	是

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title = "The hydrogen absorption properties and magnetocaloric effect of La 0.8Ce0.2(Fe1-xMnx) 11.5Si1.5Hy",

abstract = "The effect of hydrogenating process on the homogeneity of hydrogen absorption in the La0.8Ce0.2 (Fe1-xMn x)11.5Si1.5 compounds was investigated. It is attractive that the distribution of hydrogen atoms in the compounds becomes more uniform with increasing hydrogen pressure and annealing temperature. Homogeneous hydrides of La0.8Ce0.2(Fe 0.985Mn0.015)11.5Si1.5 were obtained by annealing them at the temperature of 773 K and under the hydrogen atmosphere of 0.5 MPa. With changes of Mn content, the Curie temperatures (TC) of the hydrides of La0.8Ce0.2 (Fe1-xMn x)11.5Si1.5 can be adjusted in the room temperature range from 279 to 312 K. Large magnetic entropy changes due to the itinerant-electron metamagnetic transition are obtained in the room temperature range for the hydrides of La0.8Ce0.2(Fe 1-xMnx)11.5Si1.5.",

author = "Chaolun Wang and Yi Long and Tao Ma and Bin Fu and Rongchang Ye and Yongqin Chang and Fengxia Hu and Jun Shen",

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T1 - The hydrogen absorption properties and magnetocaloric effect of La 0.8Ce0.2(Fe1-xMnx) 11.5Si1.5Hy

AU - Wang, Chaolun

AU - Long, Yi

AU - Ma, Tao

AU - Fu, Bin

AU - Ye, Rongchang

AU - Chang, Yongqin

AU - Hu, Fengxia

AU - Shen, Jun

PY - 2011/4/1

Y1 - 2011/4/1

N2 - The effect of hydrogenating process on the homogeneity of hydrogen absorption in the La0.8Ce0.2 (Fe1-xMn x)11.5Si1.5 compounds was investigated. It is attractive that the distribution of hydrogen atoms in the compounds becomes more uniform with increasing hydrogen pressure and annealing temperature. Homogeneous hydrides of La0.8Ce0.2(Fe 0.985Mn0.015)11.5Si1.5 were obtained by annealing them at the temperature of 773 K and under the hydrogen atmosphere of 0.5 MPa. With changes of Mn content, the Curie temperatures (TC) of the hydrides of La0.8Ce0.2 (Fe1-xMn x)11.5Si1.5 can be adjusted in the room temperature range from 279 to 312 K. Large magnetic entropy changes due to the itinerant-electron metamagnetic transition are obtained in the room temperature range for the hydrides of La0.8Ce0.2(Fe 1-xMnx)11.5Si1.5.

AB - The effect of hydrogenating process on the homogeneity of hydrogen absorption in the La0.8Ce0.2 (Fe1-xMn x)11.5Si1.5 compounds was investigated. It is attractive that the distribution of hydrogen atoms in the compounds becomes more uniform with increasing hydrogen pressure and annealing temperature. Homogeneous hydrides of La0.8Ce0.2(Fe 0.985Mn0.015)11.5Si1.5 were obtained by annealing them at the temperature of 773 K and under the hydrogen atmosphere of 0.5 MPa. With changes of Mn content, the Curie temperatures (TC) of the hydrides of La0.8Ce0.2 (Fe1-xMn x)11.5Si1.5 can be adjusted in the room temperature range from 279 to 312 K. Large magnetic entropy changes due to the itinerant-electron metamagnetic transition are obtained in the room temperature range for the hydrides of La0.8Ce0.2(Fe 1-xMnx)11.5Si1.5.

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VL - 109

JO - Journal of Applied Physics

JF - Journal of Applied Physics

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M1 - 07A910

ER -

The hydrogen absorption properties and magnetocaloric effect of La 0.8Ce0.2(Fe1-xMnx) 11.5Si1.5Hy

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The hydrogen absorption properties and magnetocaloric effect of La _0.8Ce_0.2(Fe_1-xMn_x) _11.5Si_1.5H_y