Hydrogenation, structure and magnetic properties of La(Fe 0.91Si0.09)13 hydrides and deuterides

Zhi Cui Wang; Lun Hua He; F. Cuevas; M. Latroche; Jun Shen; Fang Wei Wang

doi:10.1088/1674-1056/20/6/067502

Hydrogenation, structure and magnetic properties of La(Fe _0.91Si_0.09)₁₃ hydrides and deuterides

Zhi Cui Wang, Lun Hua He, F. Cuevas, M. Latroche, Jun Shen, Fang Wei Wang^*

^*Corresponding author for this work

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

10 Citations (Scopus)

Abstract

Hydrogenation, crystal structure and magnetic properties of La(Fe _0.91Si_0.09)₁₃H(D)_y have been studied by pressure-composition isotherms (PCI), X-ray diffraction (XRD), differential scanning calorimetry (DSC) and magnetization measurements. The maximum absorption capacity is found to be 1.9 H(D) atoms per formula unit as a solid solution. All hydrides and deuterides crystallize in the NaZn₁₃-type cubic structure with the lattice parameter increasing linearly with H(D) concentration. The H(D) absorption enhances the Curie temperature significantly. The magnetic entropy change of the highly H-absorbed compound La(Fe _0.91Si_0.09)₁₃H_1.81 reaches ∼26 J/kg·K under a magnetic field change of 5 T near the Curie temperature T_C = 350 K. No observable isotope effect seems to imply that only the magnetovolume effect is responsible for the strong interplay between magnetism and lattice.

Original language	English
Article number	067502
Journal	Chinese Physics B
Volume	20
Issue number	6
DOIs	https://doi.org/10.1088/1674-1056/20/6/067502
Publication status	Published - Jun 2011
Externally published	Yes

Keywords

isotope effect
magnetic entropy change
magnetocaloric effect

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10.1088/1674-1056/20/6/067502

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@article{f5543ff73583409398ebc24789cd4e20,

title = "Hydrogenation, structure and magnetic properties of La(Fe 0.91Si0.09)13 hydrides and deuterides",

abstract = "Hydrogenation, crystal structure and magnetic properties of La(Fe 0.91Si0.09)13H(D)y have been studied by pressure-composition isotherms (PCI), X-ray diffraction (XRD), differential scanning calorimetry (DSC) and magnetization measurements. The maximum absorption capacity is found to be 1.9 H(D) atoms per formula unit as a solid solution. All hydrides and deuterides crystallize in the NaZn13-type cubic structure with the lattice parameter increasing linearly with H(D) concentration. The H(D) absorption enhances the Curie temperature significantly. The magnetic entropy change of the highly H-absorbed compound La(Fe 0.91Si0.09)13H1.81 reaches ∼26 J/kg·K under a magnetic field change of 5 T near the Curie temperature TC = 350 K. No observable isotope effect seems to imply that only the magnetovolume effect is responsible for the strong interplay between magnetism and lattice.",

keywords = "isotope effect, magnetic entropy change, magnetocaloric effect",

author = "Wang, \{Zhi Cui\} and He, \{Lun Hua\} and F. Cuevas and M. Latroche and Jun Shen and Wang, \{Fang Wei\}",

year = "2011",

month = jun,

doi = "10.1088/1674-1056/20/6/067502",

language = "English",

volume = "20",

journal = "Chinese Physics B",

issn = "1674-1056",

publisher = "IOP Publishing Ltd.",

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TY - JOUR

T1 - Hydrogenation, structure and magnetic properties of La(Fe 0.91Si0.09)13 hydrides and deuterides

AU - Wang, Zhi Cui

AU - He, Lun Hua

AU - Cuevas, F.

AU - Latroche, M.

AU - Shen, Jun

AU - Wang, Fang Wei

PY - 2011/6

Y1 - 2011/6

N2 - Hydrogenation, crystal structure and magnetic properties of La(Fe 0.91Si0.09)13H(D)y have been studied by pressure-composition isotherms (PCI), X-ray diffraction (XRD), differential scanning calorimetry (DSC) and magnetization measurements. The maximum absorption capacity is found to be 1.9 H(D) atoms per formula unit as a solid solution. All hydrides and deuterides crystallize in the NaZn13-type cubic structure with the lattice parameter increasing linearly with H(D) concentration. The H(D) absorption enhances the Curie temperature significantly. The magnetic entropy change of the highly H-absorbed compound La(Fe 0.91Si0.09)13H1.81 reaches ∼26 J/kg·K under a magnetic field change of 5 T near the Curie temperature TC = 350 K. No observable isotope effect seems to imply that only the magnetovolume effect is responsible for the strong interplay between magnetism and lattice.

AB - Hydrogenation, crystal structure and magnetic properties of La(Fe 0.91Si0.09)13H(D)y have been studied by pressure-composition isotherms (PCI), X-ray diffraction (XRD), differential scanning calorimetry (DSC) and magnetization measurements. The maximum absorption capacity is found to be 1.9 H(D) atoms per formula unit as a solid solution. All hydrides and deuterides crystallize in the NaZn13-type cubic structure with the lattice parameter increasing linearly with H(D) concentration. The H(D) absorption enhances the Curie temperature significantly. The magnetic entropy change of the highly H-absorbed compound La(Fe 0.91Si0.09)13H1.81 reaches ∼26 J/kg·K under a magnetic field change of 5 T near the Curie temperature TC = 350 K. No observable isotope effect seems to imply that only the magnetovolume effect is responsible for the strong interplay between magnetism and lattice.

KW - isotope effect

KW - magnetic entropy change

KW - magnetocaloric effect

UR - https://www.scopus.com/pages/publications/79958754003

U2 - 10.1088/1674-1056/20/6/067502

DO - 10.1088/1674-1056/20/6/067502

M3 - Article

AN - SCOPUS:79958754003

SN - 1674-1056

VL - 20

JO - Chinese Physics B

JF - Chinese Physics B

IS - 6

M1 - 067502

ER -

Hydrogenation, structure and magnetic properties of La(Fe _0.91Si_0.09)₁₃ hydrides and deuterides

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Keywords

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