Reduction of hysteresis loss and large magnetocaloric effect in the C- and H-doped La(Fe, Si) 13 compounds around room temperature

H. Zhang; B. G. Shen; Z. Y. Xu; X. Q. Zheng; J. Shen; F. X. Hu; J. R. Sun; Y. Long

doi:10.1063/1.3670608

Reduction of hysteresis loss and large magnetocaloric effect in the C- and H-doped La(Fe, Si) ₁₃ compounds around room temperature

H. Zhang^*
, B. G. Shen
, Z. Y. Xu
, X. Q. Zheng
, J. Shen
, F. X. Hu
, J. R. Sun
, Y. Long

^*Corresponding author for this work

CAS - Institute of Physics
CAS - Technical Institute of Physics and Chemistry
University of Science and Technology Beijing

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

65 Citations (Scopus)

Abstract

The effects of the interstitial C and H atoms on the phase formation, the hysteresis loss, and magnetocaloric effects of the NaZn ₁₃-type La(Fe, Si) ₁₃ compounds are investigated. It is found that the annealing time to obtain a 1:13 structure is significantly reduced from 40 days for LaFe _11.7Si _1.3 to a week for LaFe _11.7Si _1.3C _0.2. The introduction of C and H atoms can adjust Curie temperature to around room temperature and leads to the decrease in magnetic entropy change (δS _M) and magnetic hysteresis loss due to the weakening of itinerant-electron metamagnetic transition. Large -δS _M of 19.0 J/kg K at room temperature without hysteresis loss for LaFe _11.7Si _1.3C _0.2H _1.7 is obtained for a field change of 5 T.

Original language	English
Article number	07A909
Journal	Journal of Applied Physics
Volume	111
Issue number	7
DOIs	https://doi.org/10.1063/1.3670608
Publication status	Published - 1 Apr 2012
Externally published	Yes

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title = "Reduction of hysteresis loss and large magnetocaloric effect in the C- and H-doped La(Fe, Si) 13 compounds around room temperature",

abstract = "The effects of the interstitial C and H atoms on the phase formation, the hysteresis loss, and magnetocaloric effects of the NaZn 13-type La(Fe, Si) 13 compounds are investigated. It is found that the annealing time to obtain a 1:13 structure is significantly reduced from 40 days for LaFe 11.7Si 1.3 to a week for LaFe 11.7Si 1.3C 0.2. The introduction of C and H atoms can adjust Curie temperature to around room temperature and leads to the decrease in magnetic entropy change (δS M) and magnetic hysteresis loss due to the weakening of itinerant-electron metamagnetic transition. Large -δS M of 19.0 J/kg K at room temperature without hysteresis loss for LaFe 11.7Si 1.3C 0.2H 1.7 is obtained for a field change of 5 T.",

author = "H. Zhang and Shen, \{B. G.\} and Xu, \{Z. Y.\} and Zheng, \{X. Q.\} and J. Shen and Hu, \{F. X.\} and Sun, \{J. R.\} and Y. Long",

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doi = "10.1063/1.3670608",

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volume = "111",

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T1 - Reduction of hysteresis loss and large magnetocaloric effect in the C- and H-doped La(Fe, Si) 13 compounds around room temperature

AU - Zhang, H.

AU - Shen, B. G.

AU - Xu, Z. Y.

AU - Zheng, X. Q.

AU - Shen, J.

AU - Hu, F. X.

AU - Sun, J. R.

AU - Long, Y.

PY - 2012/4/1

Y1 - 2012/4/1

N2 - The effects of the interstitial C and H atoms on the phase formation, the hysteresis loss, and magnetocaloric effects of the NaZn 13-type La(Fe, Si) 13 compounds are investigated. It is found that the annealing time to obtain a 1:13 structure is significantly reduced from 40 days for LaFe 11.7Si 1.3 to a week for LaFe 11.7Si 1.3C 0.2. The introduction of C and H atoms can adjust Curie temperature to around room temperature and leads to the decrease in magnetic entropy change (δS M) and magnetic hysteresis loss due to the weakening of itinerant-electron metamagnetic transition. Large -δS M of 19.0 J/kg K at room temperature without hysteresis loss for LaFe 11.7Si 1.3C 0.2H 1.7 is obtained for a field change of 5 T.

AB - The effects of the interstitial C and H atoms on the phase formation, the hysteresis loss, and magnetocaloric effects of the NaZn 13-type La(Fe, Si) 13 compounds are investigated. It is found that the annealing time to obtain a 1:13 structure is significantly reduced from 40 days for LaFe 11.7Si 1.3 to a week for LaFe 11.7Si 1.3C 0.2. The introduction of C and H atoms can adjust Curie temperature to around room temperature and leads to the decrease in magnetic entropy change (δS M) and magnetic hysteresis loss due to the weakening of itinerant-electron metamagnetic transition. Large -δS M of 19.0 J/kg K at room temperature without hysteresis loss for LaFe 11.7Si 1.3C 0.2H 1.7 is obtained for a field change of 5 T.

UR - https://www.scopus.com/pages/publications/84861721228

U2 - 10.1063/1.3670608

DO - 10.1063/1.3670608

M3 - Article

AN - SCOPUS:84861721228

SN - 0021-8979

VL - 111

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 7

M1 - 07A909

ER -

Reduction of hysteresis loss and large magnetocaloric effect in the C- and H-doped La(Fe, Si) ₁₃ compounds around room temperature

Abstract

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