Influence of co-doping on the crystal structure, magnetocaloric properties and elastic moduli of the la(Fe, si)13 compound

Dan Huang; Ronghui Kou; Jianrong Gao; Amanda Haglund; Jiaqiang Yan; Veerle Keppens; David Mandrus; Yang Ren

doi:10.1007/978-3-319-72526-0_17

Influence of co-doping on the crystal structure, magnetocaloric properties and elastic moduli of the la(Fe, si)₁₃ compound

Dan Huang
, Ronghui Kou
, Jianrong Gao
, Amanda Haglund
, Jiaqiang Yan
, Veerle Keppens
, David Mandrus
, Yang Ren

Correlated Electron Materials

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

2 Scopus citations

Abstract

Abstract The La(Fe, Si)₁₃ compound shows a large magnetocaloric effect near room temperature. Partial substitution of Co for Fe can raise its Curie temperature and reduce the thermal hysteresis of its ferromagnetic transition. However, the influence of Co substitution on the crystal structure and magnetocaloric properties of La(Fe, Si)₁₃ is not well understood yet. In this work, we report a comparative study of the crystal structure, magnetocaloric effects and elastic moduli of polycrystalline LaFe_11.5 Si_1.5 and LaCoFe_10.5 Si_1.5 samples using synchrotron radiation X-ray diffraction, magnetic measurements and resonant ultrasound spectroscopy. Compared to the Co-free sample, the Co-doped sample shows a sluggish ferromagnetic transition and reduced volumetric expansion as well as softer elastic moduli at room temperature. The Co-doped sample also shows stronger temperature dependence of Fe-Fe distances in its ferromagnetic state. Such differences between the samples are explained by considering the influence of Co doping on ferromagnetic interactions and lattice entropy.

Original language	English
Title of host publication	TMS 2018 147th Annual Meeting and Exhibition Supplemental Proceedings
Publisher	Springer International Publishing
Pages	181-190
Number of pages	10
ISBN (Print)	9783319725253
DOIs	https://doi.org/10.1007/978-3-319-72526-0_17
State	Published - 2018
Event	147th Annual Meeting and Exhibition of the Minerals, Metals and Materials Society, TMS 2018 - Phoenix, United States Duration: Mar 11 2018 → Mar 15 2018

Publication series

Name	Minerals, Metals and Materials Series
Volume	Part F12
ISSN (Print)	2367-1181
ISSN (Electronic)	2367-1696

Conference

Conference	147th Annual Meeting and Exhibition of the Minerals, Metals and Materials Society, TMS 2018
Country/Territory	United States
City	Phoenix
Period	03/11/18 → 03/15/18

Funding

Acknowledgements This work is financially supported by the National Basic Research Program of China (2012CB619405) and by the National Natural Science Foundation of China (50671024). David Mandrus and Jiaqiang Yan acknowledge support from the National Science Foundation under Grant No. DMR-1410428. The authors thank Michael Koehler for his help in the RUS measurements. Dan Huang and Ronghui Kou thank the China Scholarship Council for granting a CSC fellowship. This research used resources of the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357.

Keywords

Crystal structure
Elastic moduli
La(FeSi)
Magnetocaloric effect

Access to Document

10.1007/978-3-319-72526-0_17

Cite this

Huang, D., Kou, R., Gao, J., Haglund, A., Yan, J., Keppens, V., Mandrus, D., & Ren, Y. (2018). Influence of co-doping on the crystal structure, magnetocaloric properties and elastic moduli of the la(Fe, si)₁₃ compound. In TMS 2018 147th Annual Meeting and Exhibition Supplemental Proceedings (pp. 181-190). (Minerals, Metals and Materials Series; Vol. Part F12). Springer International Publishing. https://doi.org/10.1007/978-3-319-72526-0_17

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abstract = "Abstract The La(Fe, Si)13 compound shows a large magnetocaloric effect near room temperature. Partial substitution of Co for Fe can raise its Curie temperature and reduce the thermal hysteresis of its ferromagnetic transition. However, the influence of Co substitution on the crystal structure and magnetocaloric properties of La(Fe, Si)13 is not well understood yet. In this work, we report a comparative study of the crystal structure, magnetocaloric effects and elastic moduli of polycrystalline LaFe11.5 Si1.5 and LaCoFe10.5 Si1.5 samples using synchrotron radiation X-ray diffraction, magnetic measurements and resonant ultrasound spectroscopy. Compared to the Co-free sample, the Co-doped sample shows a sluggish ferromagnetic transition and reduced volumetric expansion as well as softer elastic moduli at room temperature. The Co-doped sample also shows stronger temperature dependence of Fe-Fe distances in its ferromagnetic state. Such differences between the samples are explained by considering the influence of Co doping on ferromagnetic interactions and lattice entropy.",

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Huang, D, Kou, R, Gao, J, Haglund, A, Yan, J, Keppens, V, Mandrus, D & Ren, Y 2018, Influence of co-doping on the crystal structure, magnetocaloric properties and elastic moduli of the la(Fe, si)₁₃ compound. in TMS 2018 147th Annual Meeting and Exhibition Supplemental Proceedings. Minerals, Metals and Materials Series, vol. Part F12, Springer International Publishing, pp. 181-190, 147th Annual Meeting and Exhibition of the Minerals, Metals and Materials Society, TMS 2018, Phoenix, United States, 03/11/18. https://doi.org/10.1007/978-3-319-72526-0_17

Influence of co-doping on the crystal structure, magnetocaloric properties and elastic moduli of the la(Fe, si)₁₃ compound. / Huang, Dan; Kou, Ronghui; Gao, Jianrong et al.
TMS 2018 147th Annual Meeting and Exhibition Supplemental Proceedings. Springer International Publishing, 2018. p. 181-190 (Minerals, Metals and Materials Series; Vol. Part F12).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Haglund, Amanda

AU - Yan, Jiaqiang

AU - Keppens, Veerle

AU - Mandrus, David

AU - Ren, Yang

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N2 - Abstract The La(Fe, Si)13 compound shows a large magnetocaloric effect near room temperature. Partial substitution of Co for Fe can raise its Curie temperature and reduce the thermal hysteresis of its ferromagnetic transition. However, the influence of Co substitution on the crystal structure and magnetocaloric properties of La(Fe, Si)13 is not well understood yet. In this work, we report a comparative study of the crystal structure, magnetocaloric effects and elastic moduli of polycrystalline LaFe11.5 Si1.5 and LaCoFe10.5 Si1.5 samples using synchrotron radiation X-ray diffraction, magnetic measurements and resonant ultrasound spectroscopy. Compared to the Co-free sample, the Co-doped sample shows a sluggish ferromagnetic transition and reduced volumetric expansion as well as softer elastic moduli at room temperature. The Co-doped sample also shows stronger temperature dependence of Fe-Fe distances in its ferromagnetic state. Such differences between the samples are explained by considering the influence of Co doping on ferromagnetic interactions and lattice entropy.

AB - Abstract The La(Fe, Si)13 compound shows a large magnetocaloric effect near room temperature. Partial substitution of Co for Fe can raise its Curie temperature and reduce the thermal hysteresis of its ferromagnetic transition. However, the influence of Co substitution on the crystal structure and magnetocaloric properties of La(Fe, Si)13 is not well understood yet. In this work, we report a comparative study of the crystal structure, magnetocaloric effects and elastic moduli of polycrystalline LaFe11.5 Si1.5 and LaCoFe10.5 Si1.5 samples using synchrotron radiation X-ray diffraction, magnetic measurements and resonant ultrasound spectroscopy. Compared to the Co-free sample, the Co-doped sample shows a sluggish ferromagnetic transition and reduced volumetric expansion as well as softer elastic moduli at room temperature. The Co-doped sample also shows stronger temperature dependence of Fe-Fe distances in its ferromagnetic state. Such differences between the samples are explained by considering the influence of Co doping on ferromagnetic interactions and lattice entropy.

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ER -

Huang D, Kou R, Gao J, Haglund A, Yan J, Keppens V et al. Influence of co-doping on the crystal structure, magnetocaloric properties and elastic moduli of the la(Fe, si)₁₃ compound. In TMS 2018 147th Annual Meeting and Exhibition Supplemental Proceedings. Springer International Publishing. 2018. p. 181-190. (Minerals, Metals and Materials Series). doi: 10.1007/978-3-319-72526-0_17