Negative Thermal Expansion in (Hf,Ti)Fe 2 Induced by the Ferromagnetic and Antiferromagnetic Phase Coexistence

Yongqiang Qiao; Yuzhu Song; Kun Lin; Xinzhi Liu; Alexandra Franz; Yang Ren; Jinxia Deng; Rongjin Huang; Laifeng Li; Jun Chen; Xianran Xing

doi:10.1021/acs.inorgchem.8b03600

Author(s)

Yongqiang Qiao
Yuzhu Song
Kun Lin
Xinzhi Liu
Alexandra Franz
Jinxia Deng
Rongjin Huang
Laifeng Li
Jun Chen
Xianran Xing

Detail(s)

Original language	English
Pages (from-to)	5380-5383
Journal / Publication	Inorganic Chemistry
Volume	58
Issue number	9
Publication status	Published - 6 May 2019
Externally published	Yes

Link(s)

DOI	DOI https://doi.org/10.1021/acs.inorgchem.8b03600 Final Published version
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Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85064849205&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(5828a28a-8f8f-4991-bd8c-a880f5e3ca3e).html

Abstract

Negative thermal expansion (NTE) is an intriguing physical phenomenon that can be used in the applications of thermal expansion adjustment of materials. In this study, we report a NTE compound of (Hf,Ti)Fe ₂ , while both end members of HfFe ₂ and TiFe ₂ show positive thermal expansion. The results reveal that phase coexistence is detected in the whole NTE zone, in which one phase is ferromagnetic (FM), while the other is antiferromagnetic (AFM). With increasing temperature, the FM phase is gradually transformed to the AFM one. The NTE phenomenon occurs in the present (Hf,Ti)Fe ₂ because of the fact that the unit cell volume of the AFM phase is smaller than that of the FM phase, and the mass fraction of the AFM phase increases with increasing temperature. The construction of phase coexistence can be a method to achieve NTE materials in future studies. ©

Bibliographic Note

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Citation Format(s)

[ RIS ] [ BibTeX ]

Negative Thermal Expansion in (Hf,Ti)Fe ₂ Induced by the Ferromagnetic and Antiferromagnetic Phase Coexistence. / Qiao, Yongqiang; Song, Yuzhu; Lin, Kun et al.
In: Inorganic Chemistry, Vol. 58, No. 9, 06.05.2019, p. 5380-5383.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Qiao, Y, Song, Y, Lin, K, Liu, X, Franz, A, Ren, Y, Deng, J, Huang, R, Li, L, Chen, J & Xing, X 2019, 'Negative Thermal Expansion in (Hf,Ti)Fe ₂ Induced by the Ferromagnetic and Antiferromagnetic Phase Coexistence', Inorganic Chemistry, vol. 58, no. 9, pp. 5380-5383. https://doi.org/10.1021/acs.inorgchem.8b03600

Qiao, Y., Song, Y., Lin, K., Liu, X., Franz, A., Ren, Y., Deng, J., Huang, R., Li, L., Chen, J., & Xing, X. (2019). Negative Thermal Expansion in (Hf,Ti)Fe ₂ Induced by the Ferromagnetic and Antiferromagnetic Phase Coexistence. Inorganic Chemistry, 58(9), 5380-5383. https://doi.org/10.1021/acs.inorgchem.8b03600

Qiao Y, Song Y, Lin K, Liu X, Franz A, Ren Y et al. Negative Thermal Expansion in (Hf,Ti)Fe ₂ Induced by the Ferromagnetic and Antiferromagnetic Phase Coexistence. Inorganic Chemistry. 2019 May 6;58(9):5380-5383. doi: 10.1021/acs.inorgchem.8b03600

Qiao, Yongqiang ; Song, Yuzhu ; Lin, Kun et al. / Negative Thermal Expansion in (Hf,Ti)Fe ₂ Induced by the Ferromagnetic and Antiferromagnetic Phase Coexistence. In: Inorganic Chemistry. 2019 ; Vol. 58, No. 9. pp. 5380-5383.