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

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

doi:10.1021/acs.inorgchem.8b03600

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

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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)Fe₂, while both end members of HfFe₂ and TiFe₂ 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)Fe₂ 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.

Authors:

Qiao, Yongqiang ^[1]; Song, Yuzhu ^[1];

^[1]; Liu, Xinzhi ^[2]; Franz, Alexandra ^[2];

^[3]; Deng, Jinxia ^[1]; Huang, Rongjin ^[4]; Li, Laifeng;

^[1];

^[1]

Univ. of Science and Technology, Beijing (China)
Helmholtz-Zentrum Berlin für Materialien und Energie, Berlin (Germany)
Argonne National Lab. (ANL), Argonne, IL (United States)
Chinese Academy of Sciences (CAS), Beijing (China)

Publication Date:: 2019-04-09

Research Org.:: Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division

OSTI Identifier:: 1531169

Grant/Contract Number:: AC02-06CH11357

Resource Type:: Accepted Manuscript

Journal Name:: Inorganic Chemistry

Additional Journal Information:: Journal Volume: 58; Journal Issue: 9; Journal ID: ISSN 0020-1669

Publisher:: American Chemical Society (ACS)

Country of Publication:: United States

Language:: English

Subject:: 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; intermetallic compounds; magnetic phase coexistence; negative thermal expansion

Citation Formats


                    Qiao, Yongqiang, Song, Yuzhu, Lin, Kun, Liu, Xinzhi, Franz, Alexandra, Ren, Yang, Deng, Jinxia, Huang, Rongjin, Li, Laifeng, Chen, Jun, and Xing, Xianran. Negative Thermal Expansion in (Hf,Ti)Fe 2 Induced by the Ferromagnetic and Antiferromagnetic Phase Coexistence.  United States: N. p., 2019. 
Web.  doi:10.1021/acs.inorgchem.8b03600.

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                    Qiao, Yongqiang, Song, Yuzhu, Lin, Kun, Liu, Xinzhi, Franz, Alexandra, Ren, Yang, Deng, Jinxia, Huang, Rongjin, Li, Laifeng, Chen, Jun, & Xing, Xianran. Negative Thermal Expansion in (Hf,Ti)Fe 2 Induced by the Ferromagnetic and Antiferromagnetic Phase Coexistence.  United States.  https://doi.org/10.1021/acs.inorgchem.8b03600

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                    Qiao, Yongqiang, Song, Yuzhu, Lin, Kun, Liu, Xinzhi, Franz, Alexandra, Ren, Yang, Deng, Jinxia, Huang, Rongjin, Li, Laifeng, Chen, Jun, and Xing, Xianran. Tue .  
"Negative Thermal Expansion in (Hf,Ti)Fe 2 Induced by the Ferromagnetic and Antiferromagnetic Phase Coexistence".  United States.  https://doi.org/10.1021/acs.inorgchem.8b03600.  https://www.osti.gov/servlets/purl/1531169.

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@article{osti_1531169,

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

  author       = {Qiao, Yongqiang and Song, Yuzhu and Lin, Kun and Liu, Xinzhi and Franz, Alexandra and Ren, Yang and Deng, Jinxia and Huang, Rongjin and Li, Laifeng and Chen, Jun and Xing, Xianran},

  abstractNote = {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)Fe2, while both end members of HfFe2 and TiFe2 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)Fe2 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.},

  doi          = {10.1021/acs.inorgchem.8b03600},

  journal      = {Inorganic Chemistry},

  number       = 9,

  volume       = 58,

  place        = {United States},

  year         = {2019},

  month        = {4}

}

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

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