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

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.

Authors:
 [1];  [1]; ORCiD logo [1];  [2];  [2]; ORCiD logo [3];  [1];  [4]; ; ORCiD logo [1]; ORCiD logo [1]
  1. Univ. of Science and Technology, Beijing (China)
  2. Helmholtz-Zentrum Berlin für Materialien und Energie, Berlin (Germany)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
  4. Chinese Academy of Sciences (CAS), Beijing (China)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). 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.
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. doi:10.1021/acs.inorgchem.8b03600.
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. doi:10.1021/acs.inorgchem.8b03600.
@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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