Large Linear Negative Thermal Expansion in NiAs-type Magnetic Intermetallic Cr-Te-Se Compounds.

Xu, Jiawang; Zheng, Xinqi; Yang, Shuxian; Xi, Lei; Wang, Shouguo; Zhang, Lei; Yang, Wenyun; Yang, Jinbo; Ma, Xiaobai; Chen, Dongfeng; He, Lunhua; Deng, Sihao; Zhang, Jingyan; Wu, Yanfei; Shen, Baogen

Xu, Jiawang; Zheng, Xinqi; Yang, Shuxian; Xi, Lei; Wang, Shouguo; Zhang, Lei; Yang, Wenyun; Yang, Jinbo; Ma, Xiaobai; Chen, Dongfeng; He, Lunhua; Deng, Sihao; Zhang, Jingyan; Wu, Yanfei; Shen, Baogen.

Afiliación

Xu J; Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China.
Zheng X; Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China.
Yang S; Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China.
Xi L; State Key Laboratory for Magnetism, Institute of Physics, Chinese Academy of Sciences & University of Chinese Academy of Sciences, Beijing 100190, China.
Wang S; Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China.
Zhang L; Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China.
Yang W; Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, China.
Yang J; State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China.
Ma X; State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China.
Chen D; Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China.
He L; Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China.
Deng S; Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China.
Zhang J; State Key Laboratory for Magnetism, Institute of Physics, Chinese Academy of Sciences & University of Chinese Academy of Sciences, Beijing 100190, China.
Wu Y; Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China.
Shen B; Spallation Neutron Source Science Center, Dongguan, Guangdong 523803, China.

Inorg Chem ; 59(12): 8603-8608, 2020 Jun 15.

Article en En | MEDLINE | ID: mdl-32462872

ABSTRACT

ABSTRACT

A large linear negative thermal expansion (NTE) and expanded NTE temperature range (ΔTNTE) were obtained in magnetoelastic CrTe1-xSex (0 ≤ x ≤ 0.15) compounds. For CrTe compound, its thermal expansion coefficient of volume (αV) was calculated to be -28.8 ppm K-1 with the temperature ranging from 280 to 340 K. Substituting Te with Se atoms, the NTE behavior and magnetic properties can be well manipulated. With increasing Se in CrTe1-xSex (0 ≤ x ≤ 0.15) compounds, the ΔTNTE increases from 60 K (280-340 K for x = 0), to 80 K (240-320 K for x = 0.05), to 95 K (200-295 K for x = 0.1), and finally to 100 K (170-270 K for x = 0.15). Furthermore, a linear NTE remains independent of temperature for samples with x ≤ 0.1. The relationship between tunable NTE and magnetic properties was analyzed in detail, indicating that the NTE in CrTe1-xSex compounds originates from the magnetovolume effect (MVE).

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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Idioma: En Revista: Inorg Chem Año: 2020 Tipo del documento: Article País de afiliación: China

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