中国物理B ›› 2017, Vol. 26 ›› Issue (10): 106501-106501.doi: 10.1088/1674-1056/26/10/106501

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Negative thermal expansion and photoluminescence in solid solution (HfSc)0.83W2.25P0.83O12δ

Yuan Liang(梁源), Yong-Guang Cheng(程永光), Xiang-Hong Ge(葛向红), Bao-He Yuan(袁保合), Juan Guo(郭娟), Qian Sun(孙强), Er-Jun Liang(梁二军)   

  1. 1. Department of Applied Physics, Donghua University, Shanghai 201620, China;
    2. School of Physical Science & Engineering and Key Laboratory of Materials Physics of Ministry of Education of China, Zhengzhou University, Zhengzhou 450052, China
  • 收稿日期:2017-05-18 修回日期:2017-06-29 出版日期:2017-10-05 发布日期:2017-10-05
  • 通讯作者: Yuan Liang E-mail:yliang@dhu.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11574276, 51302249, and 11405028) and the Fundamental Research Fund for the Central Universities, China.

Negative thermal expansion and photoluminescence in solid solution (HfSc)0.83W2.25P0.83O12δ

Yuan Liang(梁源)1,2, Yong-Guang Cheng(程永光)2, Xiang-Hong Ge(葛向红)2, Bao-He Yuan(袁保合)2, Juan Guo(郭娟)2, Qian Sun(孙强)2, Er-Jun Liang(梁二军)2   

  1. 1. Department of Applied Physics, Donghua University, Shanghai 201620, China;
    2. School of Physical Science & Engineering and Key Laboratory of Materials Physics of Ministry of Education of China, Zhengzhou University, Zhengzhou 450052, China
  • Received:2017-05-18 Revised:2017-06-29 Online:2017-10-05 Published:2017-10-05
  • Contact: Yuan Liang E-mail:yliang@dhu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11574276, 51302249, and 11405028) and the Fundamental Research Fund for the Central Universities, China.

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摘要：

A solid solution of (HfSc)0.83W2.25P0.83O12-δ is synthesized by the high-temperature, solid-state reaction and fast-quenching method. It is shown that it possesses an orthorhombic structure with space group Pmmm (47) and exhibits negative thermal expansion (NTE) property with low anisotropy in thermal expansion. The coefficients of thermal expansion (CTEs) for a, b, and c axes are -1.41×10-6 K-1, -2.23×10-6 K-1, and -1.87×10-6 K-1, respectively. This gives rise to volume and linear CTEs of -3.10×10-6 K-1 and -1.03×10-6 K-1, respectively. Besides, it exhibits also intense photoluminescence from 360 nm to about 600 nm. The mechanism of NTE and the correlation of the PL with axial thermal expansion property are discussed.

关键词: negative thermal expansion, solid solution, photoluminescence

Abstract:

A solid solution of (HfSc)0.83W2.25P0.83O12-δ is synthesized by the high-temperature, solid-state reaction and fast-quenching method. It is shown that it possesses an orthorhombic structure with space group Pmmm (47) and exhibits negative thermal expansion (NTE) property with low anisotropy in thermal expansion. The coefficients of thermal expansion (CTEs) for a, b, and c axes are -1.41×10-6 K-1, -2.23×10-6 K-1, and -1.87×10-6 K-1, respectively. This gives rise to volume and linear CTEs of -3.10×10-6 K-1 and -1.03×10-6 K-1, respectively. Besides, it exhibits also intense photoluminescence from 360 nm to about 600 nm. The mechanism of NTE and the correlation of the PL with axial thermal expansion property are discussed.

Key words: negative thermal expansion, solid solution, photoluminescence

中图分类号:  (Thermal expansion; thermomechanical effects)

  • 65.40.De
81.05.Je (Ceramics and refractories (including borides, carbides, hydrides, nitrides, oxides, and silicides)) 61.50.-f (Structure of bulk crystals) 78.55.-m (Photoluminescence, properties and materials)