CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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A Negative Thermal Expansion Material of ZrMgMo3O12 |
SONG Wen-Bo1, LIANG Er-Jun1**, LIU Xian-Sheng1, LI Zhi-Yuan1, YUAN Bao-He1,2, WANG Jun-Qiao1 |
1School of Physical Science & Engineering and Key Laboratory of Materials Physics of Ministry of Education of China, Zhengzhou University, Zhengzhou 450052 2North China University of Water Resources and Electric Power, Zhengzhou 450011
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Cite this article: |
SONG Wen-Bo, LIANG Er-Jun, LIU Xian-Sheng et al 2013 Chin. Phys. Lett. 30 126502 |
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Abstract A material with the formula ZrMgMo3O12 having negative thermal expansion is presented and characterized. It is shown that ZrMgMo3O12 crystallizes in an orthorhombic symmetry with space group Pnma(62) or Pna21(33) and exhibits negative thermal expansion in a large temperature range (αl=?3.8×10?6 K?1 from 300 K to 1000 K by x-ray diffraction and αl =?3.73×10?6 K?1 from 295 K to 775 K by dilatometer). ZrMgMo3O12 remains the orthorhombic structure without phase transition or decomposition at least from 123 K to 1200 K and is not hygroscopic. These properties make it an excellent material with negative thermal expansion for a variety of applications.
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Received: 16 September 2013
Published: 13 December 2013
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PACS: |
65.40.De
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(Thermal expansion; thermomechanical effects)
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61.50.Ks
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(Crystallographic aspects of phase transformations; pressure effects)
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78.30.-j
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(Infrared and Raman spectra)
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