Compressibility of pyrochlore-type MgZrSi2O7 determined by in situ X-ray diffraction in a large-volume high pressure apparatus

	Compressibility of pyrochlore-type MgZrSi2O7 determined by in situ X-ray diffraction in a large-volume high pressure apparatus
	Shuangmeng Zhai; Shuangming Shan; Daisuke Yamazaki; Ken-ichi Funakoshi
	2013
Source Publication	High Pressure Research
Volume	33 Issue:1 Pages:1-7
Abstract	The pyrochlore-type MgZrSi₂O₇ has been investigated by in situ synchrotron energy-dispersive X-ray diffraction measurements up 24.3 GPa at room temperature in a multianvil high pressure apparatus. The pressure has been calculated using an internal gold metal pressure calibrant. No phase transformation was observed in this study. A third-order Birch–Murnaghan equation of state was used to fit the pressure–volume data. The fitting gives a volume of V ₀=802.8±0.2 Å³, an isothermal bulk modulus of K _T=249±12 GPa, and first pressure derivative of K′_T=3.2±1.3. If K′_Tis fixed as 4, K _Tis obtained as 241.8±2.6 GPa. Compared with zirconate or titanate pyrochlores, MgZrSi₂O₇ shows a smaller compressibility due to a larger cation radii ratio (r _{Mg, Zr}/r _Si).
Keyword	Pyrochlore mgzrsi2o7 high Pressure x-ray Diffraction equation Of State
Indexed By	SCI
Document Type	期刊论文
Identifier	http://ir.gyig.ac.cn/handle/42920512-1/11105
Collection	地球内部物质高温高压实验室
Affiliation	1.Key Laboratory of Orogenic Belts and Crustal Evolution, Ministry of Education; School of Earth and Space Sciences, Peking University, Beijing, 100871, People's Republic of China 2.Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550002, People's Republic of China 3.Institute for Study of the Earth's Interior, Okayama University, Misasa, Tottori, 682-0193, Japan 4.Japan Synchrotron Radiation Research Institute, Sayo, Hyogo, 679-5198, Japan
Recommended Citation GB/T 7714	Shuangmeng Zhai；Shuangming Shan；Daisuke Yamazaki；Ken-ichi Funakoshi. Compressibility of pyrochlore-type MgZrSi2O7 determined by in situ X-ray diffraction in a large-volume high pressure apparatus[J]. High Pressure Research,2013,33(1):1-7.
APA	Shuangmeng Zhai；Shuangming Shan；Daisuke Yamazaki；Ken-ichi Funakoshi.(2013).Compressibility of pyrochlore-type MgZrSi2O7 determined by in situ X-ray diffraction in a large-volume high pressure apparatus.High Pressure Research,33(1),1-7.
MLA	Shuangmeng Zhai；Shuangming Shan；Daisuke Yamazaki；Ken-ichi Funakoshi."Compressibility of pyrochlore-type MgZrSi2O7 determined by in situ X-ray diffraction in a large-volume high pressure apparatus".High Pressure Research 33.1(2013):1-7.

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