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Title: Elasticity of single-crystal superhydrous phase B at simultaneous high pressure-temperature conditions: Elasticity of Shy-B

Authors:
 [1];  [2];  [1];  [1];  [3];  [2];  [4];  [2];  [5];  [6]
  1. Laboratory of Seismology and Physics of Earth's Interior, School of Earth and Space Sciences, University of Science and Technology of China, Hefei China
  2. Laboratory of Seismology and Physics of Earth's Interior, School of Earth and Space Sciences, University of Science and Technology of China, Hefei China, National Geophysics Observatory, Bozhou China
  3. Key Laboratory of High-Temperature and High-Pressure Study of the Earth's Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang China
  4. CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei China
  5. Center for Advanced Radiation Sources, University of Chicago, Chicago Illinois USA
  6. Department of Geological Sciences, Jackson School of Geosciences, The University of Texas at Austin, Austin Texas USA
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1402384
Grant/Contract Number:
FG02-94ER14466; EAR-0622171
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Geophysical Research Letters
Additional Journal Information:
Journal Volume: 43; Journal Issue: 16; Related Information: CHORUS Timestamp: 2017-10-23 18:08:21; Journal ID: ISSN 0094-8276
Publisher:
Wiley Blackwell (John Wiley & Sons)
Country of Publication:
United States
Language:
English

Citation Formats

Li, Xinyang, Mao, Zhu, Sun, Ningyu, Liao, Yifan, Zhai, Shuangmeng, Wang, Yi, Ni, Huaiwei, Wang, Jingyun, Tkachev, Sergey N., and Lin, Jung-Fu. Elasticity of single-crystal superhydrous phase B at simultaneous high pressure-temperature conditions: Elasticity of Shy-B. United States: N. p., 2016. Web. doi:10.1002/2016GL070027.
Li, Xinyang, Mao, Zhu, Sun, Ningyu, Liao, Yifan, Zhai, Shuangmeng, Wang, Yi, Ni, Huaiwei, Wang, Jingyun, Tkachev, Sergey N., & Lin, Jung-Fu. Elasticity of single-crystal superhydrous phase B at simultaneous high pressure-temperature conditions: Elasticity of Shy-B. United States. doi:10.1002/2016GL070027.
Li, Xinyang, Mao, Zhu, Sun, Ningyu, Liao, Yifan, Zhai, Shuangmeng, Wang, Yi, Ni, Huaiwei, Wang, Jingyun, Tkachev, Sergey N., and Lin, Jung-Fu. 2016. "Elasticity of single-crystal superhydrous phase B at simultaneous high pressure-temperature conditions: Elasticity of Shy-B". United States. doi:10.1002/2016GL070027.
@article{osti_1402384,
title = {Elasticity of single-crystal superhydrous phase B at simultaneous high pressure-temperature conditions: Elasticity of Shy-B},
author = {Li, Xinyang and Mao, Zhu and Sun, Ningyu and Liao, Yifan and Zhai, Shuangmeng and Wang, Yi and Ni, Huaiwei and Wang, Jingyun and Tkachev, Sergey N. and Lin, Jung-Fu},
abstractNote = {},
doi = {10.1002/2016GL070027},
journal = {Geophysical Research Letters},
number = 16,
volume = 43,
place = {United States},
year = 2016,
month = 8
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1002/2016GL070027

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  • Sound velocities and elastic moduli of solid single-crystal CO{sub 2} were measured at pressures up to 11.7(3) GPa by Brillouin spectroscopy. The aggregate adiabatic bulk modulus (K{sub S}), shear modulus (G), and their pressure derivatives for CO{sub 2} Phase I are K{sub S0} = 3.4(6) GPa, G{sub 0} = 1.8(2) GPa, (dK{sub S}/dP){sub 0} = 7.8(3), (dG/dP){sub 0} = 2.5(1), (d{sup 2}K{sub S}/dP{sup 2}){sub 0} = −0.23(3) GPa{sup −1}, and (d{sup 2}G/dP{sup 2}){sub 0} = −0.10(1) GPa{sup −1}. A small increase of elastic properties was observed between 9.8(1) and 10.5(3) GPa, in agreement with the CO{sub 2} I-III transition pressure determined from previous x-ray diffraction experiments. Above the transition pressure P{sub T},more » we observed a mixture dominated by CO{sub 2}-I, with minor CO{sub 2}-III. The CO{sub 2}-I + III mixture shows slightly increased sound velocities compared to pure CO{sub 2}-I. Elastic anisotropy calculated from the single-crystal elasticity tensor exhibits a decrease with pressure beginning at 7.9(1) GPa, which is lower than P{sub T}. Our results coincide with recent X-ray Raman observations, suggesting that a pressure-induced electronic transition is related to local structural and optical changes.« less
  • Graphite BC[sub 2]N has been compressed with Co metal at a pressure of 5.5 GPa and temperatures of 1400-1600[degrees]C. The principal resulting products were crystals (average dimension 3 [mu]m) with cubiclike facets. The powder X-ray diffraction pattern revealed two kinds of cubic phase, in approximately equal amounts, which were identified as diamond and cBN on the basis of their lattice parameters. Microelemental analyses on individual crystal fragments by K-edge electron energy-loss spectroscopy confirmed this disproportionating crystallization scheme: half of the grains were composed of carbon-only signals of which gave fine-structure characteristic of sp[sup 3] bonding and the other half gavemore » spectra characteristic of sp[sup 3] boron and nitrogen. The crystallization of cBN as well as diamond in the catalytic solvent of pure Co metal is observed here for the first time and is of relevance to the mechanism of the accepted catalytic action of cobalt on the hexagonal/cubic transformation. 26 refs., 4 figs., 2 tabs.« less