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冲击压缩下金属的电导率测量

DOI: 10.11858/gywlxb.2003.01.001, PP. 1-7

Keywords: 冲击压缩,,电导率,Bloch-Grü,neisen金属电导率公式

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Abstract:

探索了一种在兆巴压力冲击压缩下测量金属电导率的新方法——四电极垂向引线法,并用刻槽单晶蓝宝石作绝缘腔体,以消除分流效应对测量结果的影响。用二级轻气炮作为加载手段,测量了铁在终态平衡压力为101~208GPa压力区间内的电导率(电导率从1.45×106S/m变化到7.65×105S/m)。将测量铁电导率的压力范围扩展到了200GPa以上。实验结果表明,关于金属电导率的Bloch-Grüneisen公式在高达200GPa冲击压力下仍然有效(对于ε-铁)。

References

[1]  Tang W H, Zhang R Q, Jing F Q, et al. Theoretical Investigation of the Apparent Spectral Radiance from the Metal/Window Interface in Shock Temperature Experiments [J]. J Appl Phys, 1998, 83(5): 2469-2472.
[2]  Tan H, Ahrens T J. Shock Temperature Measurements for Metals [J]. High Pressure Research, 1990, 2: 159-182.
[3]  Weir S T, Mitchell A C, Nellis W J. Metallization of Fluid Molecular at 140 GPa (1.4 Mbar) [J]. Phys Rev Lett, 1996, 76(11): 1860-1863.
[4]  Glatzmaier G A, Roberts P H. A Three-Dimensional Self-Consistent Computer Simulation of Geomagnetic Field Reversal [J]. Nature, 1995, 337: 203.
[5]  Braginsky S I, Roberts P H. Equations Governing Convection in Earth's Core and the Geodynamo [J]. Geophys Astrophys Fluid Dynamics, 1995, 77: 1-97.
[6]  Fuller P J A, Price J H. Electrical Conductivity of Manganin and Iron at High Pressures [J]. Nature, 1962, 193: 262.
[7]  Keeler R N, Mitchell A C. Electrical Conductivity, Demagnetization, and the High Pressure Phase Transition in Shock Compressed Iron [J]. Solid State Commun, 1969, 7: 271.
[8]  Keeler R N, Royce E B. Electrical Conductivity of Condensed Media at High Pressures [A]. Caldirola P, Knoepfel H. Physics of High Energy Density, Proc Inter School of Physics "Enrico Fermi", Course XLVII [C]. New York: Academic Press, 1971. 106.
[9]  Matassov G. The Electrical Conductivity of Iron-Silicon Alloys at High Pressures and the Earth's Core [R]. UCRL-52322, 1977.
[10]  Weir S T, Mitchell A C, Nellis W J. Electrical Resistivity of Single-Crystal Al2O3 Shock Compressed in the Pressure Range 91~220 GPa (0. 91~2. 20 Mbar) [J]. J Appl Phys, 1996, 80(3): 1522-1525.
[11]  Meyers M A. Dynamic Behavior of Materials [M]. New York: John Wiley & Sons Inc, 1994: 157-201.
[12]  Ahrens T J, Johnson M L. Shock Wave Data for Minerals [A]. Ahrens T J. AGU Reference Shelf 2: Mineral Physics & Crystallography, a Handbook of Physical Constants [C]. USA: American Geophysical Union, 1995. 143-184.
[13]  Anderson O L, Issak D G. Calculated Melting Curves for Phases of Iron [J]. Am Mineral, 2000, 85: 376.
[14]  Anderson O L, Schreiber E. Some Elastic Constant Data on Minerals Relevant to Geophysics [J]. Review of Geophysics, 1968, 6: 491.
[15]  McQueen R G, Marsh S P, Taylor J W, et al. The Equation of State of Solids from Shock Wave Studies [A]. Kinslow R. High-Velocity Impact Phenomena [C]. Calif: Academic Press, 1970.
[16]  Anderson O L. The Grüneisen Parameter for Iron at Outer Core Conditions and the Resulting Conductive Heat and Power in the Core [J]. Phys Earth Planet Inter, 1998, 109: 179.
[17]  Gerritsen A N. Metallic Conductivity, Handbuch der Physik [M]. Berlin: Springer, 1956.
[18]  Andrews D J. Equation of State of Alpha and Epsilon Phases of Iron [J]. J Phys Chem Solids, 1973, 34: 825.

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