The Electrodes Factor of Accurate Resistivity Measurement with Four-Point Probe Method in a Diamond Anvil Cell
-
摘要: 为了解金刚石对顶砧上电阻率高压原位测量中的电极效应,使用有限元分析方法,对样品中的稳恒电流场进行了模拟计算,发现电极的几何尺寸以及电极与样品电阻率的差别都会对测量误差产生影响。结果发现:电极的尺寸越大,误差越大;电极与样品电阻率数值差越大,误差越大。由此给出了减小电极效应以及减小测量误差的方法。Abstract: To figure out the effect of electrode resistivity on the in situ resistivity measurement with four-point probe method in a diamond anvil cell (DAC), the authors simulated the distribution of the steady electric field in the sample with finite element analysis (FEA). It reveals that the electrode resistivity smaller than the sample resistivity too much would result in a large measurement error, and therefore indicates that reducing the resistivity difference between the electrode and sample can improve the measurement accuracy.
-
Key words:
- high-pressure /
- four-point probe method /
- resistivity /
- electrodes effect
-
Gao C X, Han Y H, Ma Y X, et al. Accurate Measurements of High Pressure Resistivity in a Diamond Anvil Cell [J]. Rev Sci Instrum, 2005, 76(8): 083912-083916. Boye S A, Rosen D, Lazor P, et al. Precise Magnetoresistance and Hall Resistivity Measurements in the Diamond Anvil Cell [J]. Rev Sci Instrum, 2004, 75(11): 5010-5015. Boye S A, Lazor P, Ahuja R. Magnetoresistance and Hall Effect Measurements of Ni to 6 GPa [J]. J Magne Magnetic Mater, 2005, 294(3): 347-358. Xu Y S, McCammon C, Poe B T. The Effect of Alumina on the Electrical Conductivity of Silicate Perovsikite [J]. Science, 1998, 282(5390): 922-924. Ashcroft N W. Putting the Squeeze on Lithium [J]. Nature, 2002, 419(6907): 569-572. Shimizu K, Ishikawa H, Takao D, et al. Superconductivity in Compressed Lithium at 20 K [J]. Nature, 2002, 419(6907): 597-599. McMillan P F. New Materials from High-Pressure Experiments [J]. Nat Mater, 2002, 1(1): 19-25. Valdes L B. Resistivity Measurements on Germanium for Transistors [J]. Proceedings of the IRE, 1954, 42(2): 420-427. Uhlir A. Micromachining with Virtual Electrodes [J]. Rev Sci Instrum, 1955, 26(1): 965-968. Mao H K, Bell P M. Electrical Resistivity Measurements of Conductors in the Diamond-Window, High-Pressure Cell [J]. Rev Sci Instrum, 1981, 52(4): 615-616. Han Y H, Gao C X, Ma Y Z, et al. Integrated Microcircuit on a Diamond Anvil for High Pressure Electrical Resistivity Measurement [J]. Appl Phys Lett, 2005, 86(6): 064104-064106. Reichlin R L. Measuring the Electrical Resistance of Metals to 40 GPa in the Diamond-Anvil Cell [J]. Rev Sci Instrum, 1983, 54(12): 1674-1677. Pu F N. Electron Transfer and Electrical Resistance of Nickel under High Pressure up to 42 GPa [J]. Physics Letters A, 1991, 157(2-3): 151-154. Moss W C, Hallquist J O, Reichlin R, et al. Finite Element Analysis of the Diamond Anvil Cell: Achieving 4.6 Mbar [J]. Appl Phys Lett, 1986, 48(19): 1258-1260. Merkel S, Hemley R J, Mao H K. Finite-Element Modeling of Diamond Deformation at Multimegabar Pressures [J]. Appl Phys Lett, 1999, 74(5): 656-658. Kiefer B, Duffy T S. Finite Element Simulations of the Laser-Heated Diamond-Anvil Cell [J]. J Appl Phys, 2005, 97(11): 114902-114910.
点击查看大图
计量
- 文章访问数: 7908
- HTML全文浏览量: 646
- PDF下载量: 861