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The effect of variation in pressure-induced electrode position on the measurement accuracy of sample conductivity in a diamond anvil cell(Retracted Article)

Wu Bao-Jia Han Yong-Hao Peng Gang Jin Feng-Xi Gu Guang-Rui Gao Chun-Xiao

The effect of variation in pressure-induced electrode position on the measurement accuracy of sample conductivity in a diamond anvil cell(Retracted Article)

Wu Bao-Jia, Han Yong-Hao, Peng Gang, Jin Feng-Xi, Gu Guang-Rui, Gao Chun-Xiao
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Publishing process
  • Received Date:  23 February 2011
  • Accepted Date:  21 June 2011
  • Published Online:  05 June 2011

The effect of variation in pressure-induced electrode position on the measurement accuracy of sample conductivity in a diamond anvil cell(Retracted Article)

  • 1. College of Science, Yanbian University, Yanji 133002, China;
  • 2. State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China

Abstract: Using the finite element analysis, we study the effect of variation in pressure-induced electrode position on the measurement accuracy of the sample conductivity in diamond anvil cell with the Van der Pauw method. The results show that the electrode contact placement and electrode size play key roles in influencing the conductivity measurement accuracy. Theoretical computation reveals that the Van der Pauw method can provide an accurate result when the spacing between electrode center and sample periphery b is less than or equal to d/9 (d is the sample diameter). Otherwise, the closer to the sample center of the contact location, the more rapidly the sample conductivity accuracy error increases. Such an effect is more significant for the semiconductor sample with high resistivity with the electrode position variation is the same.

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