The effects of contact placement and sample shape on the measurement of electrical resistivity studied by means of the three-dimensional finite-element method: application to anisotropic samples

作者: J Rodriguez Fernandez , J C Gomez Sal

DOI: 10.1088/0022-3727/21/7/019

关键词:

摘要: The authors present a procedure for determining the ratio between real and apparent (measured) electrical resistivities. calculations based on finite-element method can be applied to different geometries positions of contact potentials, three-dimensional case using polycrystalline samples single crystals with anisotropic resistivity. results are compared other analytical isotropic importance choice directions in single-crystal measurements is stressed. A general systematic description how use given. An application situation also discussed.

参考文章(12)
G. Fillion, M.A. Frémy, D. Gignoux, J.C. Gomez Sal, B. Gorges, Magnetic properties of the CeNi0.8Pt0.2 dense Kondo ferromagnet studied on a single crystal Journal of Magnetism and Magnetic Materials. ,vol. 63, pp. 117- 119 ,(1987) , 10.1016/0304-8853(87)90540-3
R. O. Ritchie, K. J. Bathe, On the calibration of the electrical potential technique for monitoring crack growth using finite element methods International Journal of Fracture. ,vol. 15, pp. 47- 55 ,(1979) , 10.1007/BF00115908
T. Luig, M. Rissmann, H. Merz, Double-step excitation in spin polarized photoemission from NEA GaAs(100) Solid State Communications. ,vol. 58, pp. 775- 779 ,(1986) , 10.1016/0038-1098(86)90766-0
J E Aubrey, K Anagnostopoulos, Electrical resistivity anisotropy measurement Journal of Physics D. ,vol. 9, pp. 2221- 2224 ,(1976) , 10.1088/0022-3727/9/15/013
J.M. Barandiaran, D. Gignoux, D. Schmitt, J.C.Gomez Sal, J.Rodriguez Fernandez, Magnetic properties of RNi2Si2 compounds (R= rre earth) Journal of Magnetism and Magnetic Materials. ,vol. 69, pp. 61- 70 ,(1987) , 10.1016/0304-8853(87)90212-5
A. E. Stephens, H. J. Mackey, J. R. Sybert, Effects of Contact Placement and Sample Shape in the Measurement of Electrical Resistivity Journal of Applied Physics. ,vol. 42, pp. 2592- 2597 ,(1971) , 10.1063/1.1660594
Erik B. Hansen, On the influence of shape and variations in conductivity of the sample on four-point measurements Applied Scientific Research, Section B. ,vol. 8, pp. 93- 104 ,(1960) , 10.1007/BF02920047
A. Mircea, The geometric factor in semiconductor four-probe resistivity measurements Solid-State Electronics. ,vol. 6, pp. 459- 462 ,(1963) , 10.1016/0038-1101(63)90030-3
Katsunori Mori, Kiyoo Sato, Temperature Dependence of Electrical Resistivity in Ferromagnetic GdNi Single Crystal Journal of the Physical Society of Japan. ,vol. 49, pp. 246- 249 ,(1980) , 10.1143/JPSJ.49.246