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Contactless resistivity measurements under high pressure
Umeå University, Faculty of Science and Technology, Physics.
Umeå University, Faculty of Science and Technology, Physics.
1983 (English)In: Journal of Physics E: Scientific Instruments, ISSN 0022-3735, Vol. 16, no 5, 408-411 p.Article in journal (Refereed) Published
Abstract [en]

For the first time, a contactless inductive method has been devised for measurements of the electrical conductivity of metallic materials under very high pressures (>1 GPa). A sample in the form of a thin disc is placed in a pick-up coil in a steady-state AC magnetic field. The output voltage from the coil is analysed with a lock-in amplifier to find the component due to eddy currents in the sample, from which the conductivity is calculated, using a semi-empirical expression. The influence of the steel pressure vessel is eliminated by making simultaneous measurements on a known reference material. Experimental results are shown for tin and sodium up to 1.3 GPa.

Place, publisher, year, edition, pages
Bristol: Institute of Physics , 1983. Vol. 16, no 5, 408-411 p.
Keyword [en]
Resistivity, conductivity, high pressure, contactless measurements, inductive method, Na, Sn
National Category
Condensed Matter Physics
Research subject
Physics
Identifiers
URN: urn:nbn:se:umu:diva-23217DOI: 10.1088/0022-3735/16/5/011OAI: oai:DiVA.org:umu-23217DiVA: diva2:221584
Available from: 2009-06-04 Created: 2009-06-04 Last updated: 2010-02-03

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