NDLI: North-Holland , Amsterdam HIGH-PRESSURE MAGNETISATION STUDIES OF SOME HEAVY-FERMION URANIUM

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North-Holland , Amsterdam HIGH-PRESSURE MAGNETISATION STUDIES OF SOME HEAVY-FERMION URANIUM

Content Provider	Semantic Scholar
Author	Louis, E. Visser, A. De Menovsky, A.
Copyright Year	2002
Abstract	Among the heavy-fermion systems that have been discovered in the past few years, the intermetallic compound UPt 3 (hexagonal MgCd3-type of structure) is of special interest because of the coexistence of spin-fluctuation phenomena (indicated by a pronounced T 3 I n ( T / T * ) term in the specific heat) and superconductivity [1, 2, 3]. High-pressure data turn out to be helpful for checking theories that have been developed for describing the normal and superconducting states with the same set of microscopic parameters. Up till now the high-pressure magnetisation studies on UPt 3 have been performed on polycrystalline samples [4, 5]. Due to the large magnetic anisotropy present in this compound, information on single-crystalline material is highly desirable. This information is presented in the present paper. The results of these high-pressure magnetisation measurements will be compared with high-pressure resistivity data, with forced magnetostriction measurements and with a combined analysis of specific heat and thermal expansion data. A second interesting system, in which magnetism and superconductivity coexist, is the tetragonal compound URu2Si 2 (ThCr2Si2-type of structure). The compound exhibits a magnetic transition at 17.5 K and superconductivity below 1 K [6, 7, 8]. Previous high-pressure data include the pressure dependence of the magnetic [7, 9] and superconducting [7] transition temperatures which were found to have different signs. In the present paper we present a further analysis of our high-pressure resistivity data for a monocrystalline sample [9]. In addition recent results of high-pressure magnetisation studies are reported.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://iop.fnwi.uva.nl/cmp/docs/deVisser/1986/Physica-B-144-1986-48.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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