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  Formation of a heavy fermion phase in UCu4+xAl8−x by variation of stoichiometry

Geibel, C., Aahlheim, U., Giorgi, A. L., Sparn, G., Spille, H., Steglich, F., et al. (1990). Formation of a heavy fermion phase in UCu4+xAl8−x by variation of stoichiometry. Physica B-Condensed Matter, 163(1-3), 194-196. doi:10.1016/0921-4526(90)90166-R.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0019-D529-3 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0019-D52A-1
Genre: Journal Article

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Geibel, C.1, Author
Aahlheim, U.1, Author
Giorgi, A. L.1, Author
Sparn, G.1, Author
Spille, H.1, Author
Steglich, F.2, Author           
Suski, W.1, Author
Affiliations:
1external, ou_persistent22              
2External Organizations, ou_persistent22              

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 Abstract: Progressive substitution of Cu for Al in UCu4+xAl8−x yields as increasing compression of the unit cell. This results in a reduction of the Néel temperature from ifTN = 42 K for x = 0 to ifTN = 15 K for x = 1.0. No magnetic ordering is found for x ⩾ 1.5. Rather the T-dependence of the resistivity shows a maximum in the range 6 to 15 K and indicates the formation of a Kondo-lattice state. The latter is characterized by heavy fermions (γ(Tå0)≅0.8 J/K2 mol for x = 1.75).

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 Dates: 1990-04-01
 Publication Status: Issued
 Pages: -
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 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: A1990DG46700055
DOI: 10.1016/0921-4526(90)90166-R
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Title: Physica B-Condensed Matter
  Other : Physica B
Source Genre: Journal
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Publ. Info: Amsterdam : North-Holland
Pages: - Volume / Issue: 163 (1-3) Sequence Number: - Start / End Page: 194 - 196 Identifier: ISSN: 0921-4526
CoNE: https://pure.mpg.de/cone/journals/resource/954928575733