Home Technology Magnetic properties of the hydrogenated unconventional superconductor UCoGe–H
Article
Licensed
Unlicensed Requires Authentication

Magnetic properties of the hydrogenated unconventional superconductor UCoGe–H

  • Anna Adamska , Ladislav Havela , Karl Eichinger , Jiří Pospíšil and Khrystyna Miliyanchuk
Published/Copyright: June 11, 2013
Become an author with De Gruyter Brill
Submit Manuscript Author Information
International Journal of Materials Research
From the journal International Journal of Materials Research Volume 100 Issue 9

Abstract

The effect of hydrogenation on magnetic properties of the weakly ferromagnetic superconductor UCoGe was studied. UCoGe hydrides were synthesized at T = 773 K at different pressure of H2 gas (8, 5, 2 bar). The hydrogenation at 8 bar and 5 bar results in a change of the crystal structure from orthorhombic (TiNiSi structure type) to hexagonal (ZrBeSi type) with H concentrations just below 2 H/f. u. For one of such β-hydrides, UCoGeH1.7, the Curie temperature increases from 3 K up to 50 K and the spontaneous magnetic moment from 0.03 μB/f. u. to 0.05 μB/f. u. An α-hydride of UCoGe (ΔV/V = 0.25 %) with a hydrogen concentration 0.1 H/f. u. was obtained at 2 bar. It has the same crystal structure as a pure compound and surprisingly exhibits no magnetic order.

Keywords: Uranium intermetallics; Hydrides; Magnetic properties; Crystal structure
* Correspondence address, Mgr. Anna Adamska Charles University Ke Karlovu 5, 12116 Praha 2, The Czech Republic Tel.: +420 221 911 351 Fax: +420 221 911 351 E-mail:

References

[1] K.H.J.Buschow, E.Brück, R.G.van Wierst, F.R.de Boer, L.Havela, V.Sechovsky, P.Nozar, E.Sugiura, M.Ono, M.Date, A.Yamagishi: J. Appl. Phys.67 (1990) 5215.10.1063/1.344641Search in Google Scholar

[2] N.T.Huy, A.Gasparini, D.E.de Nijs, Y.Huang, J.C.P.Klaasse, T.Gortenmulder, A.de Visser, A.Hamann, T.Görlach, H. v.Löhneysen: Phys. Rev. Lett.99 (2007) 067006.Search in Google Scholar

[3] A.V.Kolomiets, L.Havela, A.V.Andreev, F.Wastin, J.Šebek, M.Maryško: Phys. Rev. B66 (2002) 144423.10.1103/PhysRevB.66.144423Search in Google Scholar

[4] R.Pöttgen, B.Chevalier, P.Gravereau, B.Darriet, W.Jeitschko, J.Etourneau: J. Solid State Chem.115 (1995) 247.10.1006/jssc.1995.1128Search in Google Scholar

[5] El.HassingerD.Aoki, G.Knebel, J.Flouquet: J. Phys. Soc. Japan77 (2008) 073703.Search in Google Scholar

[6] L.Havela, M.Diviš, V.Sechovský, A.V.Andreev. F.Honda, G.Oomi, Y.Méresse, S.Heathman: J. Alloys Comp.322 (2001) 7.10.1016/S0925-8388(01)01176-8Search in Google Scholar

[7] R.Troć, V.H.Tran: J. Magn. Magn. Mater.73 (1988) 389.10.1016/0304-8853(88)90107-2Search in Google Scholar

Received: 2008-8-26
Accepted: 2008-12-12
Published Online: 2013-06-11
Published in Print: 2009-09-01

© 2009, Carl Hanser Verlag, München

Articles in the same Issue

  1. Contents
  2. Contents
  3. History
  4. Pierre Auger – Lise Meitner: Comparative contributions to the Auger effect
  5. Surface and grain-boundary segregation studied by quantitative AES and XPS
  6. High temperature mechanical spectroscopy of fine-grained ceramics
  7. The effect of electro-thermal fatigue on the structure of power electronic devices. Micro-structural evolution of the metallization layer
  8. f-Element hydrides: structure and magnetism
  9. Basic
  10. Hydrogen as a probe into 5f-magnetism
  11. Magnetism in PrPdSn and NdPdSn studied on single crystals
  12. Magnetic properties of fcc Ni-based transition metal alloys
  13. X-ray characterization of magnetic digital alloys
  14. Are RENiAl hydrides metallic?
  15. HoZn5Al3: rare-earth magnetism in a new structure type
  16. The influence of substitutions on the magnetocaloric effect in RCo2 compounds
  17. Thickness shear modes and magnetoelastic waves in a bi-layered structure: magnetic film–non-magnetic substrate
  18. Electrochemical properties of fine-grained AZ31 magnesium alloy
  19. Severe plastic deformation in Gum Metal with composition at the structural stability limit
  20. Applied
  21. Structural, magnetic, and transport properties of quantum well GaAs/δ-Mn/GaAs/InxGa1–xAs/GaAs heterostructures
  22. Effect of co-doping by Pb and La on structural and magnetic properties of Bi2212 superconducting ceramics
  23. Magnetic properties of the hydrogenated unconventional superconductor UCoGe–H
  24. Electrophoresis deposition of metal nanoparticles with reverse micelles onto InP
  25. Electronic structure and electric field gradient calculations for the Zr2Ni intermetallic compound
  26. Solution growth of the Gd–Cu–Al systems in the low-gadolinium concentration range
  27. Low-temperature specific heat of selected ceramics
  28. Novel behaviors in rare-earth-filled skutterudites studied by bulk-sensitive photoemission spectroscopy
  29. Charge transport in photosensitive nanocrystalline PbTe(In) films in an alternating electric field
  30. Enrichment and depletion of alloying elements in surface layers of iron base alloys annealed under different conditions
  31. Notifications
  32. Personal
https://doi.org/10.3139/146.110177
Keywords for this article
Uranium intermetallics; Hydrides; Magnetic properties; Crystal structure

Articles in the same Issue

  1. Contents
  2. Contents
  3. History
  4. Pierre Auger – Lise Meitner: Comparative contributions to the Auger effect
  5. Surface and grain-boundary segregation studied by quantitative AES and XPS
  6. High temperature mechanical spectroscopy of fine-grained ceramics
  7. The effect of electro-thermal fatigue on the structure of power electronic devices. Micro-structural evolution of the metallization layer
  8. f-Element hydrides: structure and magnetism
  9. Basic
  10. Hydrogen as a probe into 5f-magnetism
  11. Magnetism in PrPdSn and NdPdSn studied on single crystals
  12. Magnetic properties of fcc Ni-based transition metal alloys
  13. X-ray characterization of magnetic digital alloys
  14. Are RENiAl hydrides metallic?
  15. HoZn5Al3: rare-earth magnetism in a new structure type
  16. The influence of substitutions on the magnetocaloric effect in RCo2 compounds
  17. Thickness shear modes and magnetoelastic waves in a bi-layered structure: magnetic film–non-magnetic substrate
  18. Electrochemical properties of fine-grained AZ31 magnesium alloy
  19. Severe plastic deformation in Gum Metal with composition at the structural stability limit
  20. Applied
  21. Structural, magnetic, and transport properties of quantum well GaAs/δ-Mn/GaAs/InxGa1–xAs/GaAs heterostructures
  22. Effect of co-doping by Pb and La on structural and magnetic properties of Bi2212 superconducting ceramics
  23. Magnetic properties of the hydrogenated unconventional superconductor UCoGe–H
  24. Electrophoresis deposition of metal nanoparticles with reverse micelles onto InP
  25. Electronic structure and electric field gradient calculations for the Zr2Ni intermetallic compound
  26. Solution growth of the Gd–Cu–Al systems in the low-gadolinium concentration range
  27. Low-temperature specific heat of selected ceramics
  28. Novel behaviors in rare-earth-filled skutterudites studied by bulk-sensitive photoemission spectroscopy
  29. Charge transport in photosensitive nanocrystalline PbTe(In) films in an alternating electric field
  30. Enrichment and depletion of alloying elements in surface layers of iron base alloys annealed under different conditions
  31. Notifications
  32. Personal
Sign up now to receive a 20% welcome discount
Institutional Access
How does access work?
Have an idea on how to improve our website?
Please write us.
© 2026 De Gruyter Brill
Downloaded on 1.2.2026 from https://www.degruyterbrill.com/document/doi/10.3139/146.110177/html
Scroll to top button