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Search: WFRF:(Kalvius G.M)

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  • D.R.Noakes, G.M.Kalvius, H.Nakotte, E.Schreier, R.Wäppling (author)
  • mu SR magnetic response in UPdSn
  • 2003
  • In: Physica B. ; 326:1-4, s. 406-409
  • Journal article (peer-reviewed)
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  • G.M.Kalvius, F.E.Wagner, D.R.Noakes, E.Schreier, R.Wäppling, U.Zimmermann, W.Schafer, W.Kockelmann, I.Halevy, J.Gal (author)
  • Magnetic behavior of YFe/sub x/Al/sub 12-x
  • 2003
  • In: Physica B. ; 326:1-4, s. 460-464
  • Journal article (peer-reviewed)
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  • Hartmann, Ola, et al. (author)
  • Muon spin precession in ferromagnetic DyAl2
  • 2014
  • In: 13TH INTERNATIONAL CONFERENCE ON MUON SPIN ROTATION, RELAXATION AND RESONANCE. - : IOP Publishing.
  • Conference paper (peer-reviewed)abstract
    • The Laves phase intermetallics REAl2 were studied by mu,SR over several decades. Results had mainly been obtained for the temperature and field dependencies of relaxation rates in the paramagnetic state. However, it turned out that spontaneous precession signals in the ordered magnetic state were very difficult to observe. We report here the observation a weak precession signal in a single crystalline sample of DyAl2. The precession signal seen has low asymmetry and is heavily damped. This is understood with the notion that the magnetic structure of DyAl2 splits the internal field at the interstitial muon stopping site into several components, and that of those only one of the field components leads to the visible precession signal. The observed temperature dependence of the precession frequency is compatible with the change of easy axis of magnetization at T = 40K.
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  • Kalvius, G. M., et al. (author)
  • A mu SR study of the magnetic properties of Tb2CuIn3
  • 2013
  • In: Physica Scripta. - : IOP Publishing. - 0031-8949 .- 1402-4896. ; 87:5, s. 055702-
  • Journal article (peer-reviewed)abstract
    • Tb2CuIn3 shows exceptional magnetic behavior within the series of R2CuIn3 intermetallics (R denoting one of the rare earth elements), where long-range magnetic order is absent in favor of spin liquid magnetic ground states as a consequence of frustration by competing exchange. In contrast, neutron studies suggested for the magnetic ground state of Tb2CuIn3 the coexistence of long-range antiferromagnetic and short-range order. The present mu SR (muon spin rotation/relaxation) data show that at similar to 45K all Tb magnetic moments freeze into a spin-glass state. At T-N = 33K partial long-range order sets in, its volume fraction being similar to 30%. On cooling to 10 K, the antiferromagnetic fraction reaches the saturation value of 70% and hence remains coexistent with the spin-glass state for T -> 0. The antiferromagnetic state is characterized by considerable short-range spin disorder. At low temperatures the Tb moments in the two coexisting states approach the static limit. This absence of persistent moment fluctuations together with partial formation of long-range order indicates considerably lower frustration in Tb2CuIn3 compared to the rest of the R2CuIn3 compounds.
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