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Mössbauer and μSR studies of the rare earth magnetic ordering in high $T_c$ superconductors / de Reotier, P Dalmas (Grenoble, INP) ; Vulliet, P (Grenoble, INP ; Joseph Fourier U.) ; Yaouanc, A (Grenoble, INP) ; Hartmann, O (Uppsala U.) ; Karlsson, E (Uppsala U.) ; Wappling, R (Uppsala U.) ; Chaudouet, P ; Garçon, S (Joseph Fourier U., ENSEIG/INPG) ; Senateur, J P (Grenoble, ENSPG) ; Weiss, F (Grenoble, ENSPG) et al.
We have studied the magnetism of the Gd sub-lattice by μSR and $^{155}$Gd Mössbauer spectroscopy from 65 mK to 3 K. The normalized local magnetic field at the two nuclear probes has the same temperature dependence which strongly deviates from a Curie-Weiss mean field behavior. [...]
1988 - 2 p. - Published in : Physica C 153-155 (1988) 1541-1542
In : International Conference on High-temperature Superconductors and Materials and Mechanisms of Superconductivity, Interlaken, Switzerland, 29 Feb - 4 Mar 1988, pp.1541-1542

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$\mu$SR program around 1980 (requested in connection with memorandum SCC-78-11) / Karlsson, E (CERN)
CERN-SCC-78-19. - 1978. - 3 p.
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Letter of intention : A low-momentum muon beam for $\mu$SR studies / Bucci, L (U. Parma) ; Guidi, G (U. Parma) ; Hartmann, O (Uppsala U.) ; Karlsson, E (Uppsala U.) ; De'Munari, G M (U. Parma) ; Niinikoski, T O (CERN) ; Norlin, L O (Uppsala U.) ; Podini, P (U. Parma) ; Tedeschi, R (U. Parma)
CERN-SCC-77-27. - 1977. - 6 p.
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Diffusion of positive muons in some cubic metals / Hartmann, O (Swedish Inst. Phys., Uppsala) ; Karlsson, E (Swedish Inst. Phys., Uppsala) ; Pernestål, K (Swedish Inst. Phys., Uppsala) ; Borghini, M (CERN) ; Niinikoski, T O (CERN) ; Norlin, L O (CERN)
Geneva : CERN, 1977 - 8 p. - Published in : Phys. Lett. A 61 (1977) 141-142 Fulltext: PDF;

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Coherent propagation and strain-induced localization of muons in Al / Hartmann, O (Univ. of Uppsala, Sweden) ; Karlsson, E (Univ. of Uppsala, Sweden) ; Norlin, A O (Univ. of Uppsala, Sweden) ; Richter, D (Institut für Festkörperforschung der Kernforschungsanlage Jülich, Federal Republic of Germany) ; Niinikoski, T O (CERN)
Geneva : CERN, 1978 - Published in : Phys. Rev. Lett. 41 (1978) 1055-1058 APS Published version, local copy: PDF;

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Diffusion and trapping of muons in aluminum: New experiments and comparison with Kondo theory / Hartmann, O (Univ. of Uppsala) ; Karlsson, E (Univ. of Uppsala) ; Wäckelgard, E (Univ. of Uppsala) ; Wäppling, R (Univ. of Uppsala) ; Richter, D (Institut-Laue-Langevin) ; Hempelmann, R (Institut für Festkörperforschung) ; Niinikoski, T O (CERN)
1988 - Published in : Phys. Rev. B 37 (1988) 4425-4440 APS Published version, local copy: PDF;

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Positive muon diffusion in iron and nickel : pressure dependence / Butz, T ; Chappert, J ; Dufresne, J F ; Hartmann, O ; Karlsson, E ; Lindgren, B ; Longobardi, R ; Norlin, L O ; Pezzetti, J P ; Yaouanc, A
The hyperfine field B/sub hf/ at positive muon ( mu /sup +/) in iron and nickel was previously found. Exhibits marked deviations from the bulk magnetization as a function of temperature. [...]
1980 - Published in : J. Magn. Magn. Mater. 15-18 (1980) 671-2
In : International Conference on Magnetism, Munich, Germany, 3 - 7 Sep 1979, pp.671-2

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Muon diffusion in niobium in the presence of traps / Borghini, M ; Hartmann, O ; Karlsson, E ; Kehr, K W ; Niinikoski, T O ; Norlin, L O ; Pernestal, K ; Richter, D ; Soulié, J C ; Walker, E
Investigates muon diffusion in niobium with controlled amounts of interstitial impurities. The polarization decay was interpreted in terms of a two-state model where the muon is alternatively in a state of free diffusion or in traps. [...]
1978 - Published in : Phys. Rev. Lett. 40 (1978) 1723-6 APS Published version, local copy: PDF;

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Some aspects of impurity trapping of muons / Karlsson, E
Several aspects of muon trapping in metals have been studied during the last two years, but the situation is still far from clear. The precise nature of the traps as well as the mechanisms leading to trapping seem to require more detailed investigations than those carried out so far. [...]
1981 - Published in : Hyperfine Interact. 8 (1981) 647-54
In : TRIUMF Muon Physics/Facility Workshop, Vancouver, Canada, 8 - 9 Aug 1980, pp.947-54

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Muon motion in pure and weakly doped aluminium / Niinikoski, T O ; Hartmann, O ; Karlsson, E ; Kehr, K W ; Norlin, L O ; Richter, D ; Welter, J M
The authors have studied the diffusion and localization of positive muons in pure and weakly doped aluminium, in the temperature range 30 mK-100K, by measuring the damping parameter of the muon spin rotation ( mu SR) signal. In this paper they discuss some of their recent results and draw the following conclusions: i) in pure Al, positive muons are delocalized in band states (coherent motion); ii) in Al doped with 5-70 ppm Mn, the temperature, concentration and field dependences of the damping parameter suggest diffusion or capture limited trapping to octahedral interstitial sites in the aluminium lattice below 1K; iii) above 2K a two-state diffusion-trapping model explains well the peak in the damping parameter, which appears at 15-50K for the dopants Mn, Mg, Li and Ag so far studied. [...]
1981 - Published in : Physica B 108+ (1981) 879-82
In : 16th International Conference on Low-temperature Physics pts.1-3, Los Angeles, CA, USA, 19 - 25 Aug 1981, pp.879-82

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