CERN Accelerating science

CERN Document Server 34 ჩანაწერია ნაპოვნი  1 - 10შემდეგიდასასრული  ჩანაწერთან გადასვლა: ძიებას დასჭირდა 0.62 წამი. 
1.
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
2.
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.
Full text
3.
EXA 2011 : Proceedings of the International Conference on Exotic Atoms and Related Topics - EXA 2011   5 - 9 Sep 2011  - Vienna, Austria  / Bühler, Paul (ed.); Hartmann, Olaf (ed.); Marton, Johann (ed.); Suzuki, Ken (ed.); Widmann, Eberhard (ed.); Zmeskal, Johann (ed.)
Proceedings of the International Conference on Exotic Atoms and Related Topics (EXA 2011) held in Vienna, Austria, September 5-9, 2011 P. Bühler, O [...]
Dordrecht : Springer, 2012
e-proceedings
4.
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;
5.
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;
6.
Quadrupole influence on the dipolar-field width for a single interstitial in a metal crystal / Hartmann, O (Uppsala U. ; CERN)
Geneva : CERN, 1977 - Published in : Phys. Rev. Lett. 39 (1977) 832-835 Fulltext: PDF;
7.
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;
8.
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
9.
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;
10.
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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16 Hartmann, O N
4 Hartmann, Ola
2 Hartmann, Olaf
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