This title appears in the Scientific Report :
2001
Please use the identifier:
http://hdl.handle.net/2128/1077 in citations.
Please use the identifier: http://dx.doi.org/10.1103/PhysRevB.64.024203 in citations.
Mn magnetism in icosahedral quasicrystalline Al72.4Pd20.5Mn7.1
Mn magnetism in icosahedral quasicrystalline Al72.4Pd20.5Mn7.1
The unusual magnetism of manganese atoms in an icosahedral Al72.4Pd20.5Mn7.1 single-grain quasicrystal was studied by Al-27 nuclear magnetic resonance (NMR), magnetic susceptibility, and electrical resistivity measurements. Between room temperature and 50 K both the Al-27 NMR linewidth and the frequ...
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Personal Name(s): | Dolinsek, J. |
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Klanjsek, M. / Apih, T. / Gavilano, J. L. / Gianno, K. / Ott, H. R. / Dubois, J. M. / Urban, K. | |
Contributing Institute: |
Mikrostrukturforschung; IFF-IMF |
Published in: | Physical Review B Physical review / B, 64 64 (2001 2001) 2 2, S. 024203 024203 |
Imprint: |
College Park, Md.
APS
2001
|
Physical Description: |
024203-1 - 024203-7 |
DOI: |
10.1103/PhysRevB.64.024203 |
Document Type: |
Journal Article |
Research Program: |
Festkörperforschung für die Informationstechnik |
Series Title: |
Physical Review B
64 |
Subject (ZB): | |
Link: |
OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1103/PhysRevB.64.024203 in citations.
The unusual magnetism of manganese atoms in an icosahedral Al72.4Pd20.5Mn7.1 single-grain quasicrystal was studied by Al-27 nuclear magnetic resonance (NMR), magnetic susceptibility, and electrical resistivity measurements. Between room temperature and 50 K both the Al-27 NMR linewidth and the frequency shift exhibit a Curie-Weiss-type, 1/(T-theta) temperature dependence. At lower temperatures a significant narrowing of the linewidth, concomitant with a reduction of the frequency shift is observed. These features can be explained by a gradual reduction of the local exchange magnetic field at the position of the Al-27 nuclei that is transferred from the manganese d moments via the conduction electrons. Two possible origins of this phenomenon are discussed: (i) the Kondo-like screening of manganese moments by the conduction electrons and (ii) the ''resistivity'' -damping of the RKKY interaction due to increasing electron localization at low temperatures. |