Nuclear magnetic resonance study of new strong magnetism in quasicrystalline AlPdMnB alloys

✍ Scribed by Takeshi Shinohara; Yoshihiko Yokoyama; Masaki Sato; Akihisa Inoue; Tsuyoshi Masumoto

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 270 KB
• Volume: 181-182
• Category: Article
• ISSN: 0921-5093
• DOI: 10.1016/0921-5093(94)90742-0

✦ Synopsis

We measured 27A1, 55Mn, and liB nuclear magnetic resonance (NMR) spectra and the spin-spin relaxation time T 2 of quasicrystalline A1-Pd-Mn-B alloys with a new strong magnetism. The zero field spectra observed around 35 MHz and 220 MHz at 4.2 K indicate that there exist Mn and B atoms with an internal magnetic field. Further, Al, Mn and B atoms with no internal magnetic field coexist in these quasicrystals. NMR spectra and the spin-spin relaxation time T 2 of crystalline MnB were also measured for comparison. It is concluded that the icosahedral phase of this alloy system consists of a heterogeneous distribution of coexisting ferromagnetic and paramagnetic Mn atoms.