NMR study on Al75-xPd15Mn10+x quasicrystalline alloys

T. Shinohara, A. P. Tsai, T. Masumoto, T. Sato

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

27Al- and 55Mn nuclear magnetic resonance shift and 27Al spin lattice relaxation time have been measured for six-dimensional face-centered icosahedral quasicrystals, Al75-xPd15Mn10+x with x=0, 2 and 7. The Al75Pd15Mn10 quasicrystal exhibits temperature independent Knight shift and (T1T)-1=0.022±0.002 (sec K)-1 from room temperature to 5 K because there exist no Mn atoms with localized magnetic moment. The replacement of Al with Mn atoms decreases the Al-Knight shift, the Mn-Knight shift and spin lattice relaxation time. The Al-Knight shift becomes more negative due to the presence of Mn atoms with localized magnetic moment. There is an additional contribution to the spin lattice relaxation time which is independent of temperature. The Korringa term, (T1T)-1, increases with Mn content.

Original languageEnglish
Pages (from-to)146-150
Number of pages5
JournalMaterials Transactions
Volume34
Issue number2
Publication statusPublished - 1993 Jan 1

Keywords

  • Aluminum-palladium-manganese system
  • Knight shift
  • Nuclear magnetic resonance
  • Quasicrystal
  • Spin lattice relaxation time

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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