Systematic study of magnetic properties in Zn-based Tsai-type icosahedral quasicrystals and their approximant

• Published in: Philosophical magazine (2003. Print) Vol. 86; no. 6-8; pp. 725 - 732
• Main Authors: Kashimoto, S., Motomura, S., Francoual, S., Matsuo, S., Ishimasa, T.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Abingdon Taylor & Francis Group 21.02.2006; Taylor and Francis
• Subjects: Amorphous and quasicrystalline magnetic materials; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Exact sciences and technology; Magnetic properties and materials; Physics; Studies of specific magnetic materials; Zinc alloys; Local magnetic moment; Magnetization; Approximant; Temperature effects; Curie-Weiss law; Paramagnetism; Quasicrystals; Icosahedral phase; Magnetic properties; Magnetic susceptibility
• ISSN: 1478-6435; 1478-6443
• DOI: 10.1080/14786430500263967

We have investigated the magnetic properties of Zn-based Tsai-type icosahedral quasicrystals (i-QCs) and their approximants by measuring the field-and temperature-dependence of magnetization. The quasicrystals are formed by an addition of the third element M (M = Mg, Mn, Fe, Co, Ni, Cu, Pd, Ag, Pt or Au) to a Zn 17 Sc 3 1/1 cubic approximant crystal. The remarkable feature of the Zn-M-Sc series is a variety of the additional M elements ranging from light metal Mg and 3d transition metals to noble metals. The experimental results obviously show that the i-QCs containing 3d transition metals (M = Mn, Fe, Co or Ni) have the local magnetic moment formation. We also confirmed appearance of Curie-Weiss paramagnetism for a Zn 82 Fe 3 Sc 15 1/1 cubic approximant crystal. The present results indicate that the divalent Zn of major component in the present i-QCs and approximants may be favourable for the moment formation of iron group elements in contrast with the case of the trivalent Al-based i-QCs such as Al-Cu-Fe.