Magnetic properties of the 1/1 approximant Ag42In42Gd16 to the icosahedral quasicrystal Ag–In–Gd

A family of binary magnetic icosahedral quasicrystals based on rare earths and cadmium

“…2. From these data, the Weiss temperature, Θ, is shown together with values previously measured for other ternary rareearth containing quasicrystalline compounds including i-R 9 Mg 34 Zn 57 [10], i-R 10 Mg 40 Cd 50 [11] and i-Gd 14 Ag 50 In 36 [14]. For all of these compounds, Θ is negative, denoting predominantly AFM exchange interactions, and roughly scales with the de Gennes factor, as expected.…”

“…In the ternary R-Mg-Zn icosahedral quasicrystal, for example, dc-and ac-susceptibility measurements demonstrate spin-glass behavior [10], and neutron diffraction measurements on both R-Mg-Zn and R-Mg-Cd clearly show the presence of only short-range magnetic correlations at low temperature [11,12]. Interestingly, the absence of long-range magnetic order also extended to the known crystalline approximant phases as well [13][14][15]. Crystalline approximants are periodic crystals with compositions and unit cell atomic decorations (e.g.…”

“…The pentagonal dodecahedral morphology of the icosahedral phase is shown in the upper-left inset with a millimeter scale; grains as large as ~ 1.0 mm have been grown. [10], R 10 Mg 40 Cd 50 [11] and Gd 14 Ag 50 In 36 [14]. High-energy x-ray diffraction patterns from a single grain of i-Gd-Cd were taken with the beam parallel to (a) the five-fold and (b) two-fold axes.…”

Growth of large-grain Ag–In–Yb icosahedral quasicrystals and approximant crystals

“…They exhibit many novel physical and surface properties, such as unusual electrical conductivities, low thermal conductivities, low coefficients of friction, and high corrosive resistance [2][3][4]. Many attempts have been made to understand how the quasi-periodic atomic arrangement influences the intrinsic properties of QCs.…”

Study of rare earth local moment magnetism and strongly correlated phenomena in various crystal structures

“…As a support argument that they belong to the same structural family, we can compare the measured values for a 6D to the lattice constant, a, expected for the RCd 6 approximant phase through the well-established relation [125]: This is confirmed recently by a full 6D structural refinement of the i-R-Cd quasicrystal as was done for i-Yb-Cd 5.7 [80; 139]. In the case of i-R-Cd, both the rhombic triacontahedral clusters and the Tsai-type atomic cluster were found to show certain degree of Cd/R partial occupancy [139].…”