Single crystal growth and low temperature magnetic properties of the Ce-Cu-Al ternary system

High pressure electrical resistivity of CeCuAl3

“…In our previous study, we succeeded to grow single crystal of CeCuAl 3 by Al self-flux method [10]. We tried to grow single crystal with several condition and always same composition was made, i.e.…”

Syntheses, Structure, Physical Properties, and Electronic Structures of DyCuxAl12–x (4.0 ≤ x ≤ 6.0)

“…[5] The Cu-Al bond of 2.659(2) Å is shorter than the sum of the radii of Cu and Al atoms (2.709 Å), [18] and comparable to those in CeCu 4 Al 8 (2.570-2.755 Å) [19] and DyCu 6 Al 6 (2.651 Å). [5] The Al-Al bond length of 2.663(5) Å is shorter than that of 2.864 Å in fcc aluminum, [17] but similar to 2.6748-2.6936 Å in BaAl 4 . [20] The Al-M bond lengths range from 2.771(3) to 2.784(3) Å and the Cu-M distance is 2.535(2) Å.…”

“…Magnetic susceptibility measurements for DyCu 5.51(4) -Al 6.49 (4) were measured at an applied field of 5000 Oe in the temperature range 2-300 K. As shown in Figure 4, the magnetic susceptibility (χ) vs. temperature (T) shows an antiferromagnetic transition below T N = 6.5 K, above which the inverse susceptibility (Figure 4, inset) increases linearly with the temperature obeying the Curie-Weiss law, χ M = C/(T -θ), where χ M is the magnetic susceptibility, C is the Curie constant, and θ is the Weiss constant. According to the equation μ eff = (7.997 χ M T) 1/2 μ B , [22] the calculated effective magnetic moment, μ eff (calcd) , is 10.46 μ B and θ is -12.68 K. The measured μ eff agrees with the calculated…”

“…[6] Since Cu in DyCu x Al 12-x (4.0 Յ x Յ 6.0) is nonmagnetic, the slight composition change should not affect the magnetic behavior of these compounds. (4) in a magnetic field of 5000 Oe. Inset is shown the inverse magnetic susceptibility χ -1 (T).…”

“…[1][2][3][4][5][6] Previous studies based on powder XRD data have indicated that DyCu 4 Al 8 adopts a ThMn 12 -type structure (space group I4/mmm, Pearson symbol tI26), in which the Dy and Cu atoms occupy the 2a and 8f positions and Al the 8i and 8j positions. [7] Another powder XRD study has concluded the same distribution of Dy, Cu, and Al on the 2a, 8f, and 8i sites, respectively, with disorder over the 8j sites with occupancies of 50 % Cu and 50 % Al, which generates a composition of DyCu 6 Al 6 .…”