TY - JOUR
T1 - Crystal growth, structure, and physical properties of Ln(Cu,Ga) 3-x(Ln=La-Nd, Eu; x≈0.2)
AU - Cho, Jung Young
AU - Thomas, Evan L.
AU - Nambu, Yusuke
AU - Capan, Cigdem
AU - Karki, Amar B.
AU - Young, David P.
AU - Kuga, Kentarou
AU - Nakatsuji, Satoru
AU - Chan, Julia Y.
PY - 2009/7/28
Y1 - 2009/7/28
N2 - Single crystals of Ln(Cu,Ga) 13-x(Ln=La-Nd, Eu; x≈0.2) were grown using Ga flux and their structures determined by single-crystal X-ray diffraction. The Ln(Cu,Ga) 13-x (Ln=La-Nd, Eu; x≈0.2), adopting NaZn 13 structure type, crystallizes in the cubic Fm3̄c (No. 226) space group, with Z=8 and lattice parameters a≈11.8A° .Magnetic susceptibility and heat capacity measurements do not show any indication of long-range magnetic ordering down to 2 K for magnetic analogues. Metallic behavior is observed in the range of 2-300 K for each compound. A large positive magnetoresistance up to 154% at a field (μ )OH) of 9 T is also observed for Pr(Cu,Ga) 12.85(1). Most interestingly, the Pr analogue shows T 2 temperature-dependent resistivity and satisfies Kadowaki- Woods relation, which is indicative of heavy-fermion behavior. Here, we present the crystal structures and physical properties of Ln(Cu,Ga) 13-x (Ln=La-Nd, Eu; x≈0.2).
AB - Single crystals of Ln(Cu,Ga) 13-x(Ln=La-Nd, Eu; x≈0.2) were grown using Ga flux and their structures determined by single-crystal X-ray diffraction. The Ln(Cu,Ga) 13-x (Ln=La-Nd, Eu; x≈0.2), adopting NaZn 13 structure type, crystallizes in the cubic Fm3̄c (No. 226) space group, with Z=8 and lattice parameters a≈11.8A° .Magnetic susceptibility and heat capacity measurements do not show any indication of long-range magnetic ordering down to 2 K for magnetic analogues. Metallic behavior is observed in the range of 2-300 K for each compound. A large positive magnetoresistance up to 154% at a field (μ )OH) of 9 T is also observed for Pr(Cu,Ga) 12.85(1). Most interestingly, the Pr analogue shows T 2 temperature-dependent resistivity and satisfies Kadowaki- Woods relation, which is indicative of heavy-fermion behavior. Here, we present the crystal structures and physical properties of Ln(Cu,Ga) 13-x (Ln=La-Nd, Eu; x≈0.2).
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U2 - 10.1021/cm803297q
DO - 10.1021/cm803297q
M3 - Article
AN - SCOPUS:67651085258
SN - 0897-4756
VL - 21
SP - 3072
EP - 3078
JO - Chemistry of Materials
JF - Chemistry of Materials
IS - 14
ER -